<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:4ed6c7d9-548a-4e56-a9a8-176278abc743,g:f7bffe32-18f1-44a3-9534-4cf5ca313fcd-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.asburyauto.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFINCOME" xlink:type="simple" xlink:href="abg-20250630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFINCOME"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFINCOME" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_8fe0c229-0286-45d8-bf79-7a48f60abd98" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_StatementTable_8fe0c229-0286-45d8-bf79-7a48f60abd98" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_e8137446-db8e-4ed7-be22-c6982f7d293c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8fe0c229-0286-45d8-bf79-7a48f60abd98" xlink:to="loc_us-gaap_AwardTypeAxis_e8137446-db8e-4ed7-be22-c6982f7d293c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e8137446-db8e-4ed7-be22-c6982f7d293c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_e8137446-db8e-4ed7-be22-c6982f7d293c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e8137446-db8e-4ed7-be22-c6982f7d293c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5e717aba-a5ca-404c-8b18-aeffa2a92ebc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_e8137446-db8e-4ed7-be22-c6982f7d293c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5e717aba-a5ca-404c-8b18-aeffa2a92ebc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_50031a3d-6c66-4baa-aa75-488be0a078a5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5e717aba-a5ca-404c-8b18-aeffa2a92ebc" xlink:to="loc_us-gaap_PerformanceSharesMember_50031a3d-6c66-4baa-aa75-488be0a078a5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockMember_2908d758-fde2-4829-b730-800358bc48fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5e717aba-a5ca-404c-8b18-aeffa2a92ebc" xlink:to="loc_us-gaap_RestrictedStockMember_2908d758-fde2-4829-b730-800358bc48fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_1a10b018-74df-4e72-963d-2ac127ec7d75" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8fe0c229-0286-45d8-bf79-7a48f60abd98" xlink:to="loc_srt_ProductOrServiceAxis_1a10b018-74df-4e72-963d-2ac127ec7d75" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_1a10b018-74df-4e72-963d-2ac127ec7d75_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_1a10b018-74df-4e72-963d-2ac127ec7d75" xlink:to="loc_srt_ProductsAndServicesDomain_1a10b018-74df-4e72-963d-2ac127ec7d75_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_2558fd8a-5d03-4b73-905e-d452eacde729" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_1a10b018-74df-4e72-963d-2ac127ec7d75" xlink:to="loc_srt_ProductsAndServicesDomain_2558fd8a-5d03-4b73-905e-d452eacde729" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NewVehicleMember_ba41c190-5865-4aed-adf6-0a6efddb90d6" xlink:href="abg-20250630.xsd#abg_NewVehicleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_2558fd8a-5d03-4b73-905e-d452eacde729" xlink:to="loc_abg_NewVehicleMember_ba41c190-5865-4aed-adf6-0a6efddb90d6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_UsedVehicleMember_90daa5d4-9b6c-416b-aafa-910ae35d2f1f" xlink:href="abg-20250630.xsd#abg_UsedVehicleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_2558fd8a-5d03-4b73-905e-d452eacde729" xlink:to="loc_abg_UsedVehicleMember_90daa5d4-9b6c-416b-aafa-910ae35d2f1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_PartsAndServiceMember_373f8af8-4f56-402d-ba9c-7c291fda794e" xlink:href="abg-20250630.xsd#abg_PartsAndServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_2558fd8a-5d03-4b73-905e-d452eacde729" xlink:to="loc_abg_PartsAndServiceMember_373f8af8-4f56-402d-ba9c-7c291fda794e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FinanceAndInsuranceNetMember_cf5f8412-3c05-463b-a4f0-0ecba10578d8" xlink:href="abg-20250630.xsd#abg_FinanceAndInsuranceNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_2558fd8a-5d03-4b73-905e-d452eacde729" xlink:to="loc_abg_FinanceAndInsuranceNetMember_cf5f8412-3c05-463b-a4f0-0ecba10578d8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_6e37b49b-ef55-4ba5-af0f-8fe8516d9bcb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_RevenuesAbstract_6e37b49b-ef55-4ba5-af0f-8fe8516d9bcb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_8dca343b-7b85-4663-a6c4-cd5833b4728e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_6e37b49b-ef55-4ba5-af0f-8fe8516d9bcb" xlink:to="loc_us-gaap_Revenues_8dca343b-7b85-4663-a6c4-cd5833b4728e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenueAbstract_d1a9fb6c-a801-4d88-b171-4abaee4e3bc0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfRevenueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_CostOfRevenueAbstract_d1a9fb6c-a801-4d88-b171-4abaee4e3bc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_f591374e-10cd-47ef-bfee-3f64f279cc19" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_d1a9fb6c-a801-4d88-b171-4abaee4e3bc0" xlink:to="loc_us-gaap_CostOfRevenue_f591374e-10cd-47ef-bfee-3f64f279cc19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_42f765b3-03f1-434d-bbd7-017074dc8f62" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GrossProfit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_GrossProfit_42f765b3-03f1-434d-bbd7-017074dc8f62" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_ecaecf7b-00e2-4797-90b2-6fbf82958254" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_OperatingExpensesAbstract_ecaecf7b-00e2-4797-90b2-6fbf82958254" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_3eb6ec97-2b71-41fa-a199-422c186cc3de" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_ecaecf7b-00e2-4797-90b2-6fbf82958254" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_3eb6ec97-2b71-41fa-a199-422c186cc3de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_85c161df-e16c-470d-8d96-4936d32cc0ad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_ecaecf7b-00e2-4797-90b2-6fbf82958254" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_85c161df-e16c-470d-8d96-4936d32cc0ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_504b68d4-e2bf-4997-b0b1-34cd7c30dd5a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_ecaecf7b-00e2-4797-90b2-6fbf82958254" xlink:to="loc_us-gaap_AssetImpairmentCharges_504b68d4-e2bf-4997-b0b1-34cd7c30dd5a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_c6fbb9da-ac4a-459b-b7c2-f93b1f59533b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_OperatingIncomeLoss_c6fbb9da-ac4a-459b-b7c2-f93b1f59533b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncomeAndExpensesAbstract_245949f6-5e1c-4207-9d93-e05494873163" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherIncomeAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_OtherIncomeAndExpensesAbstract_245949f6-5e1c-4207-9d93-e05494873163" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FloorPlanInterestExpense_2597998c-a097-4a88-be6b-822e087c4e82" xlink:href="abg-20250630.xsd#abg_FloorPlanInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_245949f6-5e1c-4207-9d93-e05494873163" xlink:to="loc_abg_FloorPlanInterestExpense_2597998c-a097-4a88-be6b-822e087c4e82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOther_55558766-18f0-4bcd-85d2-868b9b46ba93" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_245949f6-5e1c-4207-9d93-e05494873163" xlink:to="loc_us-gaap_InterestExpenseOther_55558766-18f0-4bcd-85d2-868b9b46ba93" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_e3a58463-5a36-485f-ae57-246a992c1b0c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_245949f6-5e1c-4207-9d93-e05494873163" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_e3a58463-5a36-485f-ae57-246a992c1b0c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_eb719f46-4010-422b-9aa3-b7d631112f1d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_245949f6-5e1c-4207-9d93-e05494873163" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_eb719f46-4010-422b-9aa3-b7d631112f1d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1c9c33d3-7232-4ff9-a6e7-c2b001fe98c0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1c9c33d3-7232-4ff9-a6e7-c2b001fe98c0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_8400e902-d968-4db0-a847-66d9c9dbc109" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_8400e902-d968-4db0-a847-66d9c9dbc109" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_1312a4ee-d039-4a33-9a10-cd6519868dd6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_NetIncomeLoss_1312a4ee-d039-4a33-9a10-cd6519868dd6" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_21051ff9-1e12-4d30-81c5-1acfd98b8366" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_EarningsPerShareAbstract_21051ff9-1e12-4d30-81c5-1acfd98b8366" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_1018c007-0f66-4d23-8810-fce83f4c8a54" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_21051ff9-1e12-4d30-81c5-1acfd98b8366" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract_1018c007-0f66-4d23-8810-fce83f4c8a54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_80ccb88e-534e-43fe-a96d-d0c976275148" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_1018c007-0f66-4d23-8810-fce83f4c8a54" xlink:to="loc_us-gaap_EarningsPerShareBasic_80ccb88e-534e-43fe-a96d-d0c976275148" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_8b3d0e0c-1e59-4ee5-9dfe-eb32484d31be" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_21051ff9-1e12-4d30-81c5-1acfd98b8366" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_8b3d0e0c-1e59-4ee5-9dfe-eb32484d31be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_b601b4a0-c3a1-40a7-863c-1124f2356c83" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_8b3d0e0c-1e59-4ee5-9dfe-eb32484d31be" xlink:to="loc_us-gaap_EarningsPerShareDiluted_b601b4a0-c3a1-40a7-863c-1124f2356c83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_4606774d-213a-478e-b2ba-68bb61729ee9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_da79cb0e-0cb0-4a91-997b-c720c58181b5" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_4606774d-213a-478e-b2ba-68bb61729ee9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_d58c4ac0-cea6-422d-8564-67c561b7ed57" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_4606774d-213a-478e-b2ba-68bb61729ee9" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_d58c4ac0-cea6-422d-8564-67c561b7ed57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_2279c461-c05d-4d9c-93d0-278ca295e153" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_d58c4ac0-cea6-422d-8564-67c561b7ed57" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_2279c461-c05d-4d9c-93d0-278ca295e153" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_1f5ee1d5-a7e1-40ea-9781-b11755fcb949" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_4606774d-213a-478e-b2ba-68bb61729ee9" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_1f5ee1d5-a7e1-40ea-9781-b11755fcb949" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITY" xlink:type="simple" xlink:href="abg-20250630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITY"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_438229ca-53b3-47dd-90d9-6afc66a241ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_263266c7-1646-426b-a679-e8988e5c2de3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_438229ca-53b3-47dd-90d9-6afc66a241ca" xlink:to="loc_us-gaap_StatementTable_263266c7-1646-426b-a679-e8988e5c2de3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_1e894376-a748-477b-b4e4-f0d7a3a11c13" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_263266c7-1646-426b-a679-e8988e5c2de3" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_1e894376-a748-477b-b4e4-f0d7a3a11c13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_1e894376-a748-477b-b4e4-f0d7a3a11c13_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_1e894376-a748-477b-b4e4-f0d7a3a11c13" xlink:to="loc_us-gaap_EquityComponentDomain_1e894376-a748-477b-b4e4-f0d7a3a11c13_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_d61edba7-29a0-4b83-a17c-55e055b5b960" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_1e894376-a748-477b-b4e4-f0d7a3a11c13" xlink:to="loc_us-gaap_EquityComponentDomain_d61edba7-29a0-4b83-a17c-55e055b5b960" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_5aff60d2-1733-48ba-b982-b042eeb326b1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d61edba7-29a0-4b83-a17c-55e055b5b960" xlink:to="loc_us-gaap_CommonStockMember_5aff60d2-1733-48ba-b982-b042eeb326b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_bb7b9df8-7e00-42c2-bbe7-08a9606e8009" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d61edba7-29a0-4b83-a17c-55e055b5b960" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_bb7b9df8-7e00-42c2-bbe7-08a9606e8009" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_4050d077-0077-4454-b781-4b32a4fd5111" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d61edba7-29a0-4b83-a17c-55e055b5b960" xlink:to="loc_us-gaap_RetainedEarningsMember_4050d077-0077-4454-b781-4b32a4fd5111" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_5c0a47d5-fcbc-4136-9d2d-d32a6208dd8e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d61edba7-29a0-4b83-a17c-55e055b5b960" xlink:to="loc_us-gaap_TreasuryStockCommonMember_5c0a47d5-fcbc-4136-9d2d-d32a6208dd8e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_a2f71534-d75c-44b3-93fc-1cad52c855ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_d61edba7-29a0-4b83-a17c-55e055b5b960" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_a2f71534-d75c-44b3-93fc-1cad52c855ee" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_438229ca-53b3-47dd-90d9-6afc66a241ca" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_0dc3bf5e-1af4-4730-ae4c-e38c887caf0a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_0dc3bf5e-1af4-4730-ae4c-e38c887caf0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_d0e146f3-3da8-4a8e-b0ff-8c8866c8e6ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_StockholdersEquity_d0e146f3-3da8-4a8e-b0ff-8c8866c8e6ac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_8050c618-b15e-45fa-915f-471532988004" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_TreasuryStockCommonShares_8050c618-b15e-45fa-915f-471532988004" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_e1c55cf8-a9ec-49f8-af47-02ddadb20104" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_NetIncomeLoss_e1c55cf8-a9ec-49f8-af47-02ddadb20104" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_d616f71f-0260-4506-865c-5d74b8d4ba33" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_d616f71f-0260-4506-865c-5d74b8d4ba33" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_b88ca361-795f-4da4-8e54-27902d841978" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_b88ca361-795f-4da4-8e54-27902d841978" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_dc5b4037-1909-4822-8b11-b4798e036448" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_dc5b4037-1909-4822-8b11-b4798e036448" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_7d6372f0-bf77-4654-8d30-2f7f20b8a855" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_7d6372f0-bf77-4654-8d30-2f7f20b8a855" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_06022d72-8380-49dc-856e-341bb5100e8e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_06022d72-8380-49dc-856e-341bb5100e8e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_436b4856-404c-46e9-91c6-595e53f4f5f7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_436b4856-404c-46e9-91c6-595e53f4f5f7" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_1bea7828-00e7-456e-b2ae-d90fdaa8facd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_1bea7828-00e7-456e-b2ae-d90fdaa8facd" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_8ce4047c-a174-4793-b294-93c97e34ae69" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_8ce4047c-a174-4793-b294-93c97e34ae69" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_d23b968f-9c02-47a4-93e4-d0758b185504" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_d23b968f-9c02-47a4-93e4-d0758b185504" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_5b85335d-c3f7-4825-ba79-5e70113736ed" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_5b85335d-c3f7-4825-ba79-5e70113736ed" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_06d7897e-ddfa-410d-98c9-cdfd6d111528" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_f6b19e25-972d-4806-ad5a-55597154593a" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_06d7897e-ddfa-410d-98c9-cdfd6d111528" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_044fc020-c54b-420d-8299-03b5b12cb3d1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_da75fad5-f8be-4f33-8ba3-3cba41794301" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_3cc98322-128c-4453-804e-d6c43989a1cc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TreasuryStockCommonShares"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/DESCRIPTIONOFBUSINESSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#DESCRIPTIONOFBUSINESSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/DESCRIPTIONOFBUSINESSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:href="abg-20250630.xsd#abg_BusinessOrganizationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ScheduleOfBusinessOrganizationTable_fadc60ef-8094-4478-b9e3-dd653d61f5f2" xlink:href="abg-20250630.xsd#abg_ScheduleOfBusinessOrganizationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_abg_ScheduleOfBusinessOrganizationTable_fadc60ef-8094-4478-b9e3-dd653d61f5f2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_TypeOfBrandAxis_b37b7dee-3550-4ce8-92a2-6047da16219b" xlink:href="abg-20250630.xsd#abg_TypeOfBrandAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_abg_ScheduleOfBusinessOrganizationTable_fadc60ef-8094-4478-b9e3-dd653d61f5f2" xlink:to="loc_abg_TypeOfBrandAxis_b37b7dee-3550-4ce8-92a2-6047da16219b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_TypeOfBrandDomain_b37b7dee-3550-4ce8-92a2-6047da16219b_default" xlink:href="abg-20250630.xsd#abg_TypeOfBrandDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_abg_TypeOfBrandAxis_b37b7dee-3550-4ce8-92a2-6047da16219b" xlink:to="loc_abg_TypeOfBrandDomain_b37b7dee-3550-4ce8-92a2-6047da16219b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_TypeOfBrandDomain_6a31acf1-e878-49ad-8ae4-86432477d623" xlink:href="abg-20250630.xsd#abg_TypeOfBrandDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_abg_TypeOfBrandAxis_b37b7dee-3550-4ce8-92a2-6047da16219b" xlink:to="loc_abg_TypeOfBrandDomain_6a31acf1-e878-49ad-8ae4-86432477d623" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_LuxuryBrandsMember_2a3e9565-34a9-4bb3-bf76-241298107e4a" xlink:href="abg-20250630.xsd#abg_LuxuryBrandsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_TypeOfBrandDomain_6a31acf1-e878-49ad-8ae4-86432477d623" xlink:to="loc_abg_LuxuryBrandsMember_2a3e9565-34a9-4bb3-bf76-241298107e4a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_MidlineImportBrandsMember_ca65d910-0960-4124-8720-4d641414f044" xlink:href="abg-20250630.xsd#abg_MidlineImportBrandsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_TypeOfBrandDomain_6a31acf1-e878-49ad-8ae4-86432477d623" xlink:to="loc_abg_MidlineImportBrandsMember_ca65d910-0960-4124-8720-4d641414f044" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DomesticBrandsMember_f8b2f83e-8fa4-40e2-81a7-17030e585a7b" xlink:href="abg-20250630.xsd#abg_DomesticBrandsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_TypeOfBrandDomain_6a31acf1-e878-49ad-8ae4-86432477d623" xlink:to="loc_abg_DomesticBrandsMember_f8b2f83e-8fa4-40e2-81a7-17030e585a7b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_0f430f57-ebd2-47ba-b285-ee99809ecb10" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_abg_ScheduleOfBusinessOrganizationTable_fadc60ef-8094-4478-b9e3-dd653d61f5f2" xlink:to="loc_us-gaap_AwardTypeAxis_0f430f57-ebd2-47ba-b285-ee99809ecb10" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0f430f57-ebd2-47ba-b285-ee99809ecb10_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_0f430f57-ebd2-47ba-b285-ee99809ecb10" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0f430f57-ebd2-47ba-b285-ee99809ecb10_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2744dc06-adf6-444e-ba9d-e0e297d1d4d2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_0f430f57-ebd2-47ba-b285-ee99809ecb10" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2744dc06-adf6-444e-ba9d-e0e297d1d4d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_2b7f6609-f71d-49be-8e82-f6b1813d7095" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2744dc06-adf6-444e-ba9d-e0e297d1d4d2" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_2b7f6609-f71d-49be-8e82-f6b1813d7095" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_37738bf1-a4f5-41ca-80bc-28d498636a34" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2744dc06-adf6-444e-ba9d-e0e297d1d4d2" xlink:to="loc_us-gaap_PerformanceSharesMember_37738bf1-a4f5-41ca-80bc-28d498636a34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NumberOfFranchises_af23c322-16c6-472b-8232-b5b8f8347648" xlink:href="abg-20250630.xsd#abg_NumberOfFranchises"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_abg_NumberOfFranchises_af23c322-16c6-472b-8232-b5b8f8347648" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NumberOfDealershipLocations_efb307ef-38ce-42c4-bf78-3adf810046ff" xlink:href="abg-20250630.xsd#abg_NumberOfDealershipLocations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_abg_NumberOfDealershipLocations_efb307ef-38ce-42c4-bf78-3adf810046ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NumberOfVehicleBrands_0f362e3e-ae77-4734-bb8e-da7f67114d99" xlink:href="abg-20250630.xsd#abg_NumberOfVehicleBrands"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_abg_NumberOfVehicleBrands_0f362e3e-ae77-4734-bb8e-da7f67114d99" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NumberOfCollisionRepairCenters_1647239d-48af-4a0b-a593-f2641c4fb60b" xlink:href="abg-20250630.xsd#abg_NumberOfCollisionRepairCenters"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_abg_NumberOfCollisionRepairCenters_1647239d-48af-4a0b-a593-f2641c4fb60b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfStatesInWhichEntityOperates_36897ea0-950a-422a-b1e8-6f1c8ace29ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NumberOfStatesInWhichEntityOperates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_us-gaap_NumberOfStatesInWhichEntityOperates_36897ea0-950a-422a-b1e8-6f1c8ace29ec" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_BrandMix_65bec719-f9bd-49e6-bcd6-8538854e7c3d" xlink:href="abg-20250630.xsd#abg_BrandMix"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_abg_BrandMix_65bec719-f9bd-49e6-bcd6-8538854e7c3d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_c86b63d6-8449-45a2-8598-5ca03a52994a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_us-gaap_NumberOfReportableSegments_c86b63d6-8449-45a2-8598-5ca03a52994a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_317cfca3-bb91-403c-b7b7-798aafc0c8e7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_317cfca3-bb91-403c-b7b7-798aafc0c8e7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesRetired_f2ce19ae-e66c-4846-9844-9923df455085" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TreasuryStockSharesRetired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_us-gaap_TreasuryStockSharesRetired_f2ce19ae-e66c-4846-9844-9923df455085" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_StockRepurchaseProgramIncreaseDecreaseInAuthorizedAmount_61aa5bfd-75d8-4864-862a-5dd6427d3b78" xlink:href="abg-20250630.xsd#abg_StockRepurchaseProgramIncreaseDecreaseInAuthorizedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_abg_StockRepurchaseProgramIncreaseDecreaseInAuthorizedAmount_61aa5bfd-75d8-4864-862a-5dd6427d3b78" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_98fb35b3-533d-4fac-89d1-c2f674bc834d" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_98fb35b3-533d-4fac-89d1-c2f674bc834d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_00a4028a-072c-4aaa-83ed-8fc68f6ba031" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_00a4028a-072c-4aaa-83ed-8fc68f6ba031" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_1bb1d5d5-5576-4deb-9d69-c2f6883ae20b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_BusinessOrganizationLineItems_f3df844a-caeb-4bb0-b671-1fab7df9a6bb" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_1bb1d5d5-5576-4deb-9d69-c2f6883ae20b" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/REVENUERECOGNITIONDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#REVENUERECOGNITIONDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/REVENUERECOGNITIONDisaggregationofRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_666ec064-c1ba-4109-934e-4388c3af1a08" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_46859a26-d33e-4456-8bae-5d8f65fb48cf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_666ec064-c1ba-4109-934e-4388c3af1a08" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_46859a26-d33e-4456-8bae-5d8f65fb48cf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_0e1d86dc-a1f5-4e71-aa59-d62accb532f8" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_46859a26-d33e-4456-8bae-5d8f65fb48cf" xlink:to="loc_srt_ProductOrServiceAxis_0e1d86dc-a1f5-4e71-aa59-d62accb532f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_0e1d86dc-a1f5-4e71-aa59-d62accb532f8_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_0e1d86dc-a1f5-4e71-aa59-d62accb532f8" xlink:to="loc_srt_ProductsAndServicesDomain_0e1d86dc-a1f5-4e71-aa59-d62accb532f8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_7e99b2ef-ed8e-42ed-8f68-1a8300b06fab" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_0e1d86dc-a1f5-4e71-aa59-d62accb532f8" xlink:to="loc_srt_ProductsAndServicesDomain_7e99b2ef-ed8e-42ed-8f68-1a8300b06fab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NewAndUsedVehicleMember_9df6e4bb-7be8-46b3-8fd9-40e01c5cbb5a" xlink:href="abg-20250630.xsd#abg_NewAndUsedVehicleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_7e99b2ef-ed8e-42ed-8f68-1a8300b06fab" xlink:to="loc_abg_NewAndUsedVehicleMember_9df6e4bb-7be8-46b3-8fd9-40e01c5cbb5a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NewVehicleMember_6e904fc1-f981-4856-b7aa-6c43b0288e0b" xlink:href="abg-20250630.xsd#abg_NewVehicleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_NewAndUsedVehicleMember_9df6e4bb-7be8-46b3-8fd9-40e01c5cbb5a" xlink:to="loc_abg_NewVehicleMember_6e904fc1-f981-4856-b7aa-6c43b0288e0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_UsedvehicleretailMember_0d4d7508-1f28-4678-93ca-6f7c87ca84ec" xlink:href="abg-20250630.xsd#abg_UsedvehicleretailMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_NewAndUsedVehicleMember_9df6e4bb-7be8-46b3-8fd9-40e01c5cbb5a" xlink:to="loc_abg_UsedvehicleretailMember_0d4d7508-1f28-4678-93ca-6f7c87ca84ec" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_UsedvehiclewholesaleMember_f39f48d8-0008-438c-b1d4-cb4808e5ec63" xlink:href="abg-20250630.xsd#abg_UsedvehiclewholesaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_NewAndUsedVehicleMember_9df6e4bb-7be8-46b3-8fd9-40e01c5cbb5a" xlink:to="loc_abg_UsedvehiclewholesaleMember_f39f48d8-0008-438c-b1d4-cb4808e5ec63" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_SaleofvehiclepartsandaccessoriesMember_06933378-9995-488a-91b5-e6b57f0f06eb" xlink:href="abg-20250630.xsd#abg_SaleofvehiclepartsandaccessoriesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_7e99b2ef-ed8e-42ed-8f68-1a8300b06fab" xlink:to="loc_abg_SaleofvehiclepartsandaccessoriesMember_06933378-9995-488a-91b5-e6b57f0f06eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_VehicleRepairAndMaintenanceServicesMember_82705458-c44c-441a-8e5f-ca8b32177e14" xlink:href="abg-20250630.xsd#abg_VehicleRepairAndMaintenanceServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_7e99b2ef-ed8e-42ed-8f68-1a8300b06fab" xlink:to="loc_abg_VehicleRepairAndMaintenanceServicesMember_82705458-c44c-441a-8e5f-ca8b32177e14" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_PartsAndServicesMember_6404081d-4be7-448e-8910-483b4d11f810" xlink:href="abg-20250630.xsd#abg_PartsAndServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_VehicleRepairAndMaintenanceServicesMember_82705458-c44c-441a-8e5f-ca8b32177e14" xlink:to="loc_abg_PartsAndServicesMember_6404081d-4be7-448e-8910-483b4d11f810" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FinanceAndInsuranceNetMember_ce255567-28f1-423c-869b-5795a5848608" xlink:href="abg-20250630.xsd#abg_FinanceAndInsuranceNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_VehicleRepairAndMaintenanceServicesMember_82705458-c44c-441a-8e5f-ca8b32177e14" xlink:to="loc_abg_FinanceAndInsuranceNetMember_ce255567-28f1-423c-869b-5795a5848608" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_881bace9-037d-477d-a716-1bfc5f877a12" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_666ec064-c1ba-4109-934e-4388c3af1a08" xlink:to="loc_us-gaap_Revenues_881bace9-037d-477d-a716-1bfc5f877a12" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/REVENUERECOGNITIONContractAssetsDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#REVENUERECOGNITIONContractAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/REVENUERECOGNITIONContractAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_5f531107-584f-4780-b8ca-0ed14508baf4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_fedd2ef3-c3a6-456a-a397-24c7cd01b1f4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_5f531107-584f-4780-b8ca-0ed14508baf4" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_fedd2ef3-c3a6-456a-a397-24c7cd01b1f4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_b02c2379-7e42-4e84-adec-2e61eb880bad" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_fedd2ef3-c3a6-456a-a397-24c7cd01b1f4" xlink:to="loc_srt_ProductOrServiceAxis_b02c2379-7e42-4e84-adec-2e61eb880bad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_b02c2379-7e42-4e84-adec-2e61eb880bad_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_b02c2379-7e42-4e84-adec-2e61eb880bad" xlink:to="loc_srt_ProductsAndServicesDomain_b02c2379-7e42-4e84-adec-2e61eb880bad_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_ec6cbae4-c36a-42ef-9b86-921dbaa472bd" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_b02c2379-7e42-4e84-adec-2e61eb880bad" xlink:to="loc_srt_ProductsAndServicesDomain_ec6cbae4-c36a-42ef-9b86-921dbaa472bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_VehicleRepairAndMaintenanceServicesMember_6579bf78-4589-4895-ae45-9a841c02f43c" xlink:href="abg-20250630.xsd#abg_VehicleRepairAndMaintenanceServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_ec6cbae4-c36a-42ef-9b86-921dbaa472bd" xlink:to="loc_abg_VehicleRepairAndMaintenanceServicesMember_6579bf78-4589-4895-ae45-9a841c02f43c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FinanceAndInsuranceNetMember_a418b517-df80-4fad-9cd4-81cb80c5de61" xlink:href="abg-20250630.xsd#abg_FinanceAndInsuranceNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_ec6cbae4-c36a-42ef-9b86-921dbaa472bd" xlink:to="loc_abg_FinanceAndInsuranceNetMember_a418b517-df80-4fad-9cd4-81cb80c5de61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DeferredSalesCommissionsMember_12c742f7-27e4-4618-8390-6e725de5f328" xlink:href="abg-20250630.xsd#abg_DeferredSalesCommissionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_ec6cbae4-c36a-42ef-9b86-921dbaa472bd" xlink:to="loc_abg_DeferredSalesCommissionsMember_12c742f7-27e4-4618-8390-6e725de5f328" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ChangeinContractwithCustomerAssetRollForward_d47b8427-7ffb-4108-ba23-fab5e640d6de" xlink:href="abg-20250630.xsd#abg_ChangeinContractwithCustomerAssetRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_5f531107-584f-4780-b8ca-0ed14508baf4" xlink:to="loc_abg_ChangeinContractwithCustomerAssetRollForward_d47b8427-7ffb-4108-ba23-fab5e640d6de" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_3afd6576-82d6-4c01-b98f-9618f60e15da" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ChangeinContractwithCustomerAssetRollForward_d47b8427-7ffb-4108-ba23-fab5e640d6de" xlink:to="loc_us-gaap_ContractWithCustomerAssetNet_3afd6576-82d6-4c01-b98f-9618f60e15da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_1831f0e5-20ed-47e2-a807-bb2ec400b2c3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerAssetReclassifiedToReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ChangeinContractwithCustomerAssetRollForward_d47b8427-7ffb-4108-ba23-fab5e640d6de" xlink:to="loc_us-gaap_ContractWithCustomerAssetReclassifiedToReceivable_1831f0e5-20ed-47e2-a807-bb2ec400b2c3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ContractWithCustomerAssetAmortizationOfCostsToObtainAContractWithACustomer_a4601902-f072-4575-b33b-29ada680c0e5" xlink:href="abg-20250630.xsd#abg_ContractWithCustomerAssetAmortizationOfCostsToObtainAContractWithACustomer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ChangeinContractwithCustomerAssetRollForward_d47b8427-7ffb-4108-ba23-fab5e640d6de" xlink:to="loc_abg_ContractWithCustomerAssetAmortizationOfCostsToObtainAContractWithACustomer_a4601902-f072-4575-b33b-29ada680c0e5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ContractWithCustomerCostsToObtainContract_3122b665-b83f-43d6-b9bc-1648e3a902ae" xlink:href="abg-20250630.xsd#abg_ContractWithCustomerCostsToObtainContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ChangeinContractwithCustomerAssetRollForward_d47b8427-7ffb-4108-ba23-fab5e640d6de" xlink:to="loc_abg_ContractWithCustomerCostsToObtainContract_3122b665-b83f-43d6-b9bc-1648e3a902ae" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress_08a32adb-34ed-41ac-8d9b-a84c4b0c1bbf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ChangeinContractwithCustomerAssetRollForward_d47b8427-7ffb-4108-ba23-fab5e640d6de" xlink:to="loc_us-gaap_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress_08a32adb-34ed-41ac-8d9b-a84c4b0c1bbf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_9a5ce4be-dd50-4f8f-8006-306453f16c7f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_242ad184-055d-49ee-a94d-e5c0a58e2304" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerAssetNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_5f531107-584f-4780-b8ca-0ed14508baf4" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_242ad184-055d-49ee-a94d-e5c0a58e2304" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_179318df-68b0-42ae-a866-328f1f4fb1c2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerAssetNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_5f531107-584f-4780-b8ca-0ed14508baf4" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_179318df-68b0-42ae-a866-328f1f4fb1c2" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/REVENUERECOGNITIONNarrativeDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#REVENUERECOGNITIONNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/REVENUERECOGNITIONNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_bfc045e5-1811-4558-ab75-f6ede25f8afa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_372c25b5-ee65-4439-b421-aef832d50694" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_bfc045e5-1811-4558-ab75-f6ede25f8afa" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_372c25b5-ee65-4439-b421-aef832d50694" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DeferredRevenueLocationAxis_32795939-8092-4cf5-ae8e-d5eae84dc36c" xlink:href="abg-20250630.xsd#abg_DeferredRevenueLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_372c25b5-ee65-4439-b421-aef832d50694" xlink:to="loc_abg_DeferredRevenueLocationAxis_32795939-8092-4cf5-ae8e-d5eae84dc36c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DeferredRevenueLocationDomain_32795939-8092-4cf5-ae8e-d5eae84dc36c_default" xlink:href="abg-20250630.xsd#abg_DeferredRevenueLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_abg_DeferredRevenueLocationAxis_32795939-8092-4cf5-ae8e-d5eae84dc36c" xlink:to="loc_abg_DeferredRevenueLocationDomain_32795939-8092-4cf5-ae8e-d5eae84dc36c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DeferredRevenueLocationDomain_9012aad7-a96e-4cbb-8532-55f310657b24" xlink:href="abg-20250630.xsd#abg_DeferredRevenueLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_abg_DeferredRevenueLocationAxis_32795939-8092-4cf5-ae8e-d5eae84dc36c" xlink:to="loc_abg_DeferredRevenueLocationDomain_9012aad7-a96e-4cbb-8532-55f310657b24" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FinanceAndInsuranceNetMember_362fc70c-3b29-4ed6-b85f-d63dabe37242" xlink:href="abg-20250630.xsd#abg_FinanceAndInsuranceNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_DeferredRevenueLocationDomain_9012aad7-a96e-4cbb-8532-55f310657b24" xlink:to="loc_abg_FinanceAndInsuranceNetMember_362fc70c-3b29-4ed6-b85f-d63dabe37242" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_b0c92804-d230-4bf1-b3b3-137c0b121f4b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_bfc045e5-1811-4558-ab75-f6ede25f8afa" xlink:to="loc_us-gaap_ContractWithCustomerLiability_b0c92804-d230-4bf1-b3b3-137c0b121f4b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/ACQUISITIONSANDDIVESTITURESNarrativeDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#ACQUISITIONSANDDIVESTITURESNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/ACQUISITIONSANDDIVESTITURESNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8937f3b2-36d1-4a2b-b55d-6f5492093260" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8937f3b2-36d1-4a2b-b55d-6f5492093260" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_53db3ee7-fa77-4ef2-8851-b0aa57b2efdf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8937f3b2-36d1-4a2b-b55d-6f5492093260" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_53db3ee7-fa77-4ef2-8851-b0aa57b2efdf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_53db3ee7-fa77-4ef2-8851-b0aa57b2efdf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_53db3ee7-fa77-4ef2-8851-b0aa57b2efdf" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_53db3ee7-fa77-4ef2-8851-b0aa57b2efdf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9aa82df9-7e71-4e98-b85e-e3fdc69c391b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_53db3ee7-fa77-4ef2-8851-b0aa57b2efdf" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9aa82df9-7e71-4e98-b85e-e3fdc69c391b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_HerbChambersDealershipsMember_9aa5ab00-3d0a-4a89-8a6a-0849f3110a57" xlink:href="abg-20250630.xsd#abg_HerbChambersDealershipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9aa82df9-7e71-4e98-b85e-e3fdc69c391b" xlink:to="loc_abg_HerbChambersDealershipsMember_9aa5ab00-3d0a-4a89-8a6a-0849f3110a57" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_5fb68bca-486a-4b6a-a960-05f1dd8537f2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8937f3b2-36d1-4a2b-b55d-6f5492093260" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_5fb68bca-486a-4b6a-a960-05f1dd8537f2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_5fb68bca-486a-4b6a-a960-05f1dd8537f2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_5fb68bca-486a-4b6a-a960-05f1dd8537f2" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_5fb68bca-486a-4b6a-a960-05f1dd8537f2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_c8cd1093-3bf3-4246-b539-d6cd4ac1d58c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_5fb68bca-486a-4b6a-a960-05f1dd8537f2" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_c8cd1093-3bf3-4246-b539-d6cd4ac1d58c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_fbba0051-8436-449c-8c7a-b35c0e097a74" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_c8cd1093-3bf3-4246-b539-d6cd4ac1d58c" xlink:to="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_fbba0051-8436-449c-8c7a-b35c0e097a74" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_2a78c6a5-e6b5-4687-aa4a-04babc1223c0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_c8cd1093-3bf3-4246-b539-d6cd4ac1d58c" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_2a78c6a5-e6b5-4687-aa4a-04babc1223c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_c0bbe599-4cee-452b-99a9-2dffa5497ea8" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8937f3b2-36d1-4a2b-b55d-6f5492093260" xlink:to="loc_srt_StatementGeographicalAxis_c0bbe599-4cee-452b-99a9-2dffa5497ea8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_c0bbe599-4cee-452b-99a9-2dffa5497ea8_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_c0bbe599-4cee-452b-99a9-2dffa5497ea8" xlink:to="loc_srt_SegmentGeographicalDomain_c0bbe599-4cee-452b-99a9-2dffa5497ea8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_ad134688-aecb-4164-90f3-76e9c069e3c0" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_c0bbe599-4cee-452b-99a9-2dffa5497ea8" xlink:to="loc_srt_SegmentGeographicalDomain_ad134688-aecb-4164-90f3-76e9c069e3c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_DE_9865ef4e-06bc-4e9c-9620-2b2b6fded48b" xlink:href="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd#stpr_DE"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ad134688-aecb-4164-90f3-76e9c069e3c0" xlink:to="loc_stpr_DE_9865ef4e-06bc-4e9c-9620-2b2b6fded48b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_CO_75f286d4-c11a-4fb1-8d13-ed3ff344e4d6" xlink:href="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd#stpr_CO"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ad134688-aecb-4164-90f3-76e9c069e3c0" xlink:to="loc_stpr_CO_75f286d4-c11a-4fb1-8d13-ed3ff344e4d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_SC_7f0ab141-25ec-4436-b8b9-739e5bf3a338" xlink:href="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd#stpr_SC"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ad134688-aecb-4164-90f3-76e9c069e3c0" xlink:to="loc_stpr_SC_7f0ab141-25ec-4436-b8b9-739e5bf3a338" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_CA_2397b20d-0949-472d-8a89-367b470f2197" xlink:href="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd#stpr_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ad134688-aecb-4164-90f3-76e9c069e3c0" xlink:to="loc_stpr_CA_2397b20d-0949-472d-8a89-367b470f2197" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_UT_93c0aaa6-68f3-4d87-bda1-5a677c0f31b7" xlink:href="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd#stpr_UT"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ad134688-aecb-4164-90f3-76e9c069e3c0" xlink:to="loc_stpr_UT_93c0aaa6-68f3-4d87-bda1-5a677c0f31b7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_GA_41b85b8e-abad-462b-89aa-3c5e97779da4" xlink:href="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd#stpr_GA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ad134688-aecb-4164-90f3-76e9c069e3c0" xlink:to="loc_stpr_GA_41b85b8e-abad-462b-89aa-3c5e97779da4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_957cf268-3a50-4e55-b32f-0257f473531e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8937f3b2-36d1-4a2b-b55d-6f5492093260" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_957cf268-3a50-4e55-b32f-0257f473531e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_957cf268-3a50-4e55-b32f-0257f473531e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_957cf268-3a50-4e55-b32f-0257f473531e" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_957cf268-3a50-4e55-b32f-0257f473531e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_e2006f02-1142-4360-9f5e-eaa8cd8b5087" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_957cf268-3a50-4e55-b32f-0257f473531e" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_e2006f02-1142-4360-9f5e-eaa8cd8b5087" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_LexusFranchiseMember_d1f977b8-672a-4477-bf7e-d2995385cc76" xlink:href="abg-20250630.xsd#abg_LexusFranchiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_e2006f02-1142-4360-9f5e-eaa8cd8b5087" xlink:to="loc_abg_LexusFranchiseMember_d1f977b8-672a-4477-bf7e-d2995385cc76" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NissanFranchiseMember_cbe8120f-e89f-44ec-84c8-f58a5ae3ed61" xlink:href="abg-20250630.xsd#abg_NissanFranchiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_e2006f02-1142-4360-9f5e-eaa8cd8b5087" xlink:to="loc_abg_NissanFranchiseMember_cbe8120f-e89f-44ec-84c8-f58a5ae3ed61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_VolvoFranchiseMember_d4aa24fa-f30f-49aa-9f46-28d99c6a6ccc" xlink:href="abg-20250630.xsd#abg_VolvoFranchiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_e2006f02-1142-4360-9f5e-eaa8cd8b5087" xlink:to="loc_abg_VolvoFranchiseMember_d4aa24fa-f30f-49aa-9f46-28d99c6a6ccc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ToyotaFranchiseMember_e4710212-e275-417f-8d57-a9eee573305c" xlink:href="abg-20250630.xsd#abg_ToyotaFranchiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_e2006f02-1142-4360-9f5e-eaa8cd8b5087" xlink:to="loc_abg_ToyotaFranchiseMember_e4710212-e275-417f-8d57-a9eee573305c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ChevroletFranchiseMember_3b344389-4220-4f63-a705-232c8e5ad091" xlink:href="abg-20250630.xsd#abg_ChevroletFranchiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_e2006f02-1142-4360-9f5e-eaa8cd8b5087" xlink:to="loc_abg_ChevroletFranchiseMember_3b344389-4220-4f63-a705-232c8e5ad091" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ChryslerJeepDodgeRamFranchiseMember_ab25b0b2-c732-49d9-acae-8ca44a41981c" xlink:href="abg-20250630.xsd#abg_ChryslerJeepDodgeRamFranchiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_e2006f02-1142-4360-9f5e-eaa8cd8b5087" xlink:to="loc_abg_ChryslerJeepDodgeRamFranchiseMember_ab25b0b2-c732-49d9-acae-8ca44a41981c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FordFranchiseMember_b656573b-6f55-4b89-8b7c-5e4ac7397752" xlink:href="abg-20250630.xsd#abg_FordFranchiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_e2006f02-1142-4360-9f5e-eaa8cd8b5087" xlink:to="loc_abg_FordFranchiseMember_b656573b-6f55-4b89-8b7c-5e4ac7397752" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateMember_358cb877-9503-4ac7-8512-d097303340ad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_e2006f02-1142-4360-9f5e-eaa8cd8b5087" xlink:to="loc_us-gaap_RealEstateMember_358cb877-9503-4ac7-8512-d097303340ad" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_6c90bf9e-d791-47ec-8275-e251b8980ca7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8937f3b2-36d1-4a2b-b55d-6f5492093260" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_6c90bf9e-d791-47ec-8275-e251b8980ca7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_6c90bf9e-d791-47ec-8275-e251b8980ca7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_6c90bf9e-d791-47ec-8275-e251b8980ca7" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_6c90bf9e-d791-47ec-8275-e251b8980ca7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_5ae450fb-97e2-4738-a3e4-2c009cb4fc24" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_6c90bf9e-d791-47ec-8275-e251b8980ca7" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_5ae450fb-97e2-4738-a3e4-2c009cb4fc24" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_61320385-7c65-441f-ad48-ae6351c2c797" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_5ae450fb-97e2-4738-a3e4-2c009cb4fc24" xlink:to="loc_us-gaap_SubsequentEventMember_61320385-7c65-441f-ad48-ae6351c2c797" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_9d94c0d8-66c3-4bec-a3f4-531ad1f73ad0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_9d94c0d8-66c3-4bec-a3f4-531ad1f73ad0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_c6f8bfc7-ce25-4885-968f-35250179a4b7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_us-gaap_Goodwill_c6f8bfc7-ce25-4885-968f-35250179a4b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesToBeAssumedRealEstateAndLeaseholdImprovements_2c0b4b4f-a9e7-4f18-be0d-457f5b8a030b" xlink:href="abg-20250630.xsd#abg_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesToBeAssumedRealEstateAndLeaseholdImprovements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_abg_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesToBeAssumedRealEstateAndLeaseholdImprovements_2c0b4b4f-a9e7-4f18-be0d-457f5b8a030b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesToBeAssumedNewUsedAndServieLoanerVehiclesFixedAssetsAndPartsAndSupplies_a9c56da5-70cf-43b3-a2d5-6b1abe0146f4" xlink:href="abg-20250630.xsd#abg_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesToBeAssumedNewUsedAndServieLoanerVehiclesFixedAssetsAndPartsAndSupplies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_abg_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesToBeAssumedNewUsedAndServieLoanerVehiclesFixedAssetsAndPartsAndSupplies_a9c56da5-70cf-43b3-a2d5-6b1abe0146f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_BusinessCombinationDealershipsAcquired_b6149b51-89b1-4caa-b5e3-2d99bcb82452" xlink:href="abg-20250630.xsd#abg_BusinessCombinationDealershipsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_abg_BusinessCombinationDealershipsAcquired_b6149b51-89b1-4caa-b5e3-2d99bcb82452" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_BusinessCombinationFranchisesAcquired_db3ee88b-e40d-489f-a4c4-cdd9f8f8e3a9" xlink:href="abg-20250630.xsd#abg_BusinessCombinationFranchisesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_abg_BusinessCombinationFranchisesAcquired_db3ee88b-e40d-489f-a4c4-cdd9f8f8e3a9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_BusinessCombinationCollisionCentersAcquired_8fecef71-5df7-4828-87a1-4cf78609f0e0" xlink:href="abg-20250630.xsd#abg_BusinessCombinationCollisionCentersAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_abg_BusinessCombinationCollisionCentersAcquired_8fecef71-5df7-4828-87a1-4cf78609f0e0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_20de7ca4-5940-43ed-a491-6fa9cc00ef44" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_20de7ca4-5940-43ed-a491-6fa9cc00ef44" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfBusinessesAcquired_5ff94168-cd71-4c81-8c16-fec8fb6a6c38" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NumberOfBusinessesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_us-gaap_NumberOfBusinessesAcquired_5ff94168-cd71-4c81-8c16-fec8fb6a6c38" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NumberOfFranchisesSold_f7adfc3d-5e39-497e-add6-7f459f767428" xlink:href="abg-20250630.xsd#abg_NumberOfFranchisesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_abg_NumberOfFranchisesSold_f7adfc3d-5e39-497e-add6-7f459f767428" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NumberOfDealershipLocationsSold_9640370e-4288-420a-8ecc-6d3746e91919" xlink:href="abg-20250630.xsd#abg_NumberOfDealershipLocationsSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_abg_NumberOfDealershipLocationsSold_9640370e-4288-420a-8ecc-6d3746e91919" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_76bf6b19-68e3-4947-819a-33f54cbe67f2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_76bf6b19-68e3-4947-819a-33f54cbe67f2" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NumberOfAssetsHeldForSale_49ffb6c4-7cf3-44f8-a546-a5e000f449da" xlink:href="abg-20250630.xsd#abg_NumberOfAssetsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8b4c3006-350a-4a52-a88c-d614f0bdfed2" xlink:to="loc_abg_NumberOfAssetsHeldForSale_49ffb6c4-7cf3-44f8-a546-a5e000f449da" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/ACCOUNTSRECEIVABLEDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#ACCOUNTSRECEIVABLEDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/ACCOUNTSRECEIVABLEDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_e177e669-80d9-4b79-9470-95257b4767bc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_89841997-fbf4-4ee7-a4e0-30b344c02a8d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_e177e669-80d9-4b79-9470-95257b4767bc" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_89841997-fbf4-4ee7-a4e0-30b344c02a8d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_88ba4973-18a6-4a0a-97b7-593725250e5e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_89841997-fbf4-4ee7-a4e0-30b344c02a8d" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_88ba4973-18a6-4a0a-97b7-593725250e5e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_88ba4973-18a6-4a0a-97b7-593725250e5e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_88ba4973-18a6-4a0a-97b7-593725250e5e" xlink:to="loc_us-gaap_ReceivableTypeDomain_88ba4973-18a6-4a0a-97b7-593725250e5e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_5a3dffc3-0512-4822-8329-29184bde0cb6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_88ba4973-18a6-4a0a-97b7-593725250e5e" xlink:to="loc_us-gaap_ReceivableTypeDomain_5a3dffc3-0512-4822-8329-29184bde0cb6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_VehicleReceivablesMember_314e4ccf-5e8e-498c-8c22-316846676c18" xlink:href="abg-20250630.xsd#abg_VehicleReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_5a3dffc3-0512-4822-8329-29184bde0cb6" xlink:to="loc_abg_VehicleReceivablesMember_314e4ccf-5e8e-498c-8c22-316846676c18" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ManufacturerReceivablesMember_cf6da9fa-4641-4023-98e1-8564c025fd2d" xlink:href="abg-20250630.xsd#abg_ManufacturerReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_5a3dffc3-0512-4822-8329-29184bde0cb6" xlink:to="loc_abg_ManufacturerReceivablesMember_cf6da9fa-4641-4023-98e1-8564c025fd2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_OtherTradeAccountsReceivableMember_a6027b56-df53-41db-a4fe-3aa99928feb3" xlink:href="abg-20250630.xsd#abg_OtherTradeAccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_5a3dffc3-0512-4822-8329-29184bde0cb6" xlink:to="loc_abg_OtherTradeAccountsReceivableMember_a6027b56-df53-41db-a4fe-3aa99928feb3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_e28208da-91ff-4a73-adeb-06c89868b09c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_e177e669-80d9-4b79-9470-95257b4767bc" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_e28208da-91ff-4a73-adeb-06c89868b09c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_a448a870-2a26-479d-96dd-9c926627bae7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_e177e669-80d9-4b79-9470-95257b4767bc" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_a448a870-2a26-479d-96dd-9c926627bae7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrent_9ccc0261-f326-43eb-90dd-1599680793d3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReceivablesNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_e177e669-80d9-4b79-9470-95257b4767bc" xlink:to="loc_us-gaap_ReceivablesNetCurrent_9ccc0261-f326-43eb-90dd-1599680793d3" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/INVENTORIESDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#INVENTORIESDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/INVENTORIESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_abg_ComponentsOfInventoryLineItems_6f6671b1-7e29-4481-9da9-291a77f9fed6" xlink:href="abg-20250630.xsd#abg_ComponentsOfInventoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ScheduleOfComponentsOfInventoryTable_0c14a292-e974-4848-b269-a5ff0abb598e" xlink:href="abg-20250630.xsd#abg_ScheduleOfComponentsOfInventoryTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_abg_ComponentsOfInventoryLineItems_6f6671b1-7e29-4481-9da9-291a77f9fed6" xlink:to="loc_abg_ScheduleOfComponentsOfInventoryTable_0c14a292-e974-4848-b269-a5ff0abb598e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ComponentsOfInventoryAxis_ba3fd71c-95b1-458b-8116-a37a4025b369" xlink:href="abg-20250630.xsd#abg_ComponentsOfInventoryAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_abg_ScheduleOfComponentsOfInventoryTable_0c14a292-e974-4848-b269-a5ff0abb598e" xlink:to="loc_abg_ComponentsOfInventoryAxis_ba3fd71c-95b1-458b-8116-a37a4025b369" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ComponentOfInventoryDomain_ba3fd71c-95b1-458b-8116-a37a4025b369_default" xlink:href="abg-20250630.xsd#abg_ComponentOfInventoryDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_abg_ComponentsOfInventoryAxis_ba3fd71c-95b1-458b-8116-a37a4025b369" xlink:to="loc_abg_ComponentOfInventoryDomain_ba3fd71c-95b1-458b-8116-a37a4025b369_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ComponentOfInventoryDomain_be299378-347e-44cb-8665-2276d9023933" xlink:href="abg-20250630.xsd#abg_ComponentOfInventoryDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_abg_ComponentsOfInventoryAxis_ba3fd71c-95b1-458b-8116-a37a4025b369" xlink:to="loc_abg_ComponentOfInventoryDomain_be299378-347e-44cb-8665-2276d9023933" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NewVehiclesMember_8ed020e1-41b3-43b6-87fd-527b446b0cbb" xlink:href="abg-20250630.xsd#abg_NewVehiclesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ComponentOfInventoryDomain_be299378-347e-44cb-8665-2276d9023933" xlink:to="loc_abg_NewVehiclesMember_8ed020e1-41b3-43b6-87fd-527b446b0cbb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_UsedVehiclesMember_16e54296-262e-4ca4-8b8d-696cdc60ca34" xlink:href="abg-20250630.xsd#abg_UsedVehiclesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ComponentOfInventoryDomain_be299378-347e-44cb-8665-2276d9023933" xlink:to="loc_abg_UsedVehiclesMember_16e54296-262e-4ca4-8b8d-696cdc60ca34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_PartsAndAccessoriesMember_35c21207-660c-4a5e-bffa-dfa84f982eb9" xlink:href="abg-20250630.xsd#abg_PartsAndAccessoriesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ComponentOfInventoryDomain_be299378-347e-44cb-8665-2276d9023933" xlink:to="loc_abg_PartsAndAccessoriesMember_35c21207-660c-4a5e-bffa-dfa84f982eb9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_27f21bb2-58bf-4965-94ca-89d78ff3192d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_abg_ScheduleOfComponentsOfInventoryTable_0c14a292-e974-4848-b269-a5ff0abb598e" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_27f21bb2-58bf-4965-94ca-89d78ff3192d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_27f21bb2-58bf-4965-94ca-89d78ff3192d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_27f21bb2-58bf-4965-94ca-89d78ff3192d" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_27f21bb2-58bf-4965-94ca-89d78ff3192d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_d77672e0-ea92-479f-b909-681461ab74b4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_27f21bb2-58bf-4965-94ca-89d78ff3192d" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_d77672e0-ea92-479f-b909-681461ab74b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_e5864883-7e12-442f-a774-ca09df75ec44" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_d77672e0-ea92-479f-b909-681461ab74b4" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_e5864883-7e12-442f-a774-ca09df75ec44" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_8b74f3f5-338b-45b2-b8b8-3147027b3a74" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ComponentsOfInventoryLineItems_6f6671b1-7e29-4481-9da9-291a77f9fed6" xlink:to="loc_us-gaap_InventoryNet_8b74f3f5-338b-45b2-b8b8-3147027b3a74" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryAdjustments_472ba856-ffb6-4bf4-91d9-5f38c78b9ffd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InventoryAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ComponentsOfInventoryLineItems_6f6671b1-7e29-4481-9da9-291a77f9fed6" xlink:to="loc_us-gaap_InventoryAdjustments_472ba856-ffb6-4bf4-91d9-5f38c78b9ffd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ReductionToNewVehicleCostOfSalesByAutomobileManufacturerIncentives_03ff8891-0432-41d9-aa33-96ed17ce6910" xlink:href="abg-20250630.xsd#abg_ReductionToNewVehicleCostOfSalesByAutomobileManufacturerIncentives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_ComponentsOfInventoryLineItems_6f6671b1-7e29-4481-9da9-291a77f9fed6" xlink:to="loc_abg_ReductionToNewVehicleCostOfSalesByAutomobileManufacturerIncentives_03ff8891-0432-41d9-aa33-96ed17ce6910" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/ASSETSANDLIABILITIESHELDFORSALENarrativeDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#ASSETSANDLIABILITIESHELDFORSALENarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/ASSETSANDLIABILITIESHELDFORSALENarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_43d57852-d1cd-43c4-b0e5-421a1ae755ce" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongLivedAssetsHeldForSaleLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_dabb20ae-7ab1-4e0d-af84-d7172d0e8f15" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_43d57852-d1cd-43c4-b0e5-421a1ae755ce" xlink:to="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_dabb20ae-7ab1-4e0d-af84-d7172d0e8f15" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_dd0f3df0-6f0e-4979-9605-4365c6244b3c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_dabb20ae-7ab1-4e0d-af84-d7172d0e8f15" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_dd0f3df0-6f0e-4979-9605-4365c6244b3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_dd0f3df0-6f0e-4979-9605-4365c6244b3c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_dd0f3df0-6f0e-4979-9605-4365c6244b3c" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_dd0f3df0-6f0e-4979-9605-4365c6244b3c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_3503e2a9-e568-4594-8440-f02003ef4f2e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_dd0f3df0-6f0e-4979-9605-4365c6244b3c" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_3503e2a9-e568-4594-8440-f02003ef4f2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_cf4f5068-3c25-4595-8081-e3e9b701ae88" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_3503e2a9-e568-4594-8440-f02003ef4f2e" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_cf4f5068-3c25-4595-8081-e3e9b701ae88" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_18ede323-6309-4ae1-bae1-6618db57359b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_dabb20ae-7ab1-4e0d-af84-d7172d0e8f15" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_18ede323-6309-4ae1-bae1-6618db57359b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_18ede323-6309-4ae1-bae1-6618db57359b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_18ede323-6309-4ae1-bae1-6618db57359b" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_18ede323-6309-4ae1-bae1-6618db57359b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_f4afb91c-c5f1-4898-a7c7-bff9e3f55073" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_18ede323-6309-4ae1-bae1-6618db57359b" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_f4afb91c-c5f1-4898-a7c7-bff9e3f55073" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchiseMember_3f17a4e0-ea45-424f-8bda-18a0e05b57e0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FranchiseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_f4afb91c-c5f1-4898-a7c7-bff9e3f55073" xlink:to="loc_us-gaap_FranchiseMember_3f17a4e0-ea45-424f-8bda-18a0e05b57e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DealershipLocationMember_25ec6e4c-bef9-4254-a973-6ec41f689c3c" xlink:href="abg-20250630.xsd#abg_DealershipLocationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_f4afb91c-c5f1-4898-a7c7-bff9e3f55073" xlink:to="loc_abg_DealershipLocationMember_25ec6e4c-bef9-4254-a973-6ec41f689c3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateMember_4b0e0597-b38a-4463-8f95-de3e730ed0a4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_f4afb91c-c5f1-4898-a7c7-bff9e3f55073" xlink:to="loc_us-gaap_RealEstateMember_4b0e0597-b38a-4463-8f95-de3e730ed0a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_78f6288a-9116-4f9f-b93a-91e8c816289f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_dabb20ae-7ab1-4e0d-af84-d7172d0e8f15" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_78f6288a-9116-4f9f-b93a-91e8c816289f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_78f6288a-9116-4f9f-b93a-91e8c816289f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_78f6288a-9116-4f9f-b93a-91e8c816289f" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_78f6288a-9116-4f9f-b93a-91e8c816289f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_3474c0a7-9b5f-4821-9976-0dd55ca1ec0d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_78f6288a-9116-4f9f-b93a-91e8c816289f" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_3474c0a7-9b5f-4821-9976-0dd55ca1ec0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_eb6dcba1-7362-40ac-8287-e6d5823ea893" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_3474c0a7-9b5f-4821-9976-0dd55ca1ec0d" xlink:to="loc_us-gaap_SubsequentEventMember_eb6dcba1-7362-40ac-8287-e6d5823ea893" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NumberOfAssetsHeldForSale_2f725286-a843-4590-957a-9145fe46de90" xlink:href="abg-20250630.xsd#abg_NumberOfAssetsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_43d57852-d1cd-43c4-b0e5-421a1ae755ce" xlink:to="loc_abg_NumberOfAssetsHeldForSale_2f725286-a843-4590-957a-9145fe46de90" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_663b5505-b5b7-4ef8-b725-f66137b0c093" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_43d57852-d1cd-43c4-b0e5-421a1ae755ce" xlink:to="loc_us-gaap_AssetImpairmentCharges_663b5505-b5b7-4ef8-b725-f66137b0c093" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NumberOfFranchisesSold_69894fad-73f1-4091-8c30-188652932964" xlink:href="abg-20250630.xsd#abg_NumberOfFranchisesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_43d57852-d1cd-43c4-b0e5-421a1ae755ce" xlink:to="loc_abg_NumberOfFranchisesSold_69894fad-73f1-4091-8c30-188652932964" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NumberOfDealershipLocationsSold_ca700845-6d9b-45d8-847c-c61e7cd964ef" xlink:href="abg-20250630.xsd#abg_NumberOfDealershipLocationsSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_43d57852-d1cd-43c4-b0e5-421a1ae755ce" xlink:to="loc_abg_NumberOfDealershipLocationsSold_ca700845-6d9b-45d8-847c-c61e7cd964ef" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/INVESTMENTSCarryingAmountsofInvestmentsDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#INVESTMENTSCarryingAmountsofInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/INVESTMENTSCarryingAmountsofInvestmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa80ff5-8119-4a59-b779-0b15472f6742" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_b98d27b1-a355-459d-b670-85219a5756cd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa80ff5-8119-4a59-b779-0b15472f6742" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_b98d27b1-a355-459d-b670-85219a5756cd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_30d39af5-5ef3-4164-ac92-ac3949fbb5d2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_b98d27b1-a355-459d-b670-85219a5756cd" xlink:to="loc_us-gaap_FinancialInstrumentAxis_30d39af5-5ef3-4164-ac92-ac3949fbb5d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_30d39af5-5ef3-4164-ac92-ac3949fbb5d2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_30d39af5-5ef3-4164-ac92-ac3949fbb5d2" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_30d39af5-5ef3-4164-ac92-ac3949fbb5d2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_05ec86b6-03d3-4938-a216-42cd6342c003" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_30d39af5-5ef3-4164-ac92-ac3949fbb5d2" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_05ec86b6-03d3-4938-a216-42cd6342c003" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestmentsMember_5954769a-99e6-4f3b-97e8-ca378ffdd5fb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShortTermInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_05ec86b6-03d3-4938-a216-42cd6342c003" xlink:to="loc_us-gaap_ShortTermInvestmentsMember_5954769a-99e6-4f3b-97e8-ca378ffdd5fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_a4c7b1eb-bcf0-495f-80ca-6fd95d8a1aac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_05ec86b6-03d3-4938-a216-42cd6342c003" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_a4c7b1eb-bcf0-495f-80ca-6fd95d8a1aac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MunicipalBondsMember_4d269ba8-3110-45af-98fc-8120435efa61" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MunicipalBondsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_05ec86b6-03d3-4938-a216-42cd6342c003" xlink:to="loc_us-gaap_MunicipalBondsMember_4d269ba8-3110-45af-98fc-8120435efa61" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_2dfe2b03-c68a-47d4-b4e3-21f1633d759a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_05ec86b6-03d3-4938-a216-42cd6342c003" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_2dfe2b03-c68a-47d4-b4e3-21f1633d759a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_MortgageAndOtherAssetsBackedSecuritiesMember_9b819c25-3e23-4ee4-a069-86533fdd2182" xlink:href="abg-20250630.xsd#abg_MortgageAndOtherAssetsBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_05ec86b6-03d3-4938-a216-42cd6342c003" xlink:to="loc_abg_MortgageAndOtherAssetsBackedSecuritiesMember_9b819c25-3e23-4ee4-a069-86533fdd2182" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_9e71ce2d-1989-4851-b0bc-83fa2162f74f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa80ff5-8119-4a59-b779-0b15472f6742" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_9e71ce2d-1989-4851-b0bc-83fa2162f74f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_40c76147-3cc9-46c3-acac-8c55a5aee7bc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa80ff5-8119-4a59-b779-0b15472f6742" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_40c76147-3cc9-46c3-acac-8c55a5aee7bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_03731da4-75a5-4da8-b96c-565e222b89ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa80ff5-8119-4a59-b779-0b15472f6742" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_03731da4-75a5-4da8-b96c-565e222b89ec" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_69166350-cd3d-4fc3-aa8f-d7bc8ea9e1bf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_daa80ff5-8119-4a59-b779-0b15472f6742" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_69166350-cd3d-4fc3-aa8f-d7bc8ea9e1bf" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/INVESTMENTSAmortizedCostandFairValueofTCAsInvestmentDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#INVESTMENTSAmortizedCostandFairValueofTCAsInvestmentDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/INVESTMENTSAmortizedCostandFairValueofTCAsInvestmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_16eefd9f-b374-45c6-bf82-ed330e5ead39" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f68560fe-b4a0-4f1f-84ea-66757d29dea0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_16eefd9f-b374-45c6-bf82-ed330e5ead39" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f68560fe-b4a0-4f1f-84ea-66757d29dea0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_2e5dad98-5e4b-48d7-9214-8c863bf22533" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_f68560fe-b4a0-4f1f-84ea-66757d29dea0" xlink:to="loc_us-gaap_FinancialInstrumentAxis_2e5dad98-5e4b-48d7-9214-8c863bf22533" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2e5dad98-5e4b-48d7-9214-8c863bf22533_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_2e5dad98-5e4b-48d7-9214-8c863bf22533" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2e5dad98-5e4b-48d7-9214-8c863bf22533_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_033a3e0d-c78c-40d5-895f-7669114c0bbe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_2e5dad98-5e4b-48d7-9214-8c863bf22533" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_033a3e0d-c78c-40d5-895f-7669114c0bbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_MortgageAndOtherAssetsBackedSecuritiesMember_2f0ef33d-8308-4b8d-a0fc-117469603095" xlink:href="abg-20250630.xsd#abg_MortgageAndOtherAssetsBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_033a3e0d-c78c-40d5-895f-7669114c0bbe" xlink:to="loc_abg_MortgageAndOtherAssetsBackedSecuritiesMember_2f0ef33d-8308-4b8d-a0fc-117469603095" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_a5b7b5c4-0366-4a72-b5a3-4f7e3dc5ee9d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_16eefd9f-b374-45c6-bf82-ed330e5ead39" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_a5b7b5c4-0366-4a72-b5a3-4f7e3dc5ee9d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_04273459-7fb1-4fbb-ba8f-109cd2ed4218" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_a5b7b5c4-0366-4a72-b5a3-4f7e3dc5ee9d" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_04273459-7fb1-4fbb-ba8f-109cd2ed4218" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_47a95fde-f121-413e-ac9d-f449f9944625" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_a5b7b5c4-0366-4a72-b5a3-4f7e3dc5ee9d" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_47a95fde-f121-413e-ac9d-f449f9944625" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_12b23644-9301-4ea0-b1f3-f2a793983536" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_a5b7b5c4-0366-4a72-b5a3-4f7e3dc5ee9d" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_12b23644-9301-4ea0-b1f3-f2a793983536" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_fe5ad5f9-cd0d-4d54-8f81-33a9d70e9f3a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_a5b7b5c4-0366-4a72-b5a3-4f7e3dc5ee9d" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_fe5ad5f9-cd0d-4d54-8f81-33a9d70e9f3a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_93820713-4e0f-468d-8dce-c8f37fecbfbf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_a5b7b5c4-0366-4a72-b5a3-4f7e3dc5ee9d" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis_93820713-4e0f-468d-8dce-c8f37fecbfbf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_768859ea-3f6d-4db1-803e-e53fea3c90db" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_16eefd9f-b374-45c6-bf82-ed330e5ead39" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_768859ea-3f6d-4db1-803e-e53fea3c90db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_233ed090-80b5-45d1-87d4-e6ed68e6c20e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_768859ea-3f6d-4db1-803e-e53fea3c90db" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_233ed090-80b5-45d1-87d4-e6ed68e6c20e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_229285c1-7433-43d1-b52c-74e28d40e133" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_768859ea-3f6d-4db1-803e-e53fea3c90db" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_229285c1-7433-43d1-b52c-74e28d40e133" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_2fcccc28-24bc-44b9-8218-881c8e82711a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_768859ea-3f6d-4db1-803e-e53fea3c90db" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_2fcccc28-24bc-44b9-8218-881c8e82711a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_d7dabb91-7ff4-41b7-b9ec-15b265d3ee8d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_768859ea-3f6d-4db1-803e-e53fea3c90db" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_d7dabb91-7ff4-41b7-b9ec-15b265d3ee8d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_74937886-71da-462e-8533-bd3bde5f5599" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_768859ea-3f6d-4db1-803e-e53fea3c90db" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate_74937886-71da-462e-8533-bd3bde5f5599" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_c64773b7-ee9b-418d-b73d-e01a4681d9b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_16eefd9f-b374-45c6-bf82-ed330e5ead39" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_c64773b7-ee9b-418d-b73d-e01a4681d9b3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_decdb3ee-7fe0-4980-a5fc-56704d401ccb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_16eefd9f-b374-45c6-bf82-ed330e5ead39" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_decdb3ee-7fe0-4980-a5fc-56704d401ccb" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/INVESTMENTSScheduleofGrossRealizedGainsandLossesDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#INVESTMENTSScheduleofGrossRealizedGainsandLossesDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/INVESTMENTSScheduleofGrossRealizedGainsandLossesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems_bfe20b3f-61da-4b4e-b557-d464544a1255" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGainLossOnInvestmentsTable_69e22bb7-aabd-4284-b966-2ad838066f37" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfGainLossOnInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems_bfe20b3f-61da-4b4e-b557-d464544a1255" xlink:to="loc_us-gaap_ScheduleOfGainLossOnInvestmentsTable_69e22bb7-aabd-4284-b966-2ad838066f37" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_4c8091d6-b7e0-4d20-8083-ad770a0a660a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGainLossOnInvestmentsTable_69e22bb7-aabd-4284-b966-2ad838066f37" xlink:to="loc_us-gaap_FinancialInstrumentAxis_4c8091d6-b7e0-4d20-8083-ad770a0a660a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_4c8091d6-b7e0-4d20-8083-ad770a0a660a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_4c8091d6-b7e0-4d20-8083-ad770a0a660a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_4c8091d6-b7e0-4d20-8083-ad770a0a660a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cfd8c1fc-51d0-4cdb-87db-a32afe15318f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_4c8091d6-b7e0-4d20-8083-ad770a0a660a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cfd8c1fc-51d0-4cdb-87db-a32afe15318f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestmentsMember_37a79814-a52b-424f-bdce-501a7ee646e8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShortTermInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cfd8c1fc-51d0-4cdb-87db-a32afe15318f" xlink:to="loc_us-gaap_ShortTermInvestmentsMember_37a79814-a52b-424f-bdce-501a7ee646e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_b990df49-12da-41c8-9680-ba43b2c8d362" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cfd8c1fc-51d0-4cdb-87db-a32afe15318f" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_b990df49-12da-41c8-9680-ba43b2c8d362" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MunicipalBondsMember_d9c0bd1c-a3ce-464a-bcd5-fb8bf916a437" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MunicipalBondsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cfd8c1fc-51d0-4cdb-87db-a32afe15318f" xlink:to="loc_us-gaap_MunicipalBondsMember_d9c0bd1c-a3ce-464a-bcd5-fb8bf916a437" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_9daed8fc-2366-425e-a445-caa54ce9c261" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cfd8c1fc-51d0-4cdb-87db-a32afe15318f" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_9daed8fc-2366-425e-a445-caa54ce9c261" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_MortgageAndOtherAssetsBackedSecuritiesMember_627e8b8a-b4e0-4c0b-9ece-668b681db040" xlink:href="abg-20250630.xsd#abg_MortgageAndOtherAssetsBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cfd8c1fc-51d0-4cdb-87db-a32afe15318f" xlink:to="loc_abg_MortgageAndOtherAssetsBackedSecuritiesMember_627e8b8a-b4e0-4c0b-9ece-668b681db040" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_feff5986-3cde-43b0-8b7f-8ade037a60a4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems_bfe20b3f-61da-4b4e-b557-d464544a1255" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_feff5986-3cde-43b0-8b7f-8ade037a60a4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_5e419eee-be28-492e-8066-b4084ff25df8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems_bfe20b3f-61da-4b4e-b557-d464544a1255" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_5e419eee-be28-492e-8066-b4084ff25df8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_7baa1694-7181-47a3-8178-3217697428d8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems_bfe20b3f-61da-4b4e-b557-d464544a1255" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_7baa1694-7181-47a3-8178-3217697428d8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_208954dc-89d2-4b4c-8aaf-47463f222b02" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems_bfe20b3f-61da-4b4e-b557-d464544a1255" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_208954dc-89d2-4b4c-8aaf-47463f222b02" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_0b3160bf-c070-41d0-b559-20447f2b727d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems_bfe20b3f-61da-4b4e-b557-d464544a1255" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_0b3160bf-c070-41d0-b559-20447f2b727d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_9dcad92d-ed05-471a-8290-7d421796d92d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems_bfe20b3f-61da-4b4e-b557-d464544a1255" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_9dcad92d-ed05-471a-8290-7d421796d92d" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/FLOORPLANNOTESPAYABLENarrativeDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#FLOORPLANNOTESPAYABLENarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/FLOORPLANNOTESPAYABLENarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_abg_FloorPlanNotesPayableLineItems_49654eb6-11f2-45ad-b79e-0d45dc259eff" xlink:href="abg-20250630.xsd#abg_FloorPlanNotesPayableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FloorPlanNotesPayableTable_169edc54-343c-460c-bcc4-bbd13664228c" xlink:href="abg-20250630.xsd#abg_FloorPlanNotesPayableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_abg_FloorPlanNotesPayableLineItems_49654eb6-11f2-45ad-b79e-0d45dc259eff" xlink:to="loc_abg_FloorPlanNotesPayableTable_169edc54-343c-460c-bcc4-bbd13664228c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_1f404da2-e40c-428f-9f53-998bf6bd10df" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_abg_FloorPlanNotesPayableTable_169edc54-343c-460c-bcc4-bbd13664228c" xlink:to="loc_us-gaap_DebtInstrumentAxis_1f404da2-e40c-428f-9f53-998bf6bd10df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_1f404da2-e40c-428f-9f53-998bf6bd10df_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_1f404da2-e40c-428f-9f53-998bf6bd10df" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_1f404da2-e40c-428f-9f53-998bf6bd10df_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_07c71e78-b5cd-4c38-8a3d-df5f149a2825" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_1f404da2-e40c-428f-9f53-998bf6bd10df" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_07c71e78-b5cd-4c38-8a3d-df5f149a2825" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_LoanerVehicleNotesPayableBankOfAmericaMember_746e5a1c-0957-4a43-b92f-493f44d38058" xlink:href="abg-20250630.xsd#abg_LoanerVehicleNotesPayableBankOfAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_07c71e78-b5cd-4c38-8a3d-df5f149a2825" xlink:to="loc_abg_LoanerVehicleNotesPayableBankOfAmericaMember_746e5a1c-0957-4a43-b92f-493f44d38058" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_LoanerVehicleNotesPayableOEMsMember_ea7d228f-b26a-4dce-87c5-36233a81b3f6" xlink:href="abg-20250630.xsd#abg_LoanerVehicleNotesPayableOEMsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_07c71e78-b5cd-4c38-8a3d-df5f149a2825" xlink:to="loc_abg_LoanerVehicleNotesPayableOEMsMember_ea7d228f-b26a-4dce-87c5-36233a81b3f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_A2023SeniorCreditFacilityMember_bebe4edf-efc5-4155-ba7c-f268e9c84d19" xlink:href="abg-20250630.xsd#abg_A2023SeniorCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_07c71e78-b5cd-4c38-8a3d-df5f149a2825" xlink:to="loc_abg_A2023SeniorCreditFacilityMember_bebe4edf-efc5-4155-ba7c-f268e9c84d19" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_d2344a5c-e86c-4ca3-be8d-e642bfca3ed5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_abg_FloorPlanNotesPayableTable_169edc54-343c-460c-bcc4-bbd13664228c" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_d2344a5c-e86c-4ca3-be8d-e642bfca3ed5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_d2344a5c-e86c-4ca3-be8d-e642bfca3ed5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_d2344a5c-e86c-4ca3-be8d-e642bfca3ed5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_d2344a5c-e86c-4ca3-be8d-e642bfca3ed5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_3a4d55bd-a431-4289-86b9-5c9c84b76397" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_d2344a5c-e86c-4ca3-be8d-e642bfca3ed5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_3a4d55bd-a431-4289-86b9-5c9c84b76397" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_a453aacf-1142-4750-acce-8dc812911e53" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_3a4d55bd-a431-4289-86b9-5c9c84b76397" xlink:to="loc_us-gaap_LineOfCreditMember_a453aacf-1142-4750-acce-8dc812911e53" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_3cb693d5-0819-4562-83b7-accd318dcbb6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_abg_FloorPlanNotesPayableTable_169edc54-343c-460c-bcc4-bbd13664228c" xlink:to="loc_us-gaap_CreditFacilityAxis_3cb693d5-0819-4562-83b7-accd318dcbb6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_3cb693d5-0819-4562-83b7-accd318dcbb6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_3cb693d5-0819-4562-83b7-accd318dcbb6" xlink:to="loc_us-gaap_CreditFacilityDomain_3cb693d5-0819-4562-83b7-accd318dcbb6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_e1135ff8-03ec-4620-a2c5-5c21559caf34" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_3cb693d5-0819-4562-83b7-accd318dcbb6" xlink:to="loc_us-gaap_CreditFacilityDomain_e1135ff8-03ec-4620-a2c5-5c21559caf34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_fda9869b-36db-4042-84d3-5285207d15d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_e1135ff8-03ec-4620-a2c5-5c21559caf34" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_fda9869b-36db-4042-84d3-5285207d15d5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NewVehicleFloorPlanFacilityMember_f954609d-3292-4c4d-bdc4-aa941bb962ec" xlink:href="abg-20250630.xsd#abg_NewVehicleFloorPlanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_e1135ff8-03ec-4620-a2c5-5c21559caf34" xlink:to="loc_abg_NewVehicleFloorPlanFacilityMember_f954609d-3292-4c4d-bdc4-aa941bb962ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DebtInstrumentConversionMaximumConvertibleAmountAmountSubtractedFromContractualTotal_1219686f-8e33-469d-83e0-ba5be1bd17e7" xlink:href="abg-20250630.xsd#abg_DebtInstrumentConversionMaximumConvertibleAmountAmountSubtractedFromContractualTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_FloorPlanNotesPayableLineItems_49654eb6-11f2-45ad-b79e-0d45dc259eff" xlink:to="loc_abg_DebtInstrumentConversionMaximumConvertibleAmountAmountSubtractedFromContractualTotal_1219686f-8e33-469d-83e0-ba5be1bd17e7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_52a39638-6284-4aeb-a721-618153b4bb92" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_FloorPlanNotesPayableLineItems_49654eb6-11f2-45ad-b79e-0d45dc259eff" xlink:to="loc_us-gaap_NotesPayable_52a39638-6284-4aeb-a721-618153b4bb92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_36899cda-c378-4c41-a1d6-de153dca3be0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_abg_FloorPlanNotesPayableLineItems_49654eb6-11f2-45ad-b79e-0d45dc259eff" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_36899cda-c378-4c41-a1d6-de153dca3be0" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/DEBTScheduleofLongTermDebtDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#DEBTScheduleofLongTermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/DEBTScheduleofLongTermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_ef4ba702-fd56-40ed-89a4-bfc4605ed9d2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:to="loc_us-gaap_DebtInstrumentTable_ef4ba702-fd56-40ed-89a4-bfc4605ed9d2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_55ba5ee1-b755-4a1d-9090-e206fefb92ed" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ef4ba702-fd56-40ed-89a4-bfc4605ed9d2" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_55ba5ee1-b755-4a1d-9090-e206fefb92ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_55ba5ee1-b755-4a1d-9090-e206fefb92ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_55ba5ee1-b755-4a1d-9090-e206fefb92ed" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_55ba5ee1-b755-4a1d-9090-e206fefb92ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_cdcfc487-fed6-442f-967c-4a7f7a83ea2b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_55ba5ee1-b755-4a1d-9090-e206fefb92ed" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_cdcfc487-fed6-442f-967c-4a7f7a83ea2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_54558217-09a4-44e7-97c1-1575eade217a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_cdcfc487-fed6-442f-967c-4a7f7a83ea2b" xlink:to="loc_us-gaap_SeniorNotesMember_54558217-09a4-44e7-97c1-1575eade217a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgagesMember_cc9580d6-0883-45a0-a62b-475561d5f079" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MortgagesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_cdcfc487-fed6-442f-967c-4a7f7a83ea2b" xlink:to="loc_us-gaap_MortgagesMember_cc9580d6-0883-45a0-a62b-475561d5f079" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_A2021RealEstateFacilityMember_0c40af40-c32f-404a-8e5d-b24aed20a4b9" xlink:href="abg-20250630.xsd#abg_A2021RealEstateFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_cdcfc487-fed6-442f-967c-4a7f7a83ea2b" xlink:to="loc_abg_A2021RealEstateFacilityMember_0c40af40-c32f-404a-8e5d-b24aed20a4b9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_94db600c-ddf7-4b89-bf1f-976b97aa06f0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ef4ba702-fd56-40ed-89a4-bfc4605ed9d2" xlink:to="loc_us-gaap_DebtInstrumentAxis_94db600c-ddf7-4b89-bf1f-976b97aa06f0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_94db600c-ddf7-4b89-bf1f-976b97aa06f0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_94db600c-ddf7-4b89-bf1f-976b97aa06f0" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_94db600c-ddf7-4b89-bf1f-976b97aa06f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_94db600c-ddf7-4b89-bf1f-976b97aa06f0" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FourPointFiveZeroPercentSeniorNotesdue2028Member_a06c1342-dab6-45ff-9c8d-140bf9f71cf3" xlink:href="abg-20250630.xsd#abg_FourPointFiveZeroPercentSeniorNotesdue2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:to="loc_abg_FourPointFiveZeroPercentSeniorNotesdue2028Member_a06c1342-dab6-45ff-9c8d-140bf9f71cf3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FourPointSixTwoFivePercentSeniorNotesDue2029Member_6b9db3ec-b8d6-491d-b1a8-fe9d79faffc9" xlink:href="abg-20250630.xsd#abg_FourPointSixTwoFivePercentSeniorNotesDue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:to="loc_abg_FourPointSixTwoFivePercentSeniorNotesDue2029Member_6b9db3ec-b8d6-491d-b1a8-fe9d79faffc9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FourPointSevenFivePercentSeniorNotesdue2030Member_82ca44c7-664c-4f66-a874-b313f190e11e" xlink:href="abg-20250630.xsd#abg_FourPointSevenFivePercentSeniorNotesdue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:to="loc_abg_FourPointSevenFivePercentSeniorNotesdue2030Member_82ca44c7-664c-4f66-a874-b313f190e11e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FivePointZeroZeroPercentPercentSeniorNotesDue2029Member_dce7aaad-a574-4d00-883a-23705ec28094" xlink:href="abg-20250630.xsd#abg_FivePointZeroZeroPercentPercentSeniorNotesDue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:to="loc_abg_FivePointZeroZeroPercentPercentSeniorNotesDue2029Member_dce7aaad-a574-4d00-883a-23705ec28094" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_A2021RealEstateFacilityMember_851d43a0-200a-48f6-b0a2-f0d0859178bb" xlink:href="abg-20250630.xsd#abg_A2021RealEstateFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:to="loc_abg_A2021RealEstateFacilityMember_851d43a0-200a-48f6-b0a2-f0d0859178bb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_A2021BofARealEstateFacilityMember_8eb96a4e-0211-42da-b3e7-efb1565afc63" xlink:href="abg-20250630.xsd#abg_A2021BofARealEstateFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:to="loc_abg_A2021BofARealEstateFacilityMember_8eb96a4e-0211-42da-b3e7-efb1565afc63" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_A2018BofARealEstateFacilityMember_bba79182-b892-4a30-ab6e-ab09e3f895c9" xlink:href="abg-20250630.xsd#abg_A2018BofARealEstateFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:to="loc_abg_A2018BofARealEstateFacilityMember_bba79182-b892-4a30-ab6e-ab09e3f895c9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_A2018WellsFargoMasterLoanFacilityMember_fb1b487c-f518-4810-8f4d-457fb93facb1" xlink:href="abg-20250630.xsd#abg_A2018WellsFargoMasterLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:to="loc_abg_A2018WellsFargoMasterLoanFacilityMember_fb1b487c-f518-4810-8f4d-457fb93facb1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_A2015WellsFargoMasterLoanFacilityMember_3d90eee3-f7e5-4fb3-9d0d-9998c8e2cc43" xlink:href="abg-20250630.xsd#abg_A2015WellsFargoMasterLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e61414ea-1205-4ddc-acf7-636c55322f6d" xlink:to="loc_abg_A2015WellsFargoMasterLoanFacilityMember_3d90eee3-f7e5-4fb3-9d0d-9998c8e2cc43" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityAxis_39d647ba-5567-4f7e-a103-8c9aba29568c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ef4ba702-fd56-40ed-89a4-bfc4605ed9d2" xlink:to="loc_us-gaap_LineOfCreditFacilityAxis_39d647ba-5567-4f7e-a103-8c9aba29568c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_39d647ba-5567-4f7e-a103-8c9aba29568c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_39d647ba-5567-4f7e-a103-8c9aba29568c" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_39d647ba-5567-4f7e-a103-8c9aba29568c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_ff206e2b-dfd5-4b94-9c9c-bc4579dc435f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_39d647ba-5567-4f7e-a103-8c9aba29568c" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_ff206e2b-dfd5-4b94-9c9c-bc4579dc435f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_BankOfAmericaNAMember_b0460e33-4626-4176-b180-4727be9b28bc" xlink:href="abg-20250630.xsd#abg_BankOfAmericaNAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_ff206e2b-dfd5-4b94-9c9c-bc4579dc435f" xlink:to="loc_abg_BankOfAmericaNAMember_b0460e33-4626-4176-b180-4727be9b28bc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_WellsFargoBankNationalAssociationMember_6ea9c294-cb8b-4005-a8e6-74bbc98c6bb6" xlink:href="abg-20250630.xsd#abg_WellsFargoBankNationalAssociationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_ff206e2b-dfd5-4b94-9c9c-bc4579dc435f" xlink:to="loc_abg_WellsFargoBankNationalAssociationMember_6ea9c294-cb8b-4005-a8e6-74bbc98c6bb6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_adb746c7-fc62-4e15-ab98-8c58d0bada4a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_adb746c7-fc62-4e15-ab98-8c58d0bada4a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_b795b779-70d0-4348-9201-60a60e96d3ae" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_b795b779-70d0-4348-9201-60a60e96d3ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_19915f8b-7608-4d8f-b2de-0534dd049ebc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:to="loc_us-gaap_FinanceLeaseLiability_19915f8b-7608-4d8f-b2de-0534dd049ebc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_7888716a-fc18-4702-a4b0-9c64659c4f25" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_7888716a-fc18-4702-a4b0-9c64659c4f25" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedPremium_8e93447a-daf9-4aab-9f86-fbd0d1d76abe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentUnamortizedPremium"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedPremium_8e93447a-daf9-4aab-9f86-fbd0d1d76abe" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_223e96c1-0225-48f8-8422-870b82b474d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_223e96c1-0225-48f8-8422-870b82b474d5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_LongTermDebtAndLeaseObligationsIncludingUnamortizedPremiumDiscount_19e3ecb5-1cb7-4f8f-9db1-46760e8351d1" xlink:href="abg-20250630.xsd#abg_LongTermDebtAndLeaseObligationsIncludingUnamortizedPremiumDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:to="loc_abg_LongTermDebtAndLeaseObligationsIncludingUnamortizedPremiumDiscount_19e3ecb5-1cb7-4f8f-9db1-46760e8351d1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_8b7a0c5d-ffab-4966-a236-592b9d804ddf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_8b7a0c5d-ffab-4966-a236-592b9d804ddf" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_0895986f-9512-4869-95ef-4186ba7dd191" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ad724406-ed30-499b-bb27-a9f6dc4a54ca" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_0895986f-9512-4869-95ef-4186ba7dd191" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/LONGTERMDEBTNarrativeDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#LONGTERMDEBTNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/LONGTERMDEBTNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_f6275e47-af38-4b60-bccb-f6670ab84af8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_4b5ec1e8-50ba-4290-aa40-d251ac47149f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f6275e47-af38-4b60-bccb-f6670ab84af8" xlink:to="loc_us-gaap_DebtInstrumentTable_4b5ec1e8-50ba-4290-aa40-d251ac47149f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_81b779eb-1403-4079-ae24-3c1a7d112ae9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_4b5ec1e8-50ba-4290-aa40-d251ac47149f" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_81b779eb-1403-4079-ae24-3c1a7d112ae9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_81b779eb-1403-4079-ae24-3c1a7d112ae9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_81b779eb-1403-4079-ae24-3c1a7d112ae9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_81b779eb-1403-4079-ae24-3c1a7d112ae9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_72f77774-606e-4d81-9136-9e3a88ee8f53" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_81b779eb-1403-4079-ae24-3c1a7d112ae9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_72f77774-606e-4d81-9136-9e3a88ee8f53" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgagesMember_18cc3b8f-ebe9-4041-b541-cbdd565c5a37" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MortgagesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_72f77774-606e-4d81-9136-9e3a88ee8f53" xlink:to="loc_us-gaap_MortgagesMember_18cc3b8f-ebe9-4041-b541-cbdd565c5a37" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_3f3e3764-6fcd-4fe2-838d-dcd393e97d16" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_72f77774-606e-4d81-9136-9e3a88ee8f53" xlink:to="loc_us-gaap_LineOfCreditMember_3f3e3764-6fcd-4fe2-838d-dcd393e97d16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_df0d8995-3acc-4734-9a24-56969ba6bc13" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_4b5ec1e8-50ba-4290-aa40-d251ac47149f" xlink:to="loc_us-gaap_CreditFacilityAxis_df0d8995-3acc-4734-9a24-56969ba6bc13" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_df0d8995-3acc-4734-9a24-56969ba6bc13_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_df0d8995-3acc-4734-9a24-56969ba6bc13" xlink:to="loc_us-gaap_CreditFacilityDomain_df0d8995-3acc-4734-9a24-56969ba6bc13_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_07c6e9bd-42b2-4d48-927f-de5ba2d0d2c6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_df0d8995-3acc-4734-9a24-56969ba6bc13" xlink:to="loc_us-gaap_CreditFacilityDomain_07c6e9bd-42b2-4d48-927f-de5ba2d0d2c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_a62e1f65-67d5-49ec-bf46-9943244d8712" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_07c6e9bd-42b2-4d48-927f-de5ba2d0d2c6" xlink:to="loc_us-gaap_SecuredDebtMember_a62e1f65-67d5-49ec-bf46-9943244d8712" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_5a3df929-d209-414f-81f4-94f9300a6bef" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_4b5ec1e8-50ba-4290-aa40-d251ac47149f" xlink:to="loc_us-gaap_DebtInstrumentAxis_5a3df929-d209-414f-81f4-94f9300a6bef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5a3df929-d209-414f-81f4-94f9300a6bef_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_5a3df929-d209-414f-81f4-94f9300a6bef" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5a3df929-d209-414f-81f4-94f9300a6bef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_a38698ce-c036-4c75-9f4c-081faadd1231" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_5a3df929-d209-414f-81f4-94f9300a6bef" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_a38698ce-c036-4c75-9f4c-081faadd1231" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_A2025RealEstateFacilityMember_72aad221-21f4-4e2e-bfb5-33128ad40735" xlink:href="abg-20250630.xsd#abg_A2025RealEstateFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_a38698ce-c036-4c75-9f4c-081faadd1231" xlink:to="loc_abg_A2025RealEstateFacilityMember_72aad221-21f4-4e2e-bfb5-33128ad40735" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_f5f24462-1dc5-451b-acf3-683e0965881f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_4b5ec1e8-50ba-4290-aa40-d251ac47149f" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_f5f24462-1dc5-451b-acf3-683e0965881f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_f5f24462-1dc5-451b-acf3-683e0965881f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_f5f24462-1dc5-451b-acf3-683e0965881f" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_f5f24462-1dc5-451b-acf3-683e0965881f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_f3a9125d-f7a9-4b95-a6c6-1c67fbdc0e34" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_f5f24462-1dc5-451b-acf3-683e0965881f" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_f3a9125d-f7a9-4b95-a6c6-1c67fbdc0e34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_7347fe0b-942f-48b5-82ed-8eec647d3e9a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_f3a9125d-f7a9-4b95-a6c6-1c67fbdc0e34" xlink:to="loc_us-gaap_SubsequentEventMember_7347fe0b-942f-48b5-82ed-8eec647d3e9a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_f89d5697-ce65-4706-9d08-f6421ab5bfc6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_4b5ec1e8-50ba-4290-aa40-d251ac47149f" xlink:to="loc_us-gaap_VariableRateAxis_f89d5697-ce65-4706-9d08-f6421ab5bfc6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_f89d5697-ce65-4706-9d08-f6421ab5bfc6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_f89d5697-ce65-4706-9d08-f6421ab5bfc6" xlink:to="loc_us-gaap_VariableRateDomain_f89d5697-ce65-4706-9d08-f6421ab5bfc6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_bc47266f-2ffb-4ce9-ad4a-41dedccd013c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_f89d5697-ce65-4706-9d08-f6421ab5bfc6" xlink:to="loc_us-gaap_VariableRateDomain_bc47266f-2ffb-4ce9-ad4a-41dedccd013c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_47a73a4a-2180-4b9d-bd02-9ad012914354" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SecuredOvernightFinancingRateSofrMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bc47266f-2ffb-4ce9-ad4a-41dedccd013c" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_47a73a4a-2180-4b9d-bd02-9ad012914354" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_29d28c15-9ac1-480b-8a75-e3599296b8d2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bc47266f-2ffb-4ce9-ad4a-41dedccd013c" xlink:to="loc_us-gaap_BaseRateMember_29d28c15-9ac1-480b-8a75-e3599296b8d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_66851951-8002-4e81-9e05-d58c17b9ee34" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FederalFundsEffectiveSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bc47266f-2ffb-4ce9-ad4a-41dedccd013c" xlink:to="loc_us-gaap_FederalFundsEffectiveSwapRateMember_66851951-8002-4e81-9e05-d58c17b9ee34" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_b3c4bc4d-0b61-4749-b02f-029c20351e6f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bc47266f-2ffb-4ce9-ad4a-41dedccd013c" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_b3c4bc4d-0b61-4749-b02f-029c20351e6f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_a25caccf-1019-47bb-a36f-3b873a105aee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f6275e47-af38-4b60-bccb-f6670ab84af8" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_a25caccf-1019-47bb-a36f-3b873a105aee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_a38d79eb-1e80-4e8c-b3f1-ee9484ff8c06" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f6275e47-af38-4b60-bccb-f6670ab84af8" xlink:to="loc_us-gaap_DebtInstrumentTerm_a38d79eb-1e80-4e8c-b3f1-ee9484ff8c06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_940766f7-9b5d-448b-a257-51db21651acb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f6275e47-af38-4b60-bccb-f6670ab84af8" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_940766f7-9b5d-448b-a257-51db21651acb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DebtInstrumentNumberOfRequiredPrincipalPayments_372122f2-2c3c-4f49-ab7f-608aa8d30b15" xlink:href="abg-20250630.xsd#abg_DebtInstrumentNumberOfRequiredPrincipalPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_f6275e47-af38-4b60-bccb-f6670ab84af8" xlink:to="loc_abg_DebtInstrumentNumberOfRequiredPrincipalPayments_372122f2-2c3c-4f49-ab7f-608aa8d30b15" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofCarryingValuesandFairValuesofLiabilitiesDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofCarryingValuesandFairValuesofLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofCarryingValuesandFairValuesofLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_7c10f753-8063-495f-a08d-551256aad6d0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_915a5f65-891f-44a3-8869-6b5f50a71695" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_7c10f753-8063-495f-a08d-551256aad6d0" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_915a5f65-891f-44a3-8869-6b5f50a71695" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_bde7a703-bfc1-44b1-85da-a4a52a89762c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_915a5f65-891f-44a3-8869-6b5f50a71695" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_bde7a703-bfc1-44b1-85da-a4a52a89762c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_bde7a703-bfc1-44b1-85da-a4a52a89762c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_bde7a703-bfc1-44b1-85da-a4a52a89762c" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_bde7a703-bfc1-44b1-85da-a4a52a89762c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_5381766c-db37-4382-8f66-0866d8bb9b4b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_bde7a703-bfc1-44b1-85da-a4a52a89762c" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_5381766c-db37-4382-8f66-0866d8bb9b4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_800464c7-9bdc-45dc-a84d-e3d6b1e6d437" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_5381766c-db37-4382-8f66-0866d8bb9b4b" xlink:to="loc_us-gaap_SeniorNotesMember_800464c7-9bdc-45dc-a84d-e3d6b1e6d437" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgagesMember_0f9a3015-f331-423f-8edb-5c84c29e4b56" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MortgagesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_5381766c-db37-4382-8f66-0866d8bb9b4b" xlink:to="loc_us-gaap_MortgagesMember_0f9a3015-f331-423f-8edb-5c84c29e4b56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_f2dee8d1-923b-4e41-a979-5c158e3c9670" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_915a5f65-891f-44a3-8869-6b5f50a71695" xlink:to="loc_us-gaap_DebtInstrumentAxis_f2dee8d1-923b-4e41-a979-5c158e3c9670" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_f2dee8d1-923b-4e41-a979-5c158e3c9670_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_f2dee8d1-923b-4e41-a979-5c158e3c9670" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_f2dee8d1-923b-4e41-a979-5c158e3c9670_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_4b7e20b8-292d-4cae-88c5-1f2edcdb588e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_f2dee8d1-923b-4e41-a979-5c158e3c9670" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_4b7e20b8-292d-4cae-88c5-1f2edcdb588e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FourPointFiveZeroPercentSeniorNotesdue2028Member_3b8d2555-73b2-44c1-b6cb-a0c461aeeada" xlink:href="abg-20250630.xsd#abg_FourPointFiveZeroPercentSeniorNotesdue2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4b7e20b8-292d-4cae-88c5-1f2edcdb588e" xlink:to="loc_abg_FourPointFiveZeroPercentSeniorNotesdue2028Member_3b8d2555-73b2-44c1-b6cb-a0c461aeeada" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FourPointSixTwoFivePercentSeniorNotesDue2029Member_3c69fd3c-e202-4e41-b1b6-eb1fc9108ce0" xlink:href="abg-20250630.xsd#abg_FourPointSixTwoFivePercentSeniorNotesDue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4b7e20b8-292d-4cae-88c5-1f2edcdb588e" xlink:to="loc_abg_FourPointSixTwoFivePercentSeniorNotesDue2029Member_3c69fd3c-e202-4e41-b1b6-eb1fc9108ce0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FourPointSevenFivePercentSeniorNotesdue2030Member_8c7e5802-8e0d-402b-8f4f-5191823ef4fc" xlink:href="abg-20250630.xsd#abg_FourPointSevenFivePercentSeniorNotesdue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4b7e20b8-292d-4cae-88c5-1f2edcdb588e" xlink:to="loc_abg_FourPointSevenFivePercentSeniorNotesdue2030Member_8c7e5802-8e0d-402b-8f4f-5191823ef4fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FivePointZeroZeroPercentPercentSeniorNotesDue2029Member_468b7e61-9f86-4373-b933-f08faea6a422" xlink:href="abg-20250630.xsd#abg_FivePointZeroZeroPercentPercentSeniorNotesDue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4b7e20b8-292d-4cae-88c5-1f2edcdb588e" xlink:to="loc_abg_FivePointZeroZeroPercentPercentSeniorNotesDue2029Member_468b7e61-9f86-4373-b933-f08faea6a422" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_1110b1df-da19-4d46-9162-60684683387f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_915a5f65-891f-44a3-8869-6b5f50a71695" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_1110b1df-da19-4d46-9162-60684683387f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_1110b1df-da19-4d46-9162-60684683387f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_1110b1df-da19-4d46-9162-60684683387f" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_1110b1df-da19-4d46-9162-60684683387f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_08f7aac8-261f-413f-9b90-6bf84221499d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_1110b1df-da19-4d46-9162-60684683387f" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_08f7aac8-261f-413f-9b90-6bf84221499d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_deda142f-cced-4718-9f8d-a60bf01336e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_08f7aac8-261f-413f-9b90-6bf84221499d" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_deda142f-cced-4718-9f8d-a60bf01336e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_f1c0d5ff-9719-457d-9d51-f5f86a1cd455" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_deda142f-cced-4718-9f8d-a60bf01336e2" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_f1c0d5ff-9719-457d-9d51-f5f86a1cd455" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_f9c36979-e419-4346-ad19-5eb5ab524e5a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_deda142f-cced-4718-9f8d-a60bf01336e2" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_f9c36979-e419-4346-ad19-5eb5ab524e5a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_163a4e0c-b52b-4c70-bc18-174958cb8d11" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_7c10f753-8063-495f-a08d-551256aad6d0" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_163a4e0c-b52b-4c70-bc18-174958cb8d11" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_eb4ba02e-1cef-4e3d-9c93-0b47d39bf2a5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_7c10f753-8063-495f-a08d-551256aad6d0" xlink:to="loc_us-gaap_LongTermDebtFairValue_eb4ba02e-1cef-4e3d-9c93-0b47d39bf2a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_eaf7d6fa-a83a-40db-bf33-b4ca6908da6e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_7c10f753-8063-495f-a08d-551256aad6d0" xlink:to="loc_us-gaap_LongTermDebt_eaf7d6fa-a83a-40db-bf33-b4ca6908da6e" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUENarrativeDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#FINANCIALINSTRUMENTSANDFAIRVALUENarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUENarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_749796db-cd47-4278-a196-c535cafc79b7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_e9fa98ca-d089-44e6-8bfe-1cb3c97bcfc8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_749796db-cd47-4278-a196-c535cafc79b7" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_e9fa98ca-d089-44e6-8bfe-1cb3c97bcfc8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_84a506d0-fbeb-49f8-9559-6f3f210a9abb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_e9fa98ca-d089-44e6-8bfe-1cb3c97bcfc8" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_84a506d0-fbeb-49f8-9559-6f3f210a9abb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_84a506d0-fbeb-49f8-9559-6f3f210a9abb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_84a506d0-fbeb-49f8-9559-6f3f210a9abb" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_84a506d0-fbeb-49f8-9559-6f3f210a9abb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_4178aab4-fdd8-4159-a427-bec76101f6c3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_84a506d0-fbeb-49f8-9559-6f3f210a9abb" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_4178aab4-fdd8-4159-a427-bec76101f6c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_517f486c-d2cd-4be9-addb-6b8dafbed2ff" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_4178aab4-fdd8-4159-a427-bec76101f6c3" xlink:to="loc_us-gaap_InterestRateSwapMember_517f486c-d2cd-4be9-addb-6b8dafbed2ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_7b1256d2-6cd6-4cb2-a297-86ac4cf3f994" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeNumberOfInstrumentsHeld"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_749796db-cd47-4278-a196-c535cafc79b7" xlink:to="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_7b1256d2-6cd6-4cb2-a297-86ac4cf3f994" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet_bf74307a-97fa-43f7-b90c-9298b78469c5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_749796db-cd47-4278-a196-c535cafc79b7" xlink:to="loc_us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet_bf74307a-97fa-43f7-b90c-9298b78469c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet_cca35407-6e63-4940-984f-17f9e0213441" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_749796db-cd47-4278-a196-c535cafc79b7" xlink:to="loc_us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet_cca35407-6e63-4940-984f-17f9e0213441" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEInterestRateSwapAgreementsDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#FINANCIALINSTRUMENTSANDFAIRVALUEInterestRateSwapAgreementsDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEInterestRateSwapAgreementsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_f1b7c1df-a258-4827-b700-602607bc5ebb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_39cde6ff-9133-46c3-9348-4ac3561caaf0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_f1b7c1df-a258-4827-b700-602607bc5ebb" xlink:to="loc_us-gaap_DerivativeTable_39cde6ff-9133-46c3-9348-4ac3561caaf0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_83255b17-c620-49fb-be7a-8380f06f9f86" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_39cde6ff-9133-46c3-9348-4ac3561caaf0" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_83255b17-c620-49fb-be7a-8380f06f9f86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_83255b17-c620-49fb-be7a-8380f06f9f86_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_83255b17-c620-49fb-be7a-8380f06f9f86" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_83255b17-c620-49fb-be7a-8380f06f9f86_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_148d23b7-4582-41af-bbb7-49cb2a03a010" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_83255b17-c620-49fb-be7a-8380f06f9f86" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_148d23b7-4582-41af-bbb7-49cb2a03a010" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_7442380a-fefd-4c4e-9f9c-1616798b9c33" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_148d23b7-4582-41af-bbb7-49cb2a03a010" xlink:to="loc_us-gaap_InterestRateSwapMember_7442380a-fefd-4c4e-9f9c-1616798b9c33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_InterestRateSwapJanuary2022Member_838fc0c1-6c73-4aae-85c2-c72c8e416a1b" xlink:href="abg-20250630.xsd#abg_InterestRateSwapJanuary2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_148d23b7-4582-41af-bbb7-49cb2a03a010" xlink:to="loc_abg_InterestRateSwapJanuary2022Member_838fc0c1-6c73-4aae-85c2-c72c8e416a1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_InterestRateSwapMay2021Member_5e06496d-0c4b-40d6-aafe-40a6f2bf7115" xlink:href="abg-20250630.xsd#abg_InterestRateSwapMay2021Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_148d23b7-4582-41af-bbb7-49cb2a03a010" xlink:to="loc_abg_InterestRateSwapMay2021Member_5e06496d-0c4b-40d6-aafe-40a6f2bf7115" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_InterestRateSwapJuly2020Member_33d2aef2-4af8-486a-9b8d-7bbf4a5dce1c" xlink:href="abg-20250630.xsd#abg_InterestRateSwapJuly2020Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_148d23b7-4582-41af-bbb7-49cb2a03a010" xlink:to="loc_abg_InterestRateSwapJuly2020Member_33d2aef2-4af8-486a-9b8d-7bbf4a5dce1c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_InterestRateSwapJuly20201Member_d39fef3b-e03e-40b8-9bc2-f5aa63d1de72" xlink:href="abg-20250630.xsd#abg_InterestRateSwapJuly20201Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_148d23b7-4582-41af-bbb7-49cb2a03a010" xlink:to="loc_abg_InterestRateSwapJuly20201Member_d39fef3b-e03e-40b8-9bc2-f5aa63d1de72" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityNotionalAmount_f755bf50-0ac5-44b0-ae0e-34e17b76b5fc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLiabilityNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_f1b7c1df-a258-4827-b700-602607bc5ebb" xlink:to="loc_us-gaap_DerivativeLiabilityNotionalAmount_f755bf50-0ac5-44b0-ae0e-34e17b76b5fc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DerivativeLiabilityNotionalAmountAtMaturity_4abd4c3d-0406-4b2f-bec8-9367e149cfde" xlink:href="abg-20250630.xsd#abg_DerivativeLiabilityNotionalAmountAtMaturity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_f1b7c1df-a258-4827-b700-602607bc5ebb" xlink:to="loc_abg_DerivativeLiabilityNotionalAmountAtMaturity_4abd4c3d-0406-4b2f-bec8-9367e149cfde" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofFairvalueofInterestRateSwapsDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofFairvalueofInterestRateSwapsDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofFairvalueofInterestRateSwapsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a36040de-4fdb-4e41-93a3-b6822aa602a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_c8258fdf-cf13-4c92-9486-b0d1b264a85f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a36040de-4fdb-4e41-93a3-b6822aa602a1" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_c8258fdf-cf13-4c92-9486-b0d1b264a85f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_30259936-3cb9-4341-83c5-b722de22ab24" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_c8258fdf-cf13-4c92-9486-b0d1b264a85f" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_30259936-3cb9-4341-83c5-b722de22ab24" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_30259936-3cb9-4341-83c5-b722de22ab24_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_30259936-3cb9-4341-83c5-b722de22ab24" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_30259936-3cb9-4341-83c5-b722de22ab24_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_bc78dca3-62a1-455c-80bd-ec6a5467f869" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_30259936-3cb9-4341-83c5-b722de22ab24" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_bc78dca3-62a1-455c-80bd-ec6a5467f869" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_9259b9bb-0e99-4238-a6a7-cb1427a3e3c2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_bc78dca3-62a1-455c-80bd-ec6a5467f869" xlink:to="loc_us-gaap_InterestRateSwapMember_9259b9bb-0e99-4238-a6a7-cb1427a3e3c2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_86b72ea3-6050-4346-bcbb-fe440cf4f0bd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_c8258fdf-cf13-4c92-9486-b0d1b264a85f" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_86b72ea3-6050-4346-bcbb-fe440cf4f0bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_86b72ea3-6050-4346-bcbb-fe440cf4f0bd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_86b72ea3-6050-4346-bcbb-fe440cf4f0bd" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_86b72ea3-6050-4346-bcbb-fe440cf4f0bd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_c08ec02e-f5b4-4feb-bca9-2d8c84e006e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_86b72ea3-6050-4346-bcbb-fe440cf4f0bd" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_c08ec02e-f5b4-4feb-bca9-2d8c84e006e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_7e091c86-62a6-47d6-8957-b6c29c712a2b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_c08ec02e-f5b4-4feb-bca9-2d8c84e006e4" xlink:to="loc_us-gaap_OtherCurrentAssetsMember_7e091c86-62a6-47d6-8957-b6c29c712a2b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentAssetsMember_b0b8c335-01e3-4c6a-9e49-cdd5bafe922c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNoncurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_c08ec02e-f5b4-4feb-bca9-2d8c84e006e4" xlink:to="loc_us-gaap_OtherNoncurrentAssetsMember_b0b8c335-01e3-4c6a-9e49-cdd5bafe922c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_596750b9-cc0b-4d08-b5ca-f54c24f57d22" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_c8258fdf-cf13-4c92-9486-b0d1b264a85f" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_596750b9-cc0b-4d08-b5ca-f54c24f57d22" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_596750b9-cc0b-4d08-b5ca-f54c24f57d22_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_596750b9-cc0b-4d08-b5ca-f54c24f57d22" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_596750b9-cc0b-4d08-b5ca-f54c24f57d22_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_a5895c00-0872-415c-bd88-ca35f63c881b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_596750b9-cc0b-4d08-b5ca-f54c24f57d22" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_a5895c00-0872-415c-bd88-ca35f63c881b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgagesMember_f736346e-ce63-4ec2-acde-9a403e8eec3f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MortgagesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_a5895c00-0872-415c-bd88-ca35f63c881b" xlink:to="loc_us-gaap_MortgagesMember_f736346e-ce63-4ec2-acde-9a403e8eec3f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet_628dc703-79f3-49bd-b631-2f9ca584d09c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a36040de-4fdb-4e41-93a3-b6822aa602a1" xlink:to="loc_us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet_628dc703-79f3-49bd-b631-2f9ca584d09c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_15a042b3-8e94-4c20-89f6-dd36b7e0bace" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a36040de-4fdb-4e41-93a3-b6822aa602a1" xlink:to="loc_us-gaap_LongTermDebtFairValue_15a042b3-8e94-4c20-89f6-dd36b7e0bace" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofDerivativeInstrumentsEffectontheConsolidatedIncomeStatementIncludingAccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofDerivativeInstrumentsEffectontheConsolidatedIncomeStatementIncludingAccumulatedOtherComprehensiveIncomeDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofDerivativeInstrumentsEffectontheConsolidatedIncomeStatementIncludingAccumulatedOtherComprehensiveIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_8a2f4031-6c8c-4073-a6e9-a1c6a811a5bf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_8d17b5df-f65c-40c6-a4cb-cfc71215e9b2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_8a2f4031-6c8c-4073-a6e9-a1c6a811a5bf" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_8d17b5df-f65c-40c6-a4cb-cfc71215e9b2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_41c99a63-d43a-4381-ba37-a9e6e248a13f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_8d17b5df-f65c-40c6-a4cb-cfc71215e9b2" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_41c99a63-d43a-4381-ba37-a9e6e248a13f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_41c99a63-d43a-4381-ba37-a9e6e248a13f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_41c99a63-d43a-4381-ba37-a9e6e248a13f" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_41c99a63-d43a-4381-ba37-a9e6e248a13f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_03735446-0fa7-43b7-b15b-38f14d3d9635" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_41c99a63-d43a-4381-ba37-a9e6e248a13f" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_03735446-0fa7-43b7-b15b-38f14d3d9635" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_6f353bb0-3f3e-4a8a-8b48-074b503139ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_03735446-0fa7-43b7-b15b-38f14d3d9635" xlink:to="loc_us-gaap_InterestRateSwapMember_6f353bb0-3f3e-4a8a-8b48-074b503139ee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_6a216e37-dcdc-4b51-9bbd-0686290dd85a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_8d17b5df-f65c-40c6-a4cb-cfc71215e9b2" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_6a216e37-dcdc-4b51-9bbd-0686290dd85a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_6a216e37-dcdc-4b51-9bbd-0686290dd85a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_6a216e37-dcdc-4b51-9bbd-0686290dd85a" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_6a216e37-dcdc-4b51-9bbd-0686290dd85a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_a266236d-a124-4141-aa14-81b384e90575" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_6a216e37-dcdc-4b51-9bbd-0686290dd85a" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_a266236d-a124-4141-aa14-81b384e90575" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseMember_0e5daf9d-5386-4105-a7fc-9b3ded9b7550" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_a266236d-a124-4141-aa14-81b384e90575" xlink:to="loc_us-gaap_InterestExpenseMember_0e5daf9d-5386-4105-a7fc-9b3ded9b7550" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FloorPlanInterestExpenseandOtherInterestExpenseMember_b162525b-15dc-4417-9aef-8c72ecae9ff6" xlink:href="abg-20250630.xsd#abg_FloorPlanInterestExpenseandOtherInterestExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_a266236d-a124-4141-aa14-81b384e90575" xlink:to="loc_abg_FloorPlanInterestExpenseandOtherInterestExpenseMember_b162525b-15dc-4417-9aef-8c72ecae9ff6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_b44ae588-f0ad-473d-83e4-6bb379c2a9a2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_8a2f4031-6c8c-4073-a6e9-a1c6a811a5bf" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_b44ae588-f0ad-473d-83e4-6bb379c2a9a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet_c73c058a-8ed8-4b76-8a19-df3292b6bb54" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_8a2f4031-6c8c-4073-a6e9-a1c6a811a5bf" xlink:to="loc_us-gaap_InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet_c73c058a-8ed8-4b76-8a19-df3292b6bb54" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofInvestmentsatFairValueDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofInvestmentsatFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEScheduleofInvestmentsatFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_cee71ad3-5734-48e1-8f5a-16e251fc387a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8b4f744d-607f-4e31-b429-760cef50f5ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_cee71ad3-5734-48e1-8f5a-16e251fc387a" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8b4f744d-607f-4e31-b429-760cef50f5ee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_10d03e6d-41eb-42e3-8ac1-c5fec4bc439d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8b4f744d-607f-4e31-b429-760cef50f5ee" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_10d03e6d-41eb-42e3-8ac1-c5fec4bc439d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_10d03e6d-41eb-42e3-8ac1-c5fec4bc439d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_10d03e6d-41eb-42e3-8ac1-c5fec4bc439d" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_10d03e6d-41eb-42e3-8ac1-c5fec4bc439d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_a61d8a03-70d1-44f9-a2e4-573a003f8d29" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_10d03e6d-41eb-42e3-8ac1-c5fec4bc439d" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_a61d8a03-70d1-44f9-a2e4-573a003f8d29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_b738c7fb-6252-47f5-a964-32fcc224cb5b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_a61d8a03-70d1-44f9-a2e4-573a003f8d29" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_b738c7fb-6252-47f5-a964-32fcc224cb5b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_ac449c7b-a49e-4023-a04d-31bb74e41481" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8b4f744d-607f-4e31-b429-760cef50f5ee" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_ac449c7b-a49e-4023-a04d-31bb74e41481" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ac449c7b-a49e-4023-a04d-31bb74e41481_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_ac449c7b-a49e-4023-a04d-31bb74e41481" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ac449c7b-a49e-4023-a04d-31bb74e41481_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1333d81c-8437-4816-9f1e-08714f23c821" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_ac449c7b-a49e-4023-a04d-31bb74e41481" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1333d81c-8437-4816-9f1e-08714f23c821" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel12And3Member_98602365-7f26-40c5-b9b0-fd95e0d23f47" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel12And3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1333d81c-8437-4816-9f1e-08714f23c821" xlink:to="loc_us-gaap_FairValueInputsLevel12And3Member_98602365-7f26-40c5-b9b0-fd95e0d23f47" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_fc7279cf-31a7-42b5-a799-106eefb57d32" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_98602365-7f26-40c5-b9b0-fd95e0d23f47" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_fc7279cf-31a7-42b5-a799-106eefb57d32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_87a073d3-d2bb-453f-b208-9b4c8c22b0ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_98602365-7f26-40c5-b9b0-fd95e0d23f47" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_87a073d3-d2bb-453f-b208-9b4c8c22b0ac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_d8547006-4427-4017-aa93-93c553b6ef6d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_98602365-7f26-40c5-b9b0-fd95e0d23f47" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_d8547006-4427-4017-aa93-93c553b6ef6d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_21047c22-7f47-44a6-a749-5acb6f30617e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8b4f744d-607f-4e31-b429-760cef50f5ee" xlink:to="loc_us-gaap_InvestmentTypeAxis_21047c22-7f47-44a6-a749-5acb6f30617e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_21047c22-7f47-44a6-a749-5acb6f30617e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_21047c22-7f47-44a6-a749-5acb6f30617e" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_21047c22-7f47-44a6-a749-5acb6f30617e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_d66a908f-126a-4e22-a763-a771f7632526" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_21047c22-7f47-44a6-a749-5acb6f30617e" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_d66a908f-126a-4e22-a763-a771f7632526" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestmentsMember_76d1a28d-2bd5-4893-a04f-044b2497d7bf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShortTermInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_d66a908f-126a-4e22-a763-a771f7632526" xlink:to="loc_us-gaap_ShortTermInvestmentsMember_76d1a28d-2bd5-4893-a04f-044b2497d7bf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MunicipalBondsMember_afc65fa6-5220-41a6-a682-a794c2a4a17c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MunicipalBondsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_d66a908f-126a-4e22-a763-a771f7632526" xlink:to="loc_us-gaap_MunicipalBondsMember_afc65fa6-5220-41a6-a682-a794c2a4a17c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesMember_52e0b87d-a939-4f23-8d24-5f41962774e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_d66a908f-126a-4e22-a763-a771f7632526" xlink:to="loc_us-gaap_DebtSecuritiesMember_52e0b87d-a939-4f23-8d24-5f41962774e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_c4e1cf12-65e6-476b-b535-a452d8bddc5b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesMember_52e0b87d-a939-4f23-8d24-5f41962774e2" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_c4e1cf12-65e6-476b-b535-a452d8bddc5b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_MortgageAndOtherAssetsBackedSecuritiesMember_da03f01a-2b4c-46c6-a0b9-05f6da35f0ff" xlink:href="abg-20250630.xsd#abg_MortgageAndOtherAssetsBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_d66a908f-126a-4e22-a763-a771f7632526" xlink:to="loc_abg_MortgageAndOtherAssetsBackedSecuritiesMember_da03f01a-2b4c-46c6-a0b9-05f6da35f0ff" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_c3c11880-b8f0-4fe0-ad4d-eb6e63eb68ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_d66a908f-126a-4e22-a763-a771f7632526" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_c3c11880-b8f0-4fe0-ad4d-eb6e63eb68ac" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_3c5eb703-5a3d-49d5-aa38-fd6284d93903" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_cee71ad3-5734-48e1-8f5a-16e251fc387a" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_3c5eb703-5a3d-49d5-aa38-fd6284d93903" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsFairValueDisclosure_b03a96fb-82ff-451c-8cb5-c06756f716d9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_cee71ad3-5734-48e1-8f5a-16e251fc387a" xlink:to="loc_us-gaap_InvestmentsFairValueDisclosure_b03a96fb-82ff-451c-8cb5-c06756f716d9" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/SEGMENTINFORMATIONReconciliationofSegmentInformationtoConsolidatedInformationDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#SEGMENTINFORMATIONReconciliationofSegmentInformationtoConsolidatedInformationDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/SEGMENTINFORMATIONReconciliationofSegmentInformationtoConsolidatedInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_dc48531e-4b63-46e5-9811-16dbb9263215" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_dc48531e-4b63-46e5-9811-16dbb9263215" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_ecd86434-da3c-4228-865f-3a3af21c53f9" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_dc48531e-4b63-46e5-9811-16dbb9263215" xlink:to="loc_srt_ConsolidationItemsAxis_ecd86434-da3c-4228-865f-3a3af21c53f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_ecd86434-da3c-4228-865f-3a3af21c53f9_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_ecd86434-da3c-4228-865f-3a3af21c53f9" xlink:to="loc_srt_ConsolidationItemsDomain_ecd86434-da3c-4228-865f-3a3af21c53f9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_820e6d8e-5315-4e4a-922a-8e6a1cbad1d3" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_ecd86434-da3c-4228-865f-3a3af21c53f9" xlink:to="loc_srt_ConsolidationItemsDomain_820e6d8e-5315-4e4a-922a-8e6a1cbad1d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_c94b4386-270b-435b-a02b-76f77cec325e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_820e6d8e-5315-4e4a-922a-8e6a1cbad1d3" xlink:to="loc_us-gaap_OperatingSegmentsMember_c94b4386-270b-435b-a02b-76f77cec325e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_385f9db3-5c23-4b1a-9010-9a17b5ec881d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_820e6d8e-5315-4e4a-922a-8e6a1cbad1d3" xlink:to="loc_us-gaap_IntersegmentEliminationMember_385f9db3-5c23-4b1a-9010-9a17b5ec881d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_b143dfcb-2c31-42d3-9082-d458bfa26264" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_dc48531e-4b63-46e5-9811-16dbb9263215" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_b143dfcb-2c31-42d3-9082-d458bfa26264" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_b143dfcb-2c31-42d3-9082-d458bfa26264_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_b143dfcb-2c31-42d3-9082-d458bfa26264" xlink:to="loc_us-gaap_SegmentDomain_b143dfcb-2c31-42d3-9082-d458bfa26264_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_a973ebc7-3af7-4c75-a333-e0267c5e3874" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_b143dfcb-2c31-42d3-9082-d458bfa26264" xlink:to="loc_us-gaap_SegmentDomain_a973ebc7-3af7-4c75-a333-e0267c5e3874" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DealershipsMember_59537a98-0853-4691-9c99-e5a3c5c73649" xlink:href="abg-20250630.xsd#abg_DealershipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a973ebc7-3af7-4c75-a333-e0267c5e3874" xlink:to="loc_abg_DealershipsMember_59537a98-0853-4691-9c99-e5a3c5c73649" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_TCAMember_59064bd9-cb3d-4ecf-89fd-c999006df0be" xlink:href="abg-20250630.xsd#abg_TCAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a973ebc7-3af7-4c75-a333-e0267c5e3874" xlink:to="loc_abg_TCAMember_59064bd9-cb3d-4ecf-89fd-c999006df0be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_8cb13fde-223b-43d3-a1b8-7aa70fd68eec" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_dc48531e-4b63-46e5-9811-16dbb9263215" xlink:to="loc_srt_ProductOrServiceAxis_8cb13fde-223b-43d3-a1b8-7aa70fd68eec" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_8cb13fde-223b-43d3-a1b8-7aa70fd68eec_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_8cb13fde-223b-43d3-a1b8-7aa70fd68eec" xlink:to="loc_srt_ProductsAndServicesDomain_8cb13fde-223b-43d3-a1b8-7aa70fd68eec_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_5cfb7045-dee3-4af7-a24d-5294578f2ec2" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_8cb13fde-223b-43d3-a1b8-7aa70fd68eec" xlink:to="loc_srt_ProductsAndServicesDomain_5cfb7045-dee3-4af7-a24d-5294578f2ec2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_NewVehicleMember_3b7a6c27-90f0-48b5-b9bf-195dd0afb814" xlink:href="abg-20250630.xsd#abg_NewVehicleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5cfb7045-dee3-4af7-a24d-5294578f2ec2" xlink:to="loc_abg_NewVehicleMember_3b7a6c27-90f0-48b5-b9bf-195dd0afb814" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_UsedVehicleMember_b5238bf3-f2ec-41aa-93b4-1287aef3237d" xlink:href="abg-20250630.xsd#abg_UsedVehicleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5cfb7045-dee3-4af7-a24d-5294578f2ec2" xlink:to="loc_abg_UsedVehicleMember_b5238bf3-f2ec-41aa-93b4-1287aef3237d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_PartsAndServiceMember_7eec3ed2-6cfd-48f4-bdb2-5a09ca983281" xlink:href="abg-20250630.xsd#abg_PartsAndServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5cfb7045-dee3-4af7-a24d-5294578f2ec2" xlink:to="loc_abg_PartsAndServiceMember_7eec3ed2-6cfd-48f4-bdb2-5a09ca983281" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FinanceAndInsuranceNetMember_0264e6f2-4430-4f9d-b485-c6ca3772b66d" xlink:href="abg-20250630.xsd#abg_FinanceAndInsuranceNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_5cfb7045-dee3-4af7-a24d-5294578f2ec2" xlink:to="loc_abg_FinanceAndInsuranceNetMember_0264e6f2-4430-4f9d-b485-c6ca3772b66d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_9ca0995c-9e69-4595-b929-f65c9d6cada1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_Revenues_9ca0995c-9e69-4595-b929-f65c9d6cada1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_739a3ccd-2069-451a-8351-da0c37e70517" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_CostOfRevenue_739a3ccd-2069-451a-8351-da0c37e70517" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_097eb90c-20ea-4ee0-b24b-d668777bb368" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_LaborAndRelatedExpense_097eb90c-20ea-4ee0-b24b-d668777bb368" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_RentAndRelatedExpenses_14ff1597-4aab-4718-9aa4-9175799f317f" xlink:href="abg-20250630.xsd#abg_RentAndRelatedExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_abg_RentAndRelatedExpenses_14ff1597-4aab-4718-9aa4-9175799f317f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvertisingExpense_57267217-cddb-4850-88e0-53093cf22dff" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdvertisingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_AdvertisingExpense_57267217-cddb-4850-88e0-53093cf22dff" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSellingGeneralAndAdministrativeExpense_0513dbd7-604a-4210-86b4-e3202ad9ba3a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherSellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_OtherSellingGeneralAndAdministrativeExpense_0513dbd7-604a-4210-86b4-e3202ad9ba3a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_c383f06f-030e-49fb-92af-25a75aea1eb0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_c383f06f-030e-49fb-92af-25a75aea1eb0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_8ee51075-92bc-459e-8230-ac19bf0bc961" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_8ee51075-92bc-459e-8230-ac19bf0bc961" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_FloorPlanInterestExpense_580a2a7a-2451-4041-8876-a7bc2a6c8a48" xlink:href="abg-20250630.xsd#abg_FloorPlanInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_abg_FloorPlanInterestExpense_580a2a7a-2451-4041-8876-a7bc2a6c8a48" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_545fba93-5b81-4e3d-8dc3-b08e45ad2d9b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_OperatingIncomeLoss_545fba93-5b81-4e3d-8dc3-b08e45ad2d9b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DeferralOfSellingGeneralAndAdministrativeExpenses_27358420-5730-4b4b-92f1-ac1ba43112f8" xlink:href="abg-20250630.xsd#abg_DeferralOfSellingGeneralAndAdministrativeExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_abg_DeferralOfSellingGeneralAndAdministrativeExpenses_27358420-5730-4b4b-92f1-ac1ba43112f8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_77dcfbfe-4d90-4f6b-a12e-c39d7a486073" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_AssetImpairmentCharges_77dcfbfe-4d90-4f6b-a12e-c39d7a486073" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOther_695ff978-b90c-4e8d-9ce6-63d00bd362bc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_InterestExpenseOther_695ff978-b90c-4e8d-9ce6-63d00bd362bc" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_117c0770-f2da-4b76-ac51-cdc21985b992" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_117c0770-f2da-4b76-ac51-cdc21985b992" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_da80029d-f123-42f0-b020-5b5ccd22348b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e764ac9e-8c09-49d4-b5dd-26d11e50751d" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_da80029d-f123-42f0-b020-5b5ccd22348b" xlink:type="arc" order="14"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/SEGMENTINFORMATIONSegmentInformationDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#SEGMENTINFORMATIONSegmentInformationDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/SEGMENTINFORMATIONSegmentInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_15df0c03-d3c5-4c7a-a2bc-122517e06ebd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_014d9e44-b9ce-4b4d-9e2c-04e42186f6ad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_15df0c03-d3c5-4c7a-a2bc-122517e06ebd" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_014d9e44-b9ce-4b4d-9e2c-04e42186f6ad" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_ea0046f4-bded-44ac-9ac5-a15e15019d15" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_014d9e44-b9ce-4b4d-9e2c-04e42186f6ad" xlink:to="loc_srt_ConsolidationItemsAxis_ea0046f4-bded-44ac-9ac5-a15e15019d15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_ea0046f4-bded-44ac-9ac5-a15e15019d15_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_ea0046f4-bded-44ac-9ac5-a15e15019d15" xlink:to="loc_srt_ConsolidationItemsDomain_ea0046f4-bded-44ac-9ac5-a15e15019d15_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_7f9966d8-1f1a-43c9-91ce-c2488083ff9a" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_ea0046f4-bded-44ac-9ac5-a15e15019d15" xlink:to="loc_srt_ConsolidationItemsDomain_7f9966d8-1f1a-43c9-91ce-c2488083ff9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_341e7206-7121-42ca-96c7-5e9c40916193" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_7f9966d8-1f1a-43c9-91ce-c2488083ff9a" xlink:to="loc_us-gaap_OperatingSegmentsMember_341e7206-7121-42ca-96c7-5e9c40916193" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_0ff8e407-ea23-482c-9bd7-5e65625a64d1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_7f9966d8-1f1a-43c9-91ce-c2488083ff9a" xlink:to="loc_us-gaap_IntersegmentEliminationMember_0ff8e407-ea23-482c-9bd7-5e65625a64d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_7f3a7de9-9e8f-46a2-92e2-493f163bb566" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_014d9e44-b9ce-4b4d-9e2c-04e42186f6ad" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_7f3a7de9-9e8f-46a2-92e2-493f163bb566" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_7f3a7de9-9e8f-46a2-92e2-493f163bb566_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7f3a7de9-9e8f-46a2-92e2-493f163bb566" xlink:to="loc_us-gaap_SegmentDomain_7f3a7de9-9e8f-46a2-92e2-493f163bb566_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_c7c5386e-2e11-4849-b172-c1fc26d04a6b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7f3a7de9-9e8f-46a2-92e2-493f163bb566" xlink:to="loc_us-gaap_SegmentDomain_c7c5386e-2e11-4849-b172-c1fc26d04a6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_DealershipsMember_01087c40-3d3d-4ce7-9501-e6e4cfe769a6" xlink:href="abg-20250630.xsd#abg_DealershipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_c7c5386e-2e11-4849-b172-c1fc26d04a6b" xlink:to="loc_abg_DealershipsMember_01087c40-3d3d-4ce7-9501-e6e4cfe769a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_TCAMember_f8e5b696-48df-40dd-90ec-658285847f54" xlink:href="abg-20250630.xsd#abg_TCAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_c7c5386e-2e11-4849-b172-c1fc26d04a6b" xlink:to="loc_abg_TCAMember_f8e5b696-48df-40dd-90ec-658285847f54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_20c0f52b-4931-4481-906d-8f12be265dec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_15df0c03-d3c5-4c7a-a2bc-122517e06ebd" xlink:to="loc_us-gaap_Assets_20c0f52b-4931-4481-906d-8f12be265dec" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.asburyauto.com/role/COMMITMENTSANDCONTINGENCIESDetails" xlink:type="simple" xlink:href="abg-20250630.xsd#COMMITMENTSANDCONTINGENCIESDetails"/>
  <link:definitionLink xlink:role="http://www.asburyauto.com/role/COMMITMENTSANDCONTINGENCIESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_cef26954-552a-47a9-beec-eff51f80d000" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_d417e6a0-2a4d-4ed5-aaf9-5414f2b1e6ba" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_cef26954-552a-47a9-beec-eff51f80d000" xlink:to="loc_us-gaap_LossContingenciesTable_d417e6a0-2a4d-4ed5-aaf9-5414f2b1e6ba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_fd4e4c04-144e-4343-86a0-ecf51730ab0a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_d417e6a0-2a4d-4ed5-aaf9-5414f2b1e6ba" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_fd4e4c04-144e-4343-86a0-ecf51730ab0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_fd4e4c04-144e-4343-86a0-ecf51730ab0a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_fd4e4c04-144e-4343-86a0-ecf51730ab0a" xlink:to="loc_us-gaap_LossContingencyNatureDomain_fd4e4c04-144e-4343-86a0-ecf51730ab0a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_69161d63-36e3-48d7-8c16-a6c3e3afea62" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_fd4e4c04-144e-4343-86a0-ecf51730ab0a" xlink:to="loc_us-gaap_LossContingencyNatureDomain_69161d63-36e3-48d7-8c16-a6c3e3afea62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMember_b461470e-6b2c-44e9-9a66-22ac60269df4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GuaranteeObligationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_69161d63-36e3-48d7-8c16-a6c3e3afea62" xlink:to="loc_us-gaap_GuaranteeObligationsMember_b461470e-6b2c-44e9-9a66-22ac60269df4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_30e6ddd1-79f9-46c2-b05e-a0e6551a62e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_d417e6a0-2a4d-4ed5-aaf9-5414f2b1e6ba" xlink:to="loc_us-gaap_CreditFacilityAxis_30e6ddd1-79f9-46c2-b05e-a0e6551a62e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_30e6ddd1-79f9-46c2-b05e-a0e6551a62e4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_30e6ddd1-79f9-46c2-b05e-a0e6551a62e4" xlink:to="loc_us-gaap_CreditFacilityDomain_30e6ddd1-79f9-46c2-b05e-a0e6551a62e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_19852265-0c08-4b60-9e4f-e7735f16c085" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_30e6ddd1-79f9-46c2-b05e-a0e6551a62e4" xlink:to="loc_us-gaap_CreditFacilityDomain_19852265-0c08-4b60-9e4f-e7735f16c085" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_ReastatedCreditAgreementMember_45e0be99-8083-4db4-855b-b214be3fa644" xlink:href="abg-20250630.xsd#abg_ReastatedCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_19852265-0c08-4b60-9e4f-e7735f16c085" xlink:to="loc_abg_ReastatedCreditAgreementMember_45e0be99-8083-4db4-855b-b214be3fa644" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityAxis_f8f6f31f-a427-425d-847a-40fda400d860" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_d417e6a0-2a4d-4ed5-aaf9-5414f2b1e6ba" xlink:to="loc_us-gaap_LineOfCreditFacilityAxis_f8f6f31f-a427-425d-847a-40fda400d860" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_f8f6f31f-a427-425d-847a-40fda400d860_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_f8f6f31f-a427-425d-847a-40fda400d860" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_f8f6f31f-a427-425d-847a-40fda400d860_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_4408fb96-679f-404d-b789-d3c7250aee21" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_f8f6f31f-a427-425d-847a-40fda400d860" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_4408fb96-679f-404d-b789-d3c7250aee21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_BankOfAmericaNAMember_36c8b094-6d98-4a91-a124-f812f3c54b69" xlink:href="abg-20250630.xsd#abg_BankOfAmericaNAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_4408fb96-679f-404d-b789-d3c7250aee21" xlink:to="loc_abg_BankOfAmericaNAMember_36c8b094-6d98-4a91-a124-f812f3c54b69" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_LossContingencyNumberOfDealershipsUnderInvestigation_033ee72e-cdc1-41fc-836f-42406361a683" xlink:href="abg-20250630.xsd#abg_LossContingencyNumberOfDealershipsUnderInvestigation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_cef26954-552a-47a9-beec-eff51f80d000" xlink:to="loc_abg_LossContingencyNumberOfDealershipsUnderInvestigation_033ee72e-cdc1-41fc-836f-42406361a683" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_LossContingencyDealershipsThatViolatedFTCActNumber_e10a2932-f760-40b9-ae23-14a1a1fdc5c1" xlink:href="abg-20250630.xsd#abg_LossContingencyDealershipsThatViolatedFTCActNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_cef26954-552a-47a9-beec-eff51f80d000" xlink:to="loc_abg_LossContingencyDealershipsThatViolatedFTCActNumber_e10a2932-f760-40b9-ae23-14a1a1fdc5c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_a7ee7efb-b70c-4837-8f1b-789cc868bd04" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_cef26954-552a-47a9-beec-eff51f80d000" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_a7ee7efb-b70c-4837-8f1b-789cc868bd04" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_abg_AmountOfSuretyBondLineMaintained_a3c43df9-b345-4e1b-b9c4-c8f783ae51af" xlink:href="abg-20250630.xsd#abg_AmountOfSuretyBondLineMaintained"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_cef26954-552a-47a9-beec-eff51f80d000" xlink:to="loc_abg_AmountOfSuretyBondLineMaintained_a3c43df9-b345-4e1b-b9c4-c8f783ae51af" xlink:type="arc" order="3"/>
  </link:definitionLink>
</link:linkbase>
