
For the quarterly period endedJune 30, 2025or ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period fromCommission File Number:1-13461 Group 1 Automotive, Inc. (State of other jurisdiction of incorporation or organization)730 Town and Country Blvd.,Suite 500Houston,TX (Address of principal executive offices) (713)647-5700(Registrant’s telephone number, including area code)Not Applicable(Former name, former address and former fiscal year, if changed since last report)Securities registered pursuant to Section 12(b) of the Act:Title of each classTicker symbol(s)Name of exchange on which registeredCommon stock, par value $0.01 per shareGPINew York Stock ExchangeIndicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the Securities Exchange Act of1934 during the preceding 12months (or for such shorter period that the registrant was required to file such reports) and (2)has been subject to such filing company” in Rule 12b-2 of the Exchange Act. (Check one):Large accelerated filerþ¨AcceleratedfilerNon-accelerated filer¨☐Smallerreportingcompany ☐ new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.¨Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Exchange Act).Yes☐Noþ Other InformationExhibits SIGNATURE 1 and operations of Group 1 Automotive, Inc. and its subsidiaries.This Quarterly Report on Form 10-Q (this “Form 10-Q”) includes certain “forward-looking statements” within the meaning of thePrivate Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section Unrealized loss (gain) on derivative instruments InventoriesContracts-in-transit and vehicle receivables Prepaid expenses and other assets Floorplan notes payable—manufacturer affiliates(32.7)Deferred revenues(0.3)Operating lease liabilities(14.6)Net cash provided by operating activities410.3CASH FLOWS FROM INVESTING ACTIVITIES:Cash paid for acquisitions, net, including repayment of sellers’ floorplan notes payable of $26.8and (0.1)Net cash used in investing activities(371.3)CASH FLOWS FROM FINANCING ACTIVITIES: Repayments on credit facility—floorplan line and other(7,134.4)Borrowings on credit facility—acquisition line999.9Repayments on credit facility—acquisition line(684.6)Debt issuance costs(7.0) Proceeds from employee stock purchase planPayments of tax withholding for stock-based compensation (10.0)Repurchases of common stock, amounts based on settlement date(167.3)Dividends paid(13.1)Net cash (used in) provided by financing activities(27.2)Effect of exchange rate changes on cash6.4Net increase in cash and cash equivalents18.3CASH AND CASH EQUIVALENTS, beginning of period34.4 1.BASIS OF PRESENTATION AND CONSOLIDATION AND ACCOUNTING POLICIESBasis of Presentation and ConsolidationThe accompanying Condensed Consolidated Financial Statements and notes thereto, have been prepared in accordance with U.S. interim periods are not necessarily indicative of the results that can be expected for a full year and therefore should be read in conjunctionwith the Company’s audited Financial Statements and notes thereto included within the Company’s 2024 Form 10-K. All intercompanybalances and transactions have been eliminated in consolidation. The accompanying Condensed Consolidated Financial Statements reflectthe consolidated accounts of the parent company, Group 1 Automotive, Inc. and its subsidiaries, all of which are wholly owned. Certain amounts in the Condensed Consolidated Financial Statements and the accompanying notes may not compute due to rounding.All computations have been calculated using unrounded amounts for all periods presented. These Condensed Consolidated Financial Use of Estimates The preparation of the Company’s financial statements in conformity with U.S. GAAP requires management to make certain estimatesand assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities, the disclosures of contingent assets The following tables present the Company’s revenues disaggregated by its geographical segments (in millions): Three Months Ended June 30, 2025Six Months Ended June 30, 2025U.S.U.K.TotalU.S.U.K. Used vehicle retail salesUsed vehicle wholesale sales 86.577.3163.8178.5136.9Total new and used vehicle sales3,422.71,324.84,747.46,627.72,706.7Parts and service sales555.5162.8718.41,086.8323.7(1) Three Months Ended June 30, 2024Six Months Ended June 30, 2024U.S.U.K.TotalU.S.U.K.New vehicle retail sales$2,009.5$354.6$2,364.2$3,809.4$737.4 Finance, insurance and other, net Total revenues$3,921.2$775.2$4,696.4 The Company has elected not to disclose revenues related to remaining performance obligations on its maintenance and repair services as the duration ofthese contracts is less than one year. 2025 (i