#1de PARTS & SERVICE ONLINE SHOPPING GPI LISTED NYSE 1 GROUP 1 AUTOMOTIVE® 4Q23 & FY23 Financial Results Investor Presentation January 31, 2024 A + x BUY & SELL FINANCE & INSURANCE CUSTOMER SUPPORT AcceleRide BUY. SELL. BE HAPPY.#2Forward-Looking Statements. GROUP 1 AUTOMOTIVE® This presentation contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, which are statements related to future, not past, events and are based on our current expectations and assumptions regarding our business, the economy and other future conditions. In this context, the forward-looking statements often include statements regarding our strategic investments, goals, plans, projections and guidance regarding our financial position, results of operations and business strategy, including the annualized revenues of recently completed acquisitions or dispositions and other benefits of such currently anticipated or recently completed acquisitions or dispositions. These forward-looking statements often contain words such as "expects," "anticipates," "intends," "plans," "believes," "seeks," "should," "foresee," "may" or "will" and similar expressions. While management believes that these forward-looking statements are reasonable as and when made, there can be no assurance that future developments affecting us will be those that we anticipate. Any such forward-looking statements are not assurances of future performance and involve risks and uncertainties that may cause actual results to differ materially from those set forth in the statements. These risks and uncertainties include, among other things, (a) general economic and business conditions, (b) the level of manufacturer incentives, (c) the future regulatory environment, (d) our ability to obtain an inventory of desirable new and used vehicles, (e) our relationship with our automobile manufacturers and the willingness of manufacturers to approve future acquisitions, (f) our cost of financing and the availability of credit for consumers, (g) our ability to complete acquisitions and dispositions on a timely basis, if at all, and the risks associated therewith, (h) foreign exchange controls and currency fluctuations, (i) the armed conflicts in Ukraine and the Middle East, (j) the impacts of any potential global recession, (k) our ability to maintain sufficient liquidity to operate, and (1) our ability to successfully integrate recent and future acquisitions. For additional information regarding known material factors that could cause our actual results to differ from our projected results, please see our filings with the Securities and Exchange Commission, including our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date hereof. We undertake no obligation to publicly update or revise any forward-looking statements after the date they are made, whether as a result of new information, future events or otherwise. Page 2#3The Group 1 Way CONSISTENT PROFITABILITY & STRONG CASH FLOW ■ Continued strong EPS: 42% CAGR over five year period ■ Significant free cash flow generation. Adjusted free cash flows of $803 million generated in 2022 and $580 million in 2023(1) AMERICA'S LARGEST CORPORATIONS FORTUNE 500 2023 #252 PORTFOLIO OPTIMIZATION Balanced M&A, share repurchases, and dividends ■ $4.5 billion in acquired revenues since the beginning of 2021 ■ Strategic disposition strategy ◉ Repurchased ~4.9 million shares since the beginning of 2021 representing 27% of our share count ■ No controlling shareholder to impact decision-making ■ Low rent-adjusted leverage of 2.1x, as of December 31, 2023- allow flexibility for M&A PARTS & SERVICE GROWTH OUTPERFORMANCE ■ Consistent outperformance of the peer group's average same store growth rate over the past several years ■ Numerous initiatives have driven this consistent outperformance: " 4-day work week is a differentiator when recruiting service techs - same store tech headcount increased 6% versus December 2022 Digital applications have driven a 38% penetration in online appointment making EMPLOYER OF CHOICE WITHIN THE AUTO INDUSTRY Our employees are the cornerstone to our operations and business success ■ We seek to be the employer of choice by focusing on: REVENUE*($MM) ■ Talent management and employee engagement ■ Training and development " • Fostering DEI Promoting employee safety and well-being 1 Competitive pay and benefits LEADING CUSTOMER EXPERIENCE & PARTNER OF CHOICE #1 ranked call center provides outstanding customer service(2) ■ AcceleRide®, our state-of-the-art omni- channel platform, is driving retention and efficiencies ■ Continued focus on technology advances in robotic automation and Al ■ Strive to be great partners to our customers, employees, vendors, OEM partners, philanthropic partners and the communities in which we do business ■ Maintaining credible and ethical business practices by committing to the pursuit of excellence ADJ. FCF*(1) (SMM) ADJ. EPS*(1) 2023 $17,874 2022 $16,412 $44.24 $45.85 $581 $803 2021 $13,802 $35.02 $656 2020 $10,852 $18.06 $426 2019 +10% CAGR $10.93 +42% CAGR +25% CAGR $12,044 $237 *Based on consolidated results; includes Brazil discontinued operations (1) See appendix in this presentation for the reconciliation of Non-GAAP measures (2) Based on the 2023 PSI Service Telephone Effectiveness Study Group1Auto.com - Investor Presentation Page 3#4Diversified Geographic Footprint Sacramento (2) United States 17 States 144 Dealerships 81% of New Vehicle Unit Sales* Kansas City (3) Charlotte (1) Maine (4) New Hampshire (5) Boston Metro (19) Worldwide* 199 Dealerships 267 Franchises 41 Collision Centers 35 Brands NYC Metro (4) Philadelphia (1) Atlantic City (2) Annapolis (2) Columbia (1) Hilton Head (1) United Kingdom England 55 Dealerships London 19% of New Vehicle Unit Sales* 90000 Los Angeles (3) Santa Fe (3) Albuquerque (4) Amarillo (1) Tulsa (4) Oklahoma City (9) Atlanta (2) Augusta (1) San Diego (1) Columbus (4) Lubbock (6) Dallas-Ft Worth (8) Mobile (1) Shreveport (2) Pensacola/Panama City (3) El Paso (6) Austin (7) Beaumont (6) Gulfport (1) New Orleans (2) San Antonio (4) Houston (18) Fort Myers (1) Miami (1) Corpus Christi (1) *As of January 31, 2024; Sales based on YTD results as of December 31, 2023. Group1Auto.com - Investor Presentation Page 4#5Exposure to Strong Economic Growth Group 1 will continue to benefit from Texas's sustained economic growth Texas continues to be the fastest growing state in the U.S.1 Texas is the leading destination for companies relocating from other states.2 Texas is the #1 U.S. Exporter for 21 years in a row.2 FORTUNE Texas leads all other states with 55 of 500 2023's Fortune 500 headquarters.3 #1 GROUP 1 AUTOMOTIVE® is the Auto #1 Retailer in Texas 39% of GPI's 4Q23 NV unit sales ¹https://gov.texas.gov/business/page/workforce 2https://gov.texas.gov/uploads/images/business/TXbytheNumbers.png ³https//gov.texas.gov/news/post/texas-again-leads-nation-with-most-fortune-500-headquarters Group1Auto.com - Investor Presentation Page 5#6Business Diversification Parts & Service business provides stability in economic cycles Parts & Service is the heart of Group 1's 40% business model and generates of total gross profit Revenue* Gross Profit* 4% 12% 25% ■Finance & Insurance 2023 Fixed Absorption 110%* 34% Parts & Service 40% Used Vehicles Parts & Service is a hedge to economic cycles. ■New Vehicles Historically declined around mid-single digits during a recession, which provides stability to help offset the cyclical nature of new vehicle sales. 10% 49% 25% *May not add to 100% due to rounding; based on 2023 full-year results;. ** Fixed absorption calculation: parts & service gross profit divided by total company fixed costs plus parts & service selling expenses Group1Auto.com - Investor Presentation Page 6#7Brand Diversification Brand diversity reduces risk from evolving consumer preferences New Vehicle Brand Mix 2023 20% 12% 8% Revenue Mix Unit Mix 23% 20% 34% 35% 45% 43% ■ Import ■Luxury ■ Domestic ■Import ■Luxury ■ Domestic 9% 8% 6% 6% 6% 5% 4% 4% 4% 3% 2% 2% 2% <1% PORECHE Other M W CM GM — MINI E Ford LINCOLN *Based on units sold; may not add to 100% due to rounding Group1Auto.com - Investor Presentation KIA smart (SPRINTER CHRYSLER Jeep DODGE NISSAN JAGUAR LAND- ROVER Page 7#8Transformational Growth Strategy Portfolio Optimization Key focus is growing the company through acquisitions and returning capital to shareholders $4.5B in acquired revenues since the beginning of 2021 Strategic disposition strategy Fragmented U.S. market - top 10 dealer groups sell 10% of industry units Repurchased 4.9 million shares or 27% of our share count since the beginning of 2021 Parts & Service Used Vehicles Heart of the business model which historically contributes more than 40% of gross profit Driving growth through innovation - 4-day work week, centralized call center, digital service scheduling initiatives Increasing vehicle complexity (including electric vehicles) continues to favor franchised dealers Acquisitions average several percentage points of higher growth versus the company average as we move new dealerships onto our operating processes Typical U.S. market of ~40M units presents significant growth opportunity for GPI Fragmented market with franchised dealers having ~35% market penetration FY23 GPI U.S. same store used unit sales increased 4% YoY as compared to a flat U.S. Market Franchised dealers have supply advantage through NV trade-ins, lease returns, OEM closed auctions, and service lane marketing Leading Customer Experience #1 ranked call center provides outstanding customer service* Best in class online service scheduling utilization - 38% penetration AcceleRideⓇ, our state-of-the-art omni channel platform, is driving retention and efficiencies Ongoing focus on technology advances in robotic automation and Al *Based on the 2023 PSI Service Telephone Effectiveness Study Group1Auto.com - Investor Presentation Page 8#9Portfolio Optimization 2019-20 2021 2022 2023 M&A Acquisitions: $430M (15 franchises) Dispositions: $300M Capex: $172M $1.69 Acquisitions: $2.5B (58 franchises) Dispositions: $155M Capex: $100M Acquisitions: $940M (11 franchises) Dispositions: $265M(1) Capex: $113M Acquisitions $1.1B (9 franchises) Dispositions: $420M Capex: $139M Dividends Cash paid per share Buybacks Share Reduction: =5% Shares Repurchased: 0.9M shares at avg. price of $92.98 for total of $82M $1.33 Share Reduction: =6% Shares Repurchased: 1.1M shares at avg. price of $190.82 for total of $211M $1.50 Share Reduction: ≈18% Shares Repurchased: 3.0M shares at avg. price of $172.54 for total of $521M $1.80 Share Reduction: ≈5% Shares Repurchased: 0.7M shares at avg. price of $236.78 for total of $173M (1) Excludes Brazil disposition Group1Auto.com - Investor Presentation Page 9#10Parts & Service Overview Stability of free cash flow through economic cycles. Above sector-average growth through our strategic emphasis on customer service FY23 U.S. SS P&S Sales +8.3% YoY Service-to Service Retention by Model Year* 61% 79% 77% 73% 73% 71% 69% 67% 65% 62% 56% 69% 2023 2022 2021 2020 2019 Represents vehicles having 2 service visits in 15 months. 2018 2017 2016 2015 2014 10+ Average Years Attractive benefits including a 4-day work week for service departments Increasing vehicle complexity favors franchised dealers Easy online booking, status and access for customers via dealership apps; #1 ranked call center (2) Improved efficiencies and closing rates through customer management software (CMS) and technology Consolidated P&S Revenue (1) ($MM) +10% 2019-2023 CAGR Increased retention by targeting points of defection and enhancing customer touch points; ~69% service to service retention 2023 Acquisitions average several percentage points of higher growth versus the company average as we move new dealerships onto our operating processes 2022 6% growth in 2023 same store technician headcount YoY (1) Includes Brazil discontinued operations (2) Based on the 2023 PSI Service Telephone Effectiveness Study (3) May not add to 100% due to rounding; based on FY 2023 results Group1Auto.com - Investor Presentation 2021 $1,630 2020 $1,389 2019 $1,510 Consolidated P&S Revenue Mix (3) U.S. SS P&S FY23 YoY Change 21% 11% $2,222 16% $2,033 ■ Customer Pay ■ Warranty +11% Customer Pay +6% Warranty 53% +5% Wholesale +5% Collision ■ Wholesale ■ Collision (incl. parts) Page 10#11Battery Electric Vehicle Parts and Service Outlook Our dealerships are equipped to service all powertrain types $ Group 1 is investing in the tooling & technician training for all brands We are adding EV lifts, battery replace & repair tools, and charging stations where needed We are equipping collision centers in metro areas to repair all types of EVs, including electric delivery vans Multiple collision centers have been recognized for EV repair for several years Group1Auto.com - Investor Presentation Page 11#12Battery Electric Vehicle Parts and Service Outlook Our dealerships are equipped to service all powertrain types According to Edmunds.com 5-year repair and maintenance cost of ownership 000 Group 1's analysis shows that we generate more revenue per repair order for vehicles with alternative powertrains. 2023 Audi 2023 Audi e-tron (EV) $8,554 VS. Q5 (ICE) $8,478 BEVS still require repairs and maintenance, despite not needing some common low-margin maintenance services such as oil changes. As vehicle complexity continues to increase, it becomes more difficult for do-it-yourself and independent service shops to compete against franchised dealers who have the capital, special tools, training, and software access to make more complicated repairs. Group1Auto.com - Investor Presentation Page 12#13AcceleRide Digital Platform Summary Buy A Ride Inventory selection of new, used, and CPO provides identical user experience Digital credit applications with automatic processing through credit bureaus, OFAC, and checked within minutes Integration of customer and dealer management systems to process a deal within AcceleRide Delivery anywhere in the country or FREE local delivery or pickup Integrated vehicle trades Customers land into AcceleRide from 3rd party sites Ability to transition from online to in-person shopping creates significant employee efficiencies Seamless online payment processing Online e-signature functionality Sell A Ride Instant cash offer Offer valid for 7 days or 250 miles Home pick-up available Electronic Zelle payment made within one hour Service A Ride Intuitive online scheduling interface Select state & preferred dealership Option to reserve a loaner vehicle Collision center scheduling also available 38% of service appointments are now made online, eliminating significant company cost Group1Auto.com - Investor Presentation AcceleRide BUY. SELL. BE HAPPY. AcceleRide drives customer loyalty, retention, and employee efficiencies AcceleRide BUY SELL BE HAPPY. BUY. SELL. BE HAPPY. Smiles for miles. Buy or Sell your ride completely online and be happy. BUY A RIDE SELL A RIDE SERVICE A RIDE FINANCE A RIDE What is AcceleRide® ? Page 13#14Used Vehicle Overview Total Used Vehicle Revenues ($MM)* +13% 2019-2023 CAGR Retail Wholesale U.S. Used Market Size¹ (MM) Annual Used Vehicle Units 40 40 38 2023 6,135 2022 6,092 2021 4,874 2020 3,414 2019 3,722 *Includes Brazil discontinued operations Group1Auto.com - Investor Presentation 39 39 41 37 36 36 2015 2016 2017 2018 2019 2020 2021 2022 2023 1Source: Edmunds and Cox Automotive GPI Outperforms the Used Vehicle Industry FY23 GPI U.S. Same Store Unit Sales: +4% YoY FY23 U.S. Used Market Unit Sales: Flat YoY U.S. Market Share² 30% 35% 35% ■New Vehicle Dealers ■Used Vehicle Dealers ■Private Party 2Source: NADA-U.S. 2023 Used Vehicle Data Page 14#15Finance & Insurance Overview Improved F&I profitability via focus on compliance & growth includes: Consolidation of lender base U.S. F&I Gross Profit Per Retail Unit (PRU) Integration of compliance, training and benchmarking to offer a consistent and transparent experience for internal and external customers Consistent product penetration through 2023 Our U.S. 4Q23 online F&I PRU compared to U.S. total F&I PRU Group1Auto.com - Investor Presentation +$200 4Q23 U.S. Same Store F&I GP PRU: 4Q23 flat vs 3Q23 $2,428 $2,338 $2,155 $1,951 $1,782 $1,599 $1,647 $1,710 2016 2017 2018 2019 2020 2021 2022 2023 U.S. F&I Penetration & Gross Profit PRU 2019 2020 2021 2022 2023 Finance 72% 73% 73% 70% 68% VSC 42% 44% 45% 45% 44% Maintenance 14% 14% 15% 18% % 19% Other 17% 17% 20% 22% 21% Gross Profit $1,782 $1,951 $2,155 $2,428 $2,338 Page 15#16Structurally Lower SG&A % of GP We continue to fully leverage our scale and cost structure 940 Basis Point Improvement vs 2019 64.2% 23FY Total Adjusted SG&A % of GP* 73.6% 19FY Total Adjusted SG&A % of GP* 4.2% Technology drives customer and employee 2.7% 6.1% efficiencies 5.1% 16.0% Salesperson productivity Advertising 13.7% improvement compared to 2019 >30% Rent & Facility Other Personnel 2023 SS headcount reduction compared to 2019 >8% (Excludes increase in service technicians) Variable cost structure allows management to quickly adjust to changes in macroeconomic environment *See appendix in this presentation for the reconciliation of Non-GAAP measures Group1Auto.com - Investor Presentation 47.3% 42.7% 2023 2019 Page 16#17Debt & Interest Rate Exposure Group 1's total debt including floorplan was $3.7B: ~$1,565 million of floorplan debt ~$750 million of mortgage debt ~$750 million of bond debt ~ $325 million of acquisition line debt ~$280 million of other debt including finance leases ~60% of this debt is fixed rate when considering our swaps A 100 bp increase in rates would only decrease annual EPS by ~$0.80 at current debt levels ~60% fixed rate debt including floorplan $1,000M Debt Maturities excludes floorplan $750M $500M $250M $OM ....l. 8707 6707 2004 2005 2006 2007 2008 2009 2000 Floorplan Swap Layers in millions 2031 Thereafter Our U.S. credit facility (amended in 2022) is held by 14 commercial banks and 6 OEM partner banks and matures in 2027 No significant maturities due until 2027 Group1Auto.com - Investor Presentation 2024 2025 2026 2027 2028 2029 2030 2031 Swap Balance $525 $525 $450 $300 $250 $200 $200 $100 Fixed Rate 1.32% 1.41% 1.24% 1.12% 1.11% 1.21% 1.21% 0.67% Page 17#18Real Estate Strategy Dealership Property Breakdown by Region (as of December 31, 2023) Dealerships GPI is shifting toward owning more real estate: Region Owned Leased United States 108 36 United Kingdom 26 29 Total 134 65 Control of dealership real estate is a strong strategic asset Ownership means better flexibility and lower cost Owned vs. Leased Property Trend As of December 31, 2023, the Group 1 owned ~$2.0B of gross real estate (67% of dealership locations) financed through ~$0.8B of mortgage debt. Group1Auto.com - Investor Presentation 157 169 202 199 # Properties 43% 38% 36% 33% % Leased % Owned 57% 62% 64% 67% 2017 2019 2021 2023 Page 18#19Sustainability First U.S. Greenhouse Gas (GHG) inventory analysis of our Scope 1 and Scope 2 GHG emissions conducted by a third- party expert Completed an ESG Materiality Assessment that identified key ESG topics, which will be a guide for our integrated business and ESG strategy Installed over 2,000 solar panels in 2022; with a grand total of over 8,000 panels at locations across the U.S. and U.K. Over 600 health and safety audits conducted by a third-party expert. Employed a Health and Safety Manager for our U.S. Operations Made progress to align the Company's ESG disclosures with reference to the Global Reporting Initiative (GRI) Framework Avoided an estimated 3,700 tons of GHG emissions from 2019 through 2022 by transitioning to solar power in the United States Donated hundreds of thousands of dollars to communities in our operating regions Over 13,400 employees representing almost 90% of our workforce, took part in the Employee Engagement Survey Group1Auto.com - Investor Presentation Page 19#20Group 1 Leadership Team Daryl Kenningham President, CEO and Director Joined GP1 July 2011 35+ Years Industry Experience Manufacturer and Automotive Retailing Experience Mike Jones SVP, Aftersales Joined GP1 April 2007 40+ Years Industry Experience Automotive-related Experience Daniel McHenry SVP and CFO Joined GP1 February 2007 15+ Years Industry Experience Public Accounting and Automotive Retailing Experience Edward McKissic SVP, CHRO and Chief Diversity Officer Joined GP1 May 2021 30+ Years of HR Strategy Experience Manufacturer, Consumer Products, Technology, and Automotive Retailing Experience Pete DeLongchamps SVP, Financial Services and Manufacturer Relations Joined GP1 July 2004 35+ Years Industry Experience Manufacturer and Automotive Retailing Experience Jamie Albertine VP, Corporate Development Joined GP1 March 2023 20+ Years Industry Experience Automotive and Financial Service Experience Gillian Hobson SVP, Chief Legal Officer and Corporate Secretary Joined GP1 January 2023 20+ Years Corporate Legal Experience M&A, Capital Transactions, Securities Disclosure, and Corporate Governance Experience Shelley Washburn VP, Marketing and Chief Marketing Officer Joined GP1 January 2024 30+ Years Industry Experience Automotive Marketing and Automotive Retailing Experience Group1Auto.com - Investor Presentation Page 20#21GROUP 1 AUTOMOTIVE® Group 1's Core Values Integrity We conduct ourselves with the highest level of ethics both personally and professionally when we sell to and perform service for our customers without compromising our honesty Transparency We promote open and honest communication between each other and our customers Professionalism We set our standards high so that we can exceed expectations and strive for perfection in everything we do Teamwork We put the interest of the group first, before our individual interests, as we know that success only comes when we work together Respect We treat everyone, customers and colleagues alike, with dignity and equality#22Conclusion Completion of $4.5B in acquired revenues since the beginning of 2021 Focused shareholder return with share repurchases and dividend payments Flexible & balanced portfolio optimization Proven track record of consistent operational execution that has resulted in strong earnings and cash flow trajectory Flexibility of the business model has been proven over two recessions and a pandemic by never losing money on an operating basis in ANY quarter in the history of the company + State-of-the-Art digital retailing platform has grown significantly and allows for much lower cost structure as it gains scale Strong aftersales and 42% EPS CAGR over five year period Concentration in the state of Texas is a tailwind based on strong population and business growth due to low taxes and regulation + Liquidity and leverage profile is very strong Committed to providing an industry leading customer experience Group1Auto.com - Investor Presentation Page 22#23CONCORDE Appendix & Non-GAAP Reconciliations#24Non-GAAP Financial Measures, Same Store Data, and Other Data In addition to evaluating the financial condition and results of our operations in accordance with U.S. GAAP, from time to time our management evaluates and analyzes results and any impact on the Company of strategic decisions and actions relating to, among other things, cost reduction, growth, profitability improvement initiatives, and other events outside of normal, or "core," business and operations, by considering alternative financial measures not prepared in accordance with U.S. GAAP. In our evaluation of results from time to time, we exclude items that do not arise directly from core operations, such as non-cash asset impairment charges, out-of-period adjustments, legal matters, gains and losses on dealership franchise or real estate transactions, and catastrophic events, such as hailstorms, hurricanes, and snow storms. Because these also evaluates on-core charges and gains materially affect the Company's financial condition or results in the specific period in which they are recognized, management makes resource allocation and performance evaluation decisions based on, the related non-GAAP measures excluding such items. This includes evaluating measures such as adjusted selling, general and administrative expenses, adjusted net income, adjusted diluted earnings per share, and constant currency. These adjusted measures are not measures of financial performance under U.S. GAAP, but are instead considered non-GAAP financial performance measures. Non-GAAP measures do not have definitions under U.S. GAAP and may be defined differently by, and not be comparable to similarly titled measures used by, other companies. As a result, any non-GAAP financial measures considered and evaluated by management are reviewed in conjunction with a review of the most directly comparable measures calculated in accordance with U.S. GAAP. We caution investors not to place undue reliance on such non-GAAP measures, but also to consider them with the most directly comparable U.S. GAAP measures. In addition to using such non-GAAP measures to evaluate results in a specific period, management believes that such measures may provide more complete and consistent comparisons of operational performance on a period-over-period historical basis and a better indication of expected future trends. Our management also uses these adjusted measures in conjunction with U.S. GAAP financial measures to assess our business, including communication with our Board of Directors, investors, and industry analysts concerning financial performance. We disclose these non-GAAP measures, and the related reconciliations, because we believe investors use these metrics in evaluating longer-term period-over-period performance, and to allow investors to better understand and evaluate the information used by management to assess operating performance. The exclusion of certain expenses in the calculation of non-GAAP financial measures should not be construed as an inference that these costs are unusual or infrequent. We anticipate excluding these expenses in the future presentation of our non-GAAP financial measures. In addition, we evaluate our results of operations on both an as reported and a constant currency basis. The constant currency presentation, which is a non-GAAP measure, excludes the impact of fluctuations in foreign currency exchange rates. We believe providing constant currency information provides valuable supplemental information regarding our underlying business and results of operations, consistent with how we evaluate our performance. We calculate constant currency percentages by converting our current period reported results for entities reporting in currencies other than U.S. dollars using comparative period exchange rates rather than the actual exchange rates in effect during the respective periods. The constant currency performance measures should not be considered a substitute for, or superior to, the measures of financial performance prepared in accordance with U.S. GAAP. The Same Store amounts presented include the results of dealerships for the identical months in each period presented in comparison, commencing with the first full month in which the dealership was owned by us and, in the case of dispositions, ending with the last full month it was owned by us. Same Store results also include the activities of our corporate headquarters. Certain amounts in the financial statements may not compute due to rounding. All computations have been calculated using unrounded amounts for all periods presented.#25Reconciliation: Adjusted Cash Flow (Non-GAAP) (unaudited, $MM) Operating Cash Flow (GAAP) Change in Floorplan notes payable - credit facilities and other, excluding floorplan offset account and net acquisitions and dispositions Change in Floorplan notes payable - manufacturer affiliates associated with net acquisitions and dispositions and floorplan offset activity Adjusted Operating Cash (Non-GAAP) Cap Ex 2019 2020 2021 2022 2023 $ 371 $ 805 $1,260 $ 586 $ 190 (43) (314) (491) 320 505 4 12 (13) 10 25 332 504 755 916 720 (95) (77) (100) (113) (139) Adjusted Free Cash Flow (Non-GAAP) $ 237 $ 426 $ 656 $ 803 $ 581 Certain numbers may not compute due to rounding; includes Brazil discontinued operations Group1Auto.com - Investor Presentation Page 25#26Reconciliation: Adjusted Total Earnings Per Share (Non-GAAP) (unaudited) As Reported EPS After Tax Adjustments: Asset impairments and accelerated depreciation (Gain) loss on real estate and dealership transactions 2019 2020 2021 2022 2023 $ 9.34 $ 15.51 $ 30.11 $ 47.14 $ 42.73 0.94 1.69 (0.13) Loss on extinguishment of long-term debt Catastrophic Events 0.07 (0.23) (0.19) (1.86) (0.65) 0.58 0.10 1.82 0.72 0.12 0.18 Severance Costs 0.10 Legal items and other professional fees 0.05 (0.12) (0.23) 0.04 0.33 Acquisitions costs including related tax impact 0.57 0.12 0.05 Allowance for uncertain tax provisions Foreign transaction tax Foreign deferred income tax benefit Tax Rate Changes Out-of-period adjustments Non-cash (gain) loss on interest rate swaps Discontinued operations: debt redemption & non-cash CTA losses Adjusted Diluted EPS (0.10) 0.53 0.20 (0.22) 4.46 0.31 $ 10.93 $ 18.06 $ 35.02 $ 45.85 $ 44.24 Certain numbers may not compute due to rounding; includes Brazil discontinued operations Group1Auto.com - Investor Presentation Page 26#27Reconciliation: Adjusted SG&A (Non-GAAP) (unaudited, $MM) SG&A Expenses - GAAP (Gain) loss on real estate and dealership transactions Catastrophic Events Legal items and other professional fees Acquisitions costs including related tax impact SG&A Expenses - Non-GAAP GAAP SG&A % gross profit Non-GAAP SG&A % gross profit 2019 2023 $ 1,312.4 $1,926.8 3.9 22.0 (17.8) (3.4) (1.1) (6.1) (0.9) $ 1,297.4 $1,938.4 74.5% 63.8% 73.6% 64.2% Certain numbers may not compute due to rounding Group1Auto.com - Investor Presentation Page 27#28CONCORDE group1auto.com