GROUP 1 AUTOMOTIVE INC (GPI) stock intrinsic value fair value estimate & owner earnings analysis

Group 1 Automotive runs roughly 250 new- and used-vehicle dealerships in the United States and the United Kingdom, plus collision centers. Selling cars is the visible part of the business, but much of the profit comes from parts and service work (a 56.2% gross margin in the second quarter of 2026) and from arranging financing and insurance on the vehicles it sells. That income is steadier than vehicle margins and cushions their swings. The U.K. business roughly doubled with the August 2024 purchase of Inchcape's U.K. retail stores. It has been a disappointment: the company wrote down $93 million of U.K. goodwill and $18 million of U.K. franchise rights in 2025, and sold four Jaguar Land Rover stores (about $330 million of annual sales) in the second quarter of 2026. The big pending event is an acquisition. On July 30, 2026 the company agreed to buy 10 Hennessy dealerships, a collision center and related real estate in Atlanta, Georgia for about $1.3 billion. Hennessy's own unaudited figures show $1.73 billion of revenue and $124 million of adjusted EBITDA (about a 7% margin) for the twelve months to March 2026. To pay for it, the company sold $1.25 billion of new bonds on September 22, 2026: $625 million at 6.25% due February 2032 and $625 million at 6.625% due February 2035. The 2032 bonds must be repaid if the deal has not closed by January 6, 2027 (unless that date is extended). The company expects to close by year-end and projects net leverage of about 4.2 times its adjusted EBITDA afterward. We treat the purchase as committed: we add the price to what the company owes and credit the earnings of the stores being bought. How we measure earnings. We start from the cash the business produces after taxes, stock-based pay and the spending needed to keep existing stores running. We ignore swings in vehicle inventory and the manufacturer loans that fund it. That inventory financing (floorplan) rises and falls with the cars on the lot and is repaid as each car is sold, so we treat its interest ($101.5 million in 2025) as an operating cost. The company's other borrowings (bonds, dealership mortgages, finance leases and its acquisition credit line) are treated as true debt. To value the business as a whole we add back the cash interest on that debt (an estimated $172 million in 2025), value the business, and then subtract what it owes. We count nearly all capital spending as upkeep, about $241 million in 2025. Non-cash write-downs of acquired stores are added back as sunk costs, but the company's habit of writing down acquisitions (franchise rights or goodwill in each of 2023, 2024 and 2025) is charged in the low case. On that basis the business produced about $670 million in 2023, $546 million in 2024 and $620 million in 2025 before paying its lenders. We use the $620 million median of those three years as the starting level. We leave out 2021-2022 because those years were inflated by the industry-wide vehicle shortage, and the business has since changed shape through the U.K. acquisition. Even 2023-2025 includes new-vehicle profits well above historical norms: Group 1 earned $3,254 of gross profit per new vehicle in the second quarter of 2026, down from $3,557 a year earlier, against $1,854 in 2009. Growth check: pre-lender cash earnings grew about 14% in 2025, helped by a full year of the U.K. acquisition. The first half of 2026 went the other way: pre-tax profit before interest on non-floorplan debt was about 8% lower than a year earlier, and the second quarter alone was down about 20%, partly because customers rushed to purchase ahead of tariffs in the second quarter of 2025. The first year of our base case assumes an 8% decline, in line with the first half. The Hennessy stores. After taxes and upkeep spending we estimate they produce about $77 million a year of cash. These are private stores whose figures are unaudited, and they carry the same elevated luxury-vehicle margins as the rest of the industry, so we reduce that figure in every case. Base case (median outcome): core earnings fall 8% in the coming year and a further 2% in each of the next two years as new-vehicle margins keep moderating, settling near $548 million. From there they grow 1.5% a year through year ten, reaching about $608 million. That growth comes from parts and service work, where the company reported higher customer-pay repair orders and dollars per order in 2025, although same-store parts and service gross profit was flat in the second quarter of 2026. Over ten years we expect at least one ordinary slowdown, so the base case also includes a mild dip in years six and seven (earnings 10% and then 5% below trend). The Hennessy stores start near $77 million and ease to about $68 million as their margins moderate, then grow with the rest of the business to about $75 million. After year ten we hold earnings flat: owned dealership real estate and long-running manufacturer franchises support the business continuing, but we assume no further growth. We give no credit to future acquisitions or buybacks, since neither is secured. The business is worth about $11.04 billion. It owes about $4.68 billion including the Hennessy purchase, which leaves about $6.37 billion, or $537.61 per share. Bear case (roughly the 1-in-10 downside): new-vehicle margins fall back toward pre-pandemic levels over three years, with continued pressure on used vehicles and the U.K., taking core earnings down to about $431 million. On top of that, the industry has a downturn like 2008-2009. Group 1's own record from that period sets the depth: revenue fell from $6.39 billion in 2007 to $4.53 billion in 2009, and in 2009 alone new-vehicle retail gross profit fell 28% while parts and service gross profit fell only 5%. We apply a 28% drop in earnings in years two and three and recover over the following two years. We also charge $50 million a year for acquisitions that fail to earn their cost, and in this case the Hennessy stores earn about a third less than estimated ($51 million a year). Hennessy is roughly $1 billion of goodwill on luxury stores that include Jaguar Land Rover, the brand the company just exited in the U.K. The $750 million of 4.00% bonds due August 2028 would need refinancing in the middle of that downturn; we assume a rate about 3 points above our benchmark for seven years, which adds about $112 million to what the company owes. The business is worth about $7.06 billion. After about $4.79 billion of debt, that leaves about $2.27 billion, or $192.00 per share. This case is tight: at the bottom of the downturn the business earns only about 1.1 times the interest on its non-floorplan borrowings. In 2009 the company suspended its dividend and bought back no shares; we would expect the same, plus store sales, in a repeat. Bull case (roughly the 1-in-10 upside): the 2026 dip proves brief, with only a 3% decline in the coming year. New-vehicle margins settle near today's levels, and parts, service and finance income keep growing about 3% a year through year ten, lifting core earnings to about $785 million, after which they are held flat. The Hennessy stores deliver about $85 million a year at first and grow at the same pace. The business is worth about $14.05 billion. After $4.68 billion of debt that leaves about $9.37 billion, or $791.72 per share. Debt. At June 30, 2026 the company owed $3.36 billion outside its floorplan loans (down from $3.70 billion at the end of 2025), including the $750 million of 4.00% bonds due August 2028, $500 million of 6.375% bonds due January 2030, its acquisition credit line, dealership mortgages and finance leases. We add the $1.3 billion Hennessy purchase price, which the new bonds plus the credit line will fund. The 4.00% bonds cost less than our benchmark for their remaining life, while the 6.375%, 6.25% and 6.625% bonds cost more; net, that adds about $12 million. Total debt used: about $4.68 billion. We do not subtract the $165 million of cash on hand, because a dealership group needs working cash. What changed since our previous estimate. Little has changed in the business since our analysis two weeks ago; the new bonds were already included. The low case is lower (about $192 versus $204) because it now charges the cost of refinancing the 2028 bonds in the middle of a downturn. The base and high cases are slightly lower (about $538 versus $543, and $792 versus $799) because we re-estimated the share of 2025 cash interest that belongs to non-floorplan debt, trimming the starting level from about $625 million to $620 million. How we set the margin-of-safety price. We are reasonably sure of the earnings from parts, service and finance, which held up even in 2009. We are much less sure of new-vehicle profit, which is still well above its historical norm and still falling. The worst plausible outcome is a deep recession arriving while margins are still normalizing, just as debt peaks after the Hennessy purchase and the 2028 bonds come due. The business would very likely survive that: it owns much of its U.S. real estate, its service income is steady, and it came through 2008-2009. But the shares could be worth around $190 or less if stores had to be sold at weak prices. The things we are most likely to be wrong about are how far new-vehicle profits fall, whether the U.K. business recovers, and whether Hennessy turns into another write-down. If all three go the wrong way, the shares are worth about what the low case shows. Over the holding period, the company pays a $2.20 annual dividend ($0.55 a quarter), and it has cut its diluted share count from about 21 million in 2016 to under 12 million today, though buybacks are likely on hold while debt is high. The price assumes three to five years for value to be recognized. Weighing all of that, the margin-of-safety price is about $235 a share. At that price the steady parts-and-service business and owned real estate carry much of the value; if the base case plays out over four years, it implies about 23% a year including dividends, and only a full recession on top of normalizing margins implies a roughly flat to slightly negative result rather than a severe loss. What would make this wrong: new-vehicle profits falling below pre-pandemic norms, a deep and lasting drop in vehicle demand, rising floorplan costs, the Hennessy stores earning far less than their unaudited figures suggest, or further money spent on acquisitions that later have to be written off.