Group 1 Automotive (GPI) has just posted fresh Q1 2026 numbers, coming off a recent quarter where Q4 2025 revenue sat at US$5.6b and basic EPS was US$3.48 as part of a trailing twelve month profile of US$22.6b in revenue and EPS of US$25.17. Over recent quarters the company has seen revenue move from US$5.5b in Q1 2025 to US$5.8b in Q3 2025 and US$5.6b in Q4 2025, while quarterly basic EPS ranged from US$1.03 to US$10.78 across 2025. This has set up a results season where investors are focused squarely on how much earnings power is translating into sustainable margins.

See our full analysis for Group 1 Automotive.

With the headline figures on the table, the next step is to line these results up against the prevailing story around growth, risks and profitability to see which narratives hold up and which start to look stretched.

Margins Under Pressure At 1.4% Net

• Over the last 12 months, Group 1 Automotive generated US$22.6b in revenue and US$320 million in net income, which works out to a 1.4% net profit margin versus 2.4% a year earlier.
• Consensus narrative highlights aftersales and used vehicles as key support for margins, yet the data points to compression instead:
  • Same store sales growth on a trailing basis is 3.9%, compared with individual quarterly figures of 5.8% to 6.1% in early 2025. Revenue is growing, but not enough to keep net margin at the prior 2.4% level.
  • Net income on a trailing basis is US$320 million against revenue of US$22.6b, while earlier trailing data showed US$500 million of net income on US$18.9b of revenue. This challenges the idea that scale alone is protecting profitability.

On this set of numbers, bulls arguing for margin resilience have to explain why a 1.4% net margin is enough of a base for future improvement when it was 2.4% a year ago. 🐂 Group 1 Automotive Bull Case

Valuation Gap: 13.1x P/E And DCF Fair Value

• The shares trade on a trailing P/E of 13.1x versus a peer average of 29.3x and US Specialty Retail at 19.9x, while the supplied DCF fair value of US$547.66 sits well above the current share price of US$356.87.
• Bears focus on earnings pressure to justify that discount, and the recent figures give them plenty to point to:
  • Reported earnings have declined by an average of 6.9% per year over the last five years, which sits awkwardly next to forecasts for 9.3% annual earnings growth and 3.6% annual revenue growth.
  • A one off loss of US$222.5 million in the last 12 months helped pull the trailing net margin down to 1.4%, so part of the current valuation gap reflects concerns that similar hits or weak cash conversion could recur.

With this mix of a 13.1x P/E, a DCF fair value of US$547.66, and earnings that have shrunk on average over five years, skeptics see the discount as a response to real business and balance sheet risks rather than a simple mispricing. 🐻 Group 1 Automotive Bear Case

Quarterly EPS Swings Versus Forecast Growth

• Across 2025, basic EPS moved from US$9.66 in Q1 to US$10.78 in Q2, then down to US$1.03 in Q3 and US$3.48 in Q4, at the same time as quarterly revenue held in a relatively tight band between US$5.5b and US$5.8b.
• What stands out against the bullish view is how these swings compare with the smooth growth path assumed by optimistic analysts:
  • Bullish projections look for earnings to reach about US$602.7 million by 2029 with margins rising from 1.4% to 2.4%. Yet the trailing 12 month net income of US$320 million and the volatile quarterly EPS pattern show a business where profit can move sharply even when revenue is steady.
  • At the same time, revenue forecasts of roughly 3.5% annual growth sit close to the recent 3.9% trailing same store sales figure, so most of the bullish uplift depends on margins improving from the current 1.4% level rather than on faster top line expansion.

Next Steps

To see how these results tie into long-term growth, risks, and valuation, check out the full range of community narratives for Group 1 Automotive on Simply Wall St. Add the company to your watchlist or portfolio so you'll be alerted when the story evolves.

If this mix of risks and rewards feels finely balanced, act quickly, review the full data for yourself, and weigh up the 4 key rewards and 3 important warning signs

See What Else Is Out There

Group 1 Automotive is working with thin 1.4% net margins, shrinking profitability from 2.4% a year earlier and highly volatile quarterly EPS against relatively steady revenue.

If that mix of margin pressure and earnings swings feels like a lot of risk in one stock, you might balance your watchlist by also considering 76 resilient stocks with low risk scores.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.