Group 1 Automotive (NYSE: GPI) reported earnings on May 2. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended March 31 (Q1), Group 1 Automotive beat expectations on revenues and beat expectations on earnings per share.

Compared to the prior-year quarter, revenue grew significantly. Non-GAAP earnings per share increased significantly. GAAP earnings per share contracted.

Margins dropped across the board.

Revenue details
 Group 1 Automotive logged revenue of $1.96 billion. The 11 analysts polled by S&P Capital IQ predicted revenue of $1.92 billion on the same basis. GAAP reported sales were 18% higher than the prior-year quarter's $1.66 billion.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
 EPS came in at $1.16. The 12 earnings estimates compiled by S&P Capital IQ forecast $1.04 per share. Non-GAAP EPS of $1.16 for Q1 were 20% higher than the prior-year quarter's $0.97 per share. GAAP EPS of $0.88 for Q1 were 9.3% lower than the prior-year quarter's $0.97 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Margin details
 For the quarter, gross margin was 15.3%, 30 basis points worse than the prior-year quarter. Operating margin was 3.0%, 20 basis points worse than the prior-year quarter. Net margin was 1.1%, 30 basis points worse than the prior-year quarter. (Margins calculated in GAAP terms.)

Looking ahead
 Next quarter's average estimate for revenue is $2.23 billion. On the bottom line, the average EPS estimate is $1.36.

Next year's average estimate for revenue is $8.69 billion. The average EPS estimate is $5.17.

Investor sentiment
 The stock has a three-star rating (out of five) at Motley Fool CAPS, with 91 members out of 128 rating the stock outperform, and 37 members rating it underperform. Among 42 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 37 give Group 1 Automotive a green thumbs-up, and five give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Group 1 Automotive is outperform, with an average price target of $72.00.

The rich are different than you and me: They might not notice the moneymaking stories right under our noses. In our new report, "Middle-Class Millionaire-Makers: 3 Stocks Wall Street's Too Rich to Notice," we give you three Peter Lynch-inspired buy-what-you-know stocks for the 99%. Click here for instant access to this free report.