In 90-degree heat on a blistering 114-degree track, Corvette Racing qualified sixth and eighth for the July 24 Mobil 1 presents the Grand Prix of Mosport. The fourth round of the American Le Mans Series saw the No. 4 Compuware Corvette C6.R driven by Jan Magnussen and Oliver Gavin start sixth in the hotly contested GT class. The No. 3 Compuware Corvette C6.R of Olivier Beretta and Tommy Milner started eighth.

 
The heat was on at Mosport, with summertime temperatures that far exceeded the cool weather that traditionally prevailed on the event's previous Labor Day date. With Magnussen at the wheel, the No. 4 Corvette C6.R turned its quickest time on its fifth lap at 1:17.580 (114.107 mph), while Beretta clocked his best lap (1:17.997/113.497 mph) on his fourth circuit.
 
"It was a really good qualifying lap, no traffic and as mistake-free as you can make one," said Magnussen. "That was absolutely as fast as I could go today. We don't have the same balance in the car as we did last year at Mosport, and the difference is it was cooler. Maybe the cooler weather that's predicted for tomorrow will help us, but usually it helps everybody.
 
"It's very, very close, less than a tenth of a second between each car, but it's not where we want to be and we have our work cut out," Magnussen said. "We'll have to race hard and smart tomorrow. It shows there are some adjustments that need to be made to the performance of the various cars, if only small adjustments."
 
Beretta was pleased with the improvement in the No. 3 Corvette C6.R following the final practice session. "The performance in qualifying was better, no question, and the team did a good job," Beretta said. "The problem on my lap was traffic. I did my qualifying time, and then I had traffic on the next three laps. Sure, I could have been quicker, but it looks like some of the other cars are definitely quicker than us – but it's a long race!"
 
Balance of performance adjustments announced after the Lime Rock race two weeks ago will be implemented in the upcoming round at the Mid-Ohio Sports Car Course.