2015 Chevrolet Corvette 8-Speed Automatic First Drive
What do you do when Chevy hands you the keys to a 2015 Corvette Stingray and an open run at the Milford Road Course? You flog it for all you’re worth, whether you know the track or not. Around town, the 8-speed’s many ratios and smooth shifting equate to an easy, comfortable ride, whether in Eco, Tour, or Sport modes. On track, in Track mode (which affects not only the Performance Traction Management system’s settings, but the interoperation of those settings with the transmission’s behavior), even very advanced drivers will find the “D” selector on the transmission as useful and as accurate a method of gear selection as the “M” position and the paddle shifters mounted to the steering wheel. It’s a very smart algorithm that keeps the car in the right gear to deliver maximum acceleration at any time. On the torturous Milford Road Course, an assemblage of the most harrowing turns from the most hardcore tracks in the world, there’s no hiding deficiencies—whether they’re in the driver or the car. Keeping the vehicle in a state of constant upset, there are direction changes, off-camber lunges, blind crests, the Karussell-like “Toilet Bowl,” and more to unsettle the suspension and drivetrain and push any driver to their limit. When you only have a handful of laps to learn the track and the car, you worry less about line and more about listening to what the car is doing. That’s what we did, and we found the 8-speed to be a really welcome companion on track, whether you’re letting the transmission’s brain select the gears or doing it yourself with the paddles. For our own money, we’d still opt for the 7-speed manual, especially with 2015’s improved automatic rev-matching algorithms, but we won’t be looking down our noses at anyone who chooses the 8-speed auto instead. In fact, we might be looking at their tail lights. Thanks to a low 4.56 first gear ratio, the 2015 Stingray’s 8-speed gearbox helps the car get to 60 mph 0.1 second faster than the manual at 3.7 seconds, and run the quarter-mile 0.1 seconds quicker at 11.9 seconds, too. Despite the increased acceleration, the 8-speed also gets better gas mileage than the stick, improving highway economy by 3.5 percent to 29 mpg.
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