As with most sports cars, such as the Corvette Stingray, fuel economy isn’t one of their strong suits, but Americans and their muscle cars seem to be inseparable.
The 2015 Corvette Stingray will still come with the standard seven-speed manual transmission, which many prefer for driving pleasure, but the optional six-speed automatic transmission of yesteryear always left the heart wanting, for both performance and fuel economy. The new and optional General Motors 8L90 eight-speed automatic transmission is a boost, but I’m thinking it still doesn’t go far enough to address the greater concerns of fuel consumption and emissions.
Unlike traditional automatic transmissions, which shift between 250 and 500 ms, the new 8L90 transmission shifts in less than 100 ms, just shy of supercar shift times, as low as 8 ms. Still, when the blink of an eye averages 300 ms, the sub-100 ms shift times of the 2015 Corvette Stingray’s eight-speed automatic transmission could be said to be instantaneous. Well, that’s great for performance, but what about fuel economy?
Considering that the Corvette Stingray is powered by a monstrous 6.2 ℓ naturally-aspirated V8 engine, it should come as no surprise that her fuel economy is nothing to be proud of. The EPA estimates that the 2014 version maxxed out at 29 mpg highway, but GM estimates that the 2015 version, equipped with the new eight-speed automatic transmission, could breach the 30 mpg mark. We’re still not very proud.
I know, 30 mpg isn’t really a big deal. Will we ever get over this need for speed and get off the dino-teats? Corvette, if you really want to impress me, drop the 6.2 ℓ and put in a turbocharged 3.6 and a plug-in hybrid electric all-wheel drive system, if you like. You can have your performance, but lay off the petroleum.