The 2015 Corvette Stingray can achieve up to 29 MPG on the highway thanks to the gearing of its all-new 8L90E eight-speed automatic transmission. As you may know, that transmission is also destined for use in the 2015 Corvette Z06, which will return equally as impressive highway fuel economy numbers for a 650 horsepower V8 supercar.
According to the U.S. Department of Energy, the 2015 Z06 will return 13 MPG in the city and 23 MPG on the highway for a combined rating of 16 MPG. Those figures are for eight-speed automatic Z06s only, as the figures for seven-speed models are not listed. We’re expecting either improvements of one MPG like seven-speed C7 Stingrays or identical returns with manual Z06s.
The Z06’s fuel economy is comparable to that of other powerful forced-induction V8 cars. The McLaren 650S Coupe’s 3.8-liter twin-turbo V8 and seven-speed dual clutch transmission result in 16 MPG city and 22 MPG highway for a combined rating of 18 MPG, which is only a small improvement over the Z06 considering the engine is smaller and turbocharged. For comparison’s sake, Dodge’s new eight-speed Challenger Hellcat will return 13 MPG city, 22 MPG highway and 16 MPG combined.
The 2015 Z06 benefits from several fuel-saving technologies also implemented on standard C7 Corvette Stingrays including direct injection, Active Fuel Management  and continuously variable valve timing. Crucial to its efficiency is Active Fuel Management, which allows it to run as either a four-cylinder with no boost, a V8 with no boost, or a V8 with boost, depending on the levels of performance required at any given time.
Comments
Gotta be some inaccuracy’s here, how can a 4,439lb challenger that is less aerodynamic return the same mileage as the Z06 that weighs only 3,524lbs.
Axle ratio and the Z06’s aero down force maybe? =Track beast!
@ fastyle
Another comparable motor is in the furd gt500;
662 bhp, 631 lb-ft, 6-sp Manual,
15/24 mpg, 18 combined
3,850 lbs
But, performance-wise, I suspect the Z06 would gut the 500 alive.
Tires. Those puny tires on the Hellcat offer significantly less friction/drag than the monster meats on the z06. If only GM released that tiny tires was the way to go on their performance cars! z06 is rated 1 more highway mpg too.
I still think 707HP is way more impressive then 650HP at about 65% the cost… this Z06 is outpowered by a PONY CAR
707hp wow a car to do burn outs, power is nothing if you can’t control it, a
We both know that torque is way more important when it comes to these kind of vehicles. If you were smart, you’d know that both, Z06 and Challenger Hellcat both have 650LB-FT. Not to mention that the Z06 is way lighter and much more aerodynamic.
Because you’re only caring about hp/$.
You’re missing things like skidpad, G’s, MPG, and those all important residuals. That, and the C7 doesn’t look like a ridiculous throwback.
and you’re an idiot for thinking that. it’s not about just horsepower any car can get massive amount of horsepower, it’s the handling the ride, the performance of the car that cost money to make. Magnetic ride suspension, the carbon ceramic brakes, the 8 speed transmission that can shift fast, handle the power and fit in a space. The list goes on and on… the Hell cat is a V8 with a turbo…BFD…you can do that with any used car. Take any F body car and bolt a turbo, new throttle body and injectors, and throw some nitros and you got 800 HP…BFD
My 2008 z06 gets 9mpg on e85 or 14.2 mpg on 93 making 590 rwhp or 680 hp (345 pss tires) naturally aspirated. My z06 is also 400lbs lighter than this tank. I feel like it’s doing pretty good for it’s tires/hp rating.
We will see.. Bc dyno and track are two different worlds, wind, weather mechanics will come in to play… Then 707hp dodge, will look stupid against a world class sports car