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I've yet to take my z51 on a long run, but through the mountains and along the coast where I live, my average mileage is around 22 mpg. Still better than my fiance's Lexus.
I actually noticed my mileage is dropping. I think this is because as a new Vette owner, I'm no longer babying the car around town. More fast starts, twisty roads, etc, etc. Too much fun = lower gas mileage...
I didn't choose the Corvette for gas mileage...I doubt any of us did. That said, I have tremendous respect for the engineering behind a car that can produce sub-4 second 0-60 time, quarter mile times in the low 12 second range, yet still produce about 30 m.p.g. when driven more sanely.
I averaged 23.7 m.p.g. in my c6 z06, over 26,000 mostly highway miles. I didn't buy it for gas mileage, but that amazes me as much, or more than the performance of a 505 horsepower car. In the 1960's and 1970's it wasn't tough to have a car with 500 horsepower...but none of them ever came close to that kind of gas mileage. Even 6-cylinder powered cars then didn't get that kind of efficiency.
I am curious about the math behind the best in 50, 25 display changes. I wonder how many miles you have to drive to achieve the higher MPG and have it displayed? I assume topography has a large amount of impact and of course, the speed being driven. How about tailwinds? Also, it is pretty cool that you can cruise at 80 and the V4 still maintains your speed. Good example of physics at work and possibly good aerodynamics.
We bought our '14 M7 Z51 coupe to use as a grand touring car and it has performed magnificently for 27,000 miles! Last week we did a run from Ohio to Naples Fla and return via the Amelia Island Concours. With 2 up, professional camera gear for 2, and personal stuff we were at max GVW.
Overall the trip of 3000 miles averaged 26.0 mpg running exclusively in E mode. One stretch of 200 miles at an average speed of 78 mph scored 30.1 mpg.
In the past we have made the same trip in our MINI Cooper S and averaged 2 mpg less under the same load and driving conditions.
The Stingray is a fast, beautiful, comfortable, and efficient testament to American engineering. Well done Corvette team!
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.