Thread: MPG and the M3
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      03-18-2008, 08:28 AM   #89
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Quote:
Originally Posted by godot View Post
There's another big factor that I didn't see anyone mention: The Corvette's manual tranny has a magnetic gate that forces you to skip from 1st to 4th gear, except when accelerating hard. So in casual driving, you physically cannot enter 2nd or 3rd. (Of course, a lot of people find this massively obnoxious and disable it with an aftermarket wiring harness.) Presumably, the software for the automatic tranny does something similar.

As to highway mileage, coeff of drag is <0.29 in the Vette vs. 0.32 in the M3. Part of the tradeoff of having more passenger and cargo room, I suppose.
Are you sure about this? I have driven both the the ZO6 and MY2008 C6 and did not find this to be the case even once. These were new, un-sold cars at the dealership.
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