In Reply to: Re: What kind of gas(petrol) mileage for an M3? posted by M3 on January 11, 2000 at 14:24:16:
On a all highway straight road trip from Maryland to Upstate New York doing 80-85 the whole way, my on board computer said I was averaging 31.4 mpg (I have a evo box w/ TMS chip). I topped the tank off in Maryland before I left and drove the 380 mile trip on one tank (which was dry towards the end). I think I get great gas mileage unless I his the gas harder of course.