fair enough...as i said, in theory, the trip computer should be quite accurate, but i don't have the V6 model so i have no personal experience with it first hand...ours seems to be fairly accurate, but i haven't done any instrumented tests to verify...just noticed the numbers, mileage and quickly calculated and they seem to be about right...next time i fill up, i'll check to see how accurate it really is to compare and let you know if the Turbo 4 is the same (it wouldn't make sense that it would be different).