Originally Posted by kenton
Didn't someone say the 6th gear was usually for EPA MPG booster thingies?
it all depends on the gearing
but if you have a 6MT and your last gear is allowing your car to run at 75 at a lower RPM than the 5th gear of a 5MT then of course it will save you cruising gas...
but it also may allow you to have the same final gear and have an extra gear in there, making the gear difference smaller and therefore allowing you to accelerate faster...