Quote:
Originally Posted by Panther140
The sizing of the engine has nothing to do with it. Regardless of which car you are in, drive like Ecky and I are saying. It is the most efficient way. Get the work done with the engine at peak torque and WOT. Coast down the other side. Avoid wind drag.
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Peak torque on many small 4 (and 3) cylinders is above 4000rpm, but peak efficiency is usually below 3k. In the case of my Insight, it's 4800 peak torque, 1750 peak efficiency, with terrible BSFC at 4800rpm.