Quote:
Originally Posted by Richtw
I had the same engine in a 428 GC, it was not the most economical no matter how I drove it could not get better than 32mpg. I feel your pain!
Currently driving a C43 with 3l bi turbo generating huge bhp by comparison, in a much heavier car I seem to be getting 28mpg! Not a million miles away from the 428..... i don't understand either!
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It's just the awesomeness of having 6 cylinders!
But in all seriousness during normal driving you need the same amount of power and torque regardless of the engine. To maintain 40mph you only need a few HP all the rest are spares. The difference in mpg largely reflects the different weight and frictional loses of different sized engines.