Quote:
Originally Posted by some_other_dave
In the real world, a smaller engine should still get better MPG than a larger one.-soD
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Should, but often doesn't. Even overgearing the smaller engine, it's working at WOT a lot more of the time, and above 85% throttle, the A:F richens from 14.7:1 in closed loop to around 12:1 in open loop. Plus those extra revs from overgearing.
I can find you 1.1L cars that never could do 30 MPG, and I can find you 6.0L cars, with more drag, that can return 35 MPG consistently, no mods to either.
So what if the 1.1L is making more HP / Liter? That's only about RPM. The 6.0L meets ULEV standards, and puts down 5 times the power.