Quote:
Originally Posted by UltArc
For example, does the i8 need as low of a CD if the frontal area is much less? I am not saying THAT is the answer, rather saying I imagine there is another factor at work.
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Actually, the i8 is Cd .26.
The i3 is a bit narrower than a 3-series, but taller. CdA for the i3 works out to .69 m^2, but .64 m^2 for the 328i. The i3 with range extender is even worse, at .71 m^2 (presumably from cooling for the gas engine).