Quote:
Originally Posted by duffremle
but the question is how less efficient, everything else being equal?
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Well, that's just the point: everything else ain't equal most of the time.
You can compare it within a model range though.
The
lowly 2L 90 kW BMW 116 consumes 6.1 L/100km (143 g/km CO2)
The 250kW M1 in the same shell consumes 9.6 L/100km (224 g/km CO2).
Half again as much fuel consumption