Quote:
Originally Posted by chillsworld
Were those numbers reached with by placing the different engines in the same vehicle? Did each vehicle have the same trim level and body styling package? The answer is probably no.
In regards to aerodynamics, these cars aren't the "same" vehicle... To display a difference in CD and say it's due to cooling, would seem to be over simplifying to me.
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Those numbers were taken from Mercedes website (german). Most likely they are for basic model without any extra trim or spoilers. AMG-model has a bit different shape for outer decorstion for sure, but that doesn't explain a difference that huge.
I didn't say that it's only cooling. Wide tyres have also a major effect. And of cource there are many other thing but those two are always major reasons for high Cd values.