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      10-28-2012, 04:48 AM   #12
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United Kingdom

Drives: F30 330d M Sport sDrive
Join Date: Aug 2012
Location: London, UK

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Originally Posted by HighlandPete View Post
BMW list the same figure for the F11 520d, 530d, 535d and 535i, so not a petrol vs. diesel thing as such.

Wonder how the F30 is so different with the same frontal area and panel designs. Could it be the flaps? Not a bit of trickery is it, on whether open or closed?

Need to do a bit of research on this.

Sorry, that's not correct.

From the Car Configurator:

520d EfficientDynamics Cd = 0.27
520d, 530d, 535d Cd = 0.28
528i, 535i Cd = 0.29
550i Cd = 0.30

So it is a Petrol vs Diesel difference. Possibly due to a different and more aerodynamic engine undertray.
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