Quote:
Originally Posted by AEOLUS
I dont know in which wind tunnel is meassurments done..
CLA has 1480kg, Merc. claim 180 blue efficiency has Cd=0.22 and 250CDI in test has shown Cd=0.30.
This two cars are 99.9% identical, to me is strange so big difference in Cd.
What do you think?
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In 2013, BMW's i8 also registered Cd 0.22, in CFD.
Kalheinz Ebbinghaus, aerodynamics engineer on the BMW i8 commented that ' Thirty to forty percent of a car's aerodynamic resistance is created in the wheels and housings,' ( up to Cd 0.088 with the i8 ).
That easily covers the variability of the CLA if we ignore the A2 Wind Tunnel data. And I recommend we consider only numbers from the M-B tunnel.