Quote:
Originally Posted by MetroMPG
Whoops! That was a bald faced assumption on my part. (That'll learn me.)
I'm skeptical about the identical Cd though (and/or inclined to believe trebuchet's idea). VW USA shows Cd of .31 for the sedan, but "TBD" for the wagon. |
I agree that the sedan and wagon don't have absolutely identical drag coefficients, but I think its entirely possible for them to be within .01 decimal point. In fact I think there is a good chance the wagon is more aerodynamic than the sedan when you drag it out to 3 decimal points. I see no reason to automatically assume that the sedan will automatically be more aerodynamic than the wagon. The back window and trunk lid of a sedan are a very complicated aerodynamic problem that has to be compromised with functionality and visibility. On a wagon the roof makes one continuous smooth curve all the way to the bumper.
I still don't get why the new Jetta wagon is less aerodynamic than a 10 year old Passat wagon. Did VW tear down its wind tunnel recently?