Years ago (2008) I wondered the same thing about VW:
http://ecomodder.com/forum/showthrea...agon-5887.html
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So why then would the presumably heavier as well as less aerodynamic 2009 Jetta Sportwagen with its likely higher Cd and (slightly) more frontal area (standard roof rails) have an identical fuel consumption rating as the Jetta sedan equipped with the same drivetrain?
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I find it difficult to believe that the actual fuel consumption isn't at least 2.4% different (2.4%=1 mpg from the 41 mpg hwy rating for the TDI M-6) between these two vehicles.
Yet the cars' ratings are identical for every powertrain variation.
I don't buy it.
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