Quote:
Originally Posted by rayhawk
No way they would go to the extremes they did if it was just a slight hit to fuel economy.
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I can see it.
I have no idea what the exact numbers are, I'm just going off all that I've read in the last couple days about this whole thing. But lets say retuning the engine causes a 10% hit in fuel economy. I would consider that to be slight myself, but it would have a fairly large impact on their CAFE score as well as erasing a lot of the fuel economy advantage that VW's TDI cars have over a gasoline equivalent.