What model are you guys griving? I have a 2000 S and I get nowhere near that kind of mpg. I usually get only aroung 16. The computer says 16.4. Now, I do alot of stop&go on the highway during the commute, but would that really cause such a discrepency? Also, I have mentioned the milege to a couple of porsche shops and they said that it wasn't out of the question for city driving in an S.
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