Here's a some of EPA vs. user milage numbers I've come across recently for a few cars:

Rx-8 18 vs. 15 (my milage)
350Z 20 vs. 16 (Road and Track)
Prius 60 vs. 40 (C&D and NPR)

Actually, the Rx8 is the best of the lot getting 83% of EPA.
--Dave.

 

I'd venture to say that most people are getting 16-19mph in city, so the EPA rating is even better than 83%

 

I wish 14.5 to 15..........