The other big problem is "city" driving is such a broad term and can mean so many different things. In true CITY driving (like driving in a physical city - Washington, DC), I get between 9-12 mpg depending on how many lights I hit and how many times I am first in line at the stoplight. If more rural "city" driving, where its just putting around town in the suburbs, I'll get 15-18 and even 20 on occasion. Thats also being able to drive 40-55 mph on most roads, with far fewer stops and starts.