In my first 3000 miles or so I have been getting about 27 MPG and it is mostly short runs in the neighborhood and to the office. This current tank I am on I have done mostly freeway driving, and when I'm on the freeway I get an astonishing 35+ MPG! My average for the tank is now about 30.7 -- it has never been that high with just 3 gallons left in the tank.

So I was led to expect the higher mileage would be in city traffic, but I'm getting the opposite. Anyone else seeing this?