What's the city mpg of the Excursion?

I'm wondering what the acutual city mpg of the 2003 Ford Excursion is. Don't give me any of the EPA stuff because, it's not on there. I want a gas compared to a diesel. I want to buy one as my first car.

8 miles a gallon city and 12-13 on the highway.

http://www.fuelly.com/car/ford/excursion/2003