You guys seem to be getting way better MPG than I am. I do 90% city driving and have a lead foot . I'm averaging around 12-14 MPG. I use premium gasoline. Have the RC 2" level and 275/60/20 Cooper Zeon LTZ tires. Front air dam is still installed. For reference, when I dropped my truck off for the fire recall, they gave me a 2WD SLE loaner. DIC said average MPG was 16 something. I reset Trip A and while I had it, the average MPG was 14. Not much better than my leveled 4x4. So I think my poor MPG is more a factor of the driver... I don't how you guys can get 16-20. I would get run over driving like that around here.