I have the same truck with 4x4 (1300 miles on the odomoter). My 3rd tank of fuel yielded 15.06 mpg (mostly an 11 mile commute and around town jaunts). I expect it'll get better over time as the motor breaks in. 15~16mpg around town, and 17~19mpg on trips is what I expect (pretty much what I was getting on my '01). Some people get more, some get less.