With the 6.2 motor, I get ~13-14 around town and ~15-17 freeway, with my all-time best being 17.4 mpg. I do the speed limit in town, but run ~75-80 highway. EPA rating is 12/city, 18/highway, 14/ combined. The truck has 10,600 miles on it, and I expect gas mileage will increase slightly as the motor finishes wearing in.