the truck is a powerstroke diseil so it would get good mpgs stock byut with the extra weight and largher tires its prolly down to abotu 15. disiels trucks get really good gas mileage, for a truck at least, espicially if they are 5/6 speeds.
Personally, I really dislike it. If you buy a truck with a bed, you best be using it for some sort of work, that's what they're designed for, not for family use. If you want a big family car, get the Commander or something along those lines.
the Power Stroke Desil will get more milage then alot of cars...and it will out-live the truck...the cummins in the dodge might get a bit more cause its a 6....but still, me like