Ok I just got my 05 F250 4x4 late last week and have only had a chance to run one tank through it, but for kind of around town driving I do here in southern Maryland this first tank was 14 MPG. My old 98 F150 4x4 was only getting me 16 MPG for the same type of driving (and it had the 4.2L V6 and 3.55 gears).

Truck details are 2005 F-250 Super Duty Crew Cab 4x4, 5.4L, 3.73 LS, Torqushift Auto, LT285/70-17 tires, ESOF transfer case. 51K when I got.

My old 87 F250 super cab with the 6.9L diesel has blown a combustion chamber (needing head work) after 300K+ miles and the condition of the body, trans and rear end just made it too expensive to fix (I have done all the work on this truck for the last 15+ years) even with me doing all but the machine shop work. It is just too rusty and too worn out finally. The 98 F-150 was my dads truck from new, but being it was from New England everything under the hood and body is a mass of rust. Working on it is (now was) an exercise in flustration with broken/rusted bolts etc .

So hopefully this 05 will be as good as my 87 was (I am really going to miss that truck), minus the fact it is not a diesel. Fuel mileage of this new truck sucks compared to the old diesel but is not bad compared to the F-150. That F-150 can really eat the gas when towing (it has only ever towed my utility trailer with my motorcycle on it, this is a faily light setup of less than 1500lbs) even at 60mph. I will provide an update once I get a chance to put some miles on it.