I have a f150 with the 5.4 xcab with 3.73 limited slip wit a/t, 5.4 motor. Summer time 15-15.5 mpg. Winter between 11 and 13 mpg depending if i have the plow on. Mostly highway driving. The gas milage is terrible but I just ordered a 2007 exactly the same. The reason i didn't switch to a chevy (supposed to be better milage) is that to change the plow over from a Ford to a Chevy is about $2000 and I know the ford pulls the 16' trailer with the tc30, bucket and bush hog like it's not even there. Don't know if the chevy can claim that. The dodge is not even a consideration, bad milage and even worse front ends. Tires are bald in 10,000 miles and the trucks pull to one side or another after about a month. Toyota and Nissan have come a long way but, they recommend no plow and I don't think the towing capacities are there yet.