Have 4000 miles miles on it now and thought I would give an update on mpg. By the way, it runs fine on cheap gas. Around town it gets 12-13 mpg. You really have to watch how you drive cause it can really burn fuel if you want it to. Out on the highway it gets 18.5 mpg. The engine management system that shuts down part of the engine really works and you can't tell it's operating. Pulling a 6000 lb. trailer on the highway, 13 mpg. Pulling a 14K lb. trailer on the highway, 11 mpg. I don't tow that much anymore, so I'm pleased with the performance for my use. My old Duramax was a better tow vehicle. This one is more on a par with my old non turbo 7.3 Ford. Should be a great road truck for hunting trips and serves to haul an occasional load of hay and stock trailer.
