None of the other HD diesels get good mileage either.............. with all of the emissions garbage.I had a crewcab 450 2wd with the 6.4 and it was the biggest piece of junk I have ever owned.. I could not get any better than 8mpg without pulling and put a catback, cai, gutted the dpf filter and it gave me 1mpg out of it.
I could not wait to get rid of it.. I will never buy another Ford in my life again.
That 6.4 diesel is junk.
The new Cummins gets about 1-2mpg better than the Ford, and you can expect the emissions version of the Duramax to do about the same. The reason is, they are much lighter than the Fords.
Does GM and Dodge even make something comparable to a F450???