my 2005 6L 2500 with 4:10 rear end is getting 15.3 mpg... better if i can miss a few stoplights.. gotta keep my foot out of all that HP tho.
The Ox gets about 10 mpg, but it's got a bad carb and I've got a heavy foot (283)
the Coupe gets about 12 mpg, with a good carb and my heavy foot (350).