I just did a bit of a hypermiledge test with this truck, cruise set on 62 MPH on a 100 mile all flat ground round trip with nothing in the bed but 3 fishing poles AC cranking and got 22.7 MPG. Even my 318 2wd dakota won't do that, heck the closest I came was doing 65 MPH AC off and got about 17 MPG, even though I have to use premium in the giant 3/4 ton it is cheaper to operate... (I still prefer driving the dakota though).