I broke the SRT-10 in on a trip to Laughlin for the Harley run. On the way over I averaged 17.1 MPG on the way back (huge head wind) it only averaged 15.7 MPG, Not that we bought these trucks with gas mileage in mind,but it's nice to know what they get on a long run. The security at the Flamingo said there was a constant flock around the SRT 10. Mofo