Yep, lots of variables here, but with my rig (fully loaded) on the drive from AZ to GA, I got 12-13 MPG. Adjusting for weather conditions of course, I hold it to around 65 avg. I'm retired and living in the slow lane now. W/o 5er on the last trip to VA from GA and back, no joke, I got around 17 and upwards to 21 MPG! And it ain't no fish tale here either. Although, I didn't do very good on my last fishing trip, but that's another story.