Thor Forums

[Chance]

Originally Posted by JamieGeek

10 - 12 mpg would equal what the pickups get with the V-10. I think that is a bit unrealistic given that the Axis/Vegas units are larger, much less aerodynamic, and weigh in at least 4,000 lbs heavier than a comparable F-250, or F-350.

My E-350 van with V10 typically gets between 14 and 16 MPG on the highway -- with about 15 MPG being common at around 70 MPH (which I would not consider conservative driving if in a Class A motorhome). A couple of times I got 16 MPG by holding speed around 60+ MPH.

You mention getting around 8 MPG with your truck pulling a 5th wheel trailer, right? I'd guess that your combined weight of truck and trailer was much higher than that of your Axis, and that the height and width of your trailer was larger too. Yet you got 8 MPG and now get 8.5 MPG? That's not much of a difference.

These Axis are geared too low for optimum fuel economy. Compare to much larger F53 motorhomes, the total gearing is about the same. That creates waste. Granted they will drive slightly better with lower gearing, but fuel economy suffers.