Review on the new 7.3 Ford V*

mleekamp wrote:
I'd say it's more about the wind resistance than the weight of your RV that affects mileage....

I agree that the aerodynamics of the rig will influence the fuel economy. I am no expert, but I feel it could be nearly as influential as the over-all weight.

Some motor homes are flat-faced compared to others built on the same chassis. Then there is the size of the face. Some rigs are taller and wider than others. Given equal weight and identical chassis, a worse-case versus best-case scenario, you would see a change in fuel economy. How much? Who knows. But based on numbers shared over the years, I estimate a 10% difference.

A class C (B+) a best case scenario with aerodynamic cap, angled transition walls, narrow body, and lower roof.


I wish I could find a better worst case scenario, but here is something.