Forum Discussion
DrewE
Jan 31, 2017Explorer II
As for what brand of motorhome gets the best mileage, that may be one of the old small class C's built on a Toyota pickup chassis, particularly if it has the four cylinder engine. I believe many of them regularly get double digit gas mileage. They have their drawbacks, of course; they're getting pretty old, they're small, and they're very much underpowered, even by RV standards.
Some of the smaller Sprinter based motorhomes get relatively decent fuel mileage (not gas mileage, of course, since they burn diesel fuel). That's partly because diesel has greater energy per unit volume than gasoline.
Traveling at a slower speed will improve gas mileage a good bit in a motorhome. A large part of the power is going to fighting air resistance, and that increases at something like a cubic or quadratic rate with respect to speed. Motorhomes have only slightly better aerodynamics than barns.
Some of the smaller Sprinter based motorhomes get relatively decent fuel mileage (not gas mileage, of course, since they burn diesel fuel). That's partly because diesel has greater energy per unit volume than gasoline.
Traveling at a slower speed will improve gas mileage a good bit in a motorhome. A large part of the power is going to fighting air resistance, and that increases at something like a cubic or quadratic rate with respect to speed. Motorhomes have only slightly better aerodynamics than barns.
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