carp65 wrote:
If you have to be concerned about gas mileage, perhaps you don't need an RV.
Too many factors effect each fill-up--speed, terrain, wind, tire pressure.
When asked about mileage on our 2015 Tiffin Allegro, V-10, my responce was
"Didn't buy it for gas mileage". Very seldom check mileage--it is, what it is.
My response for this question at some fuel stations has been that it gets better than an economy car, once you factor in the Hotel's and restaurants.
I do check mileage however, since I don't like having a leak.
Happened once with an old gasser, but smelled it, so...