Travel trailer expected gas mileage

[team bradfield]

going west in the mountains, 6, no mountains but still going west, 10, try to leave early as the sun warms the earth it gets windy in the afternoon, south or east travel no mountains, like @rockwood55 said 12-14 mpg

 

[BGMAC]

Many variables. Aero dynamics is a big issue. The vehicle is a big issue. You may have a large vehicle, big engine, but gearing could throw it out the window.