Re: How fast do you drive? I had several trucks with several campers, also long time ago I had a winnebago on the dodge frame and I got the same fuel with all my trucks whether we were hauling a camper or pulling a trailer, 7-9 mpg. Got that with the winne too. Worse I got was a couple of years back I bought a ford truck with a 460 engine and a 27 foot holiday rambler trailer and we drove to missouri and back and got 4 mpg. Traded that truck and trailer in after one trip for the motor home we have now. And I kept my speed between 55 and 60 with the truck and trailer. With my trucks and campers I drove around 65 on average.