We've been having a discussion on the hardside section about mpg etc. I know many of the hardsides are HEAVY and milage is cut by weight, but I'd like to hear about air resistance of a hardside vs pop-up and mpg. There are a pile of other variables to consider also on milage probably driver being the most important.
My camper is a real light weight 1994 9.6 Northern light that sits in a 2006 Dodge Cummins Quad cab, auto trany. Without camper mpg runs 17-20 depending on terrain with camper we get 12-14 again terrain makes a difference. I always drive by RPM and that goes 1700-1800, which means I drive like grandma to some folks out there. The weight of the camper is really nothing for our engine, but I do believe the air resistance IS a major factor of mpg.