03 Montero Sport gets 16-17 (mostly highway). I lost about 1 mpg with the safari-style roof rack, plus a little when I first added the lift and larger tires.
Our tow rig, an 05 Ram 2500 Cummins gets about 20 mpg normal driving, 18 or so when towing the boat (6,000 lbs). I haven't had long...