[tentcamper]

I would assume going to a 2720 you would be around 15/16 if you normally get 20. Bigger motor less mpg hit. My highlander with a 2720 was around 17 with 2720 and 23 without. But I drive slower with the camper around 65, without 73.

Not sure, but we lost about 1.5 mpg going from a 2720 to a 3023 using the same TV. I think it has to do with the length of air drag behind the TV. But there too many variables to be certain of the true effect. additional 200 to 400 lbs, tires, how the brakes are adjusted, etc.. and the 3023 was about 1.5" taller than the 2720, which I had to adjust the hitch to compensate etc... But the AC unit on the 3023 has a lower profile with less air drag. But I think there is a loss due to the length air drag by 1 - 2 mpg?