Estimated mpg 14.5-16.5 @ 60-70mph. The RV has 72,000 miles. Some improvements: New : A/C, hubcaps, kitchen faucet, windshield, roof sealed, water pump, front tires, alignment and tie rod ends. Camper supplies/Accessories can be included. There is a foldable cargo rack that attaches to the Rv trailer hitch for more storage. We also have a custom cover that has never been used & a blue ox tow hitch that pulled a Cherokee Jeep. Installed 4 new tires on the rear.