A friend bought a used RV some years ago. He said that he got 6-8 miles per gallon, depending on whether or not he was going down hill.

My parents lived full time for 10 years in a 27' Holiday Rambler that got about 7 mpg. They also towed a compact car behind them, so when they got to their destination they had cheaper transportation. Dad tracked the mileage quite a bit, as well as their expenses. They found their full time nomadic life to be much cheaper than owning/renting a house, even with the cost of gas. Of course, they were not "If it's Tuesday it Must Be Belgium" kind of people. Instead, they would drive to an area and stay a while, getting to explore/experience it fully.

I lived in an even smaller motor home with them and my brother for a year when I was 12. I would do it again in a heart beat.

IP