08 RZR 800 here
On a good day she will get 14 mpg
Last trip of a 103 miles she got 12 mpg
The best fuel mileage my RZR ever got was when it is being towed by my rav4 got 22 mpg
My mo-home that weighs 25,000 pounds towing RZR gets 11 mpg
So my RZR that weighs about 24 times less than mo-home does Not get much better fuel mileage
For as light as she is, one would think that she would get about 75 mpg!!!