We get anywhere from 7 to 9 with our 31' C depending on the road conditions and whether we are towing or not. Lots of up hill it might drop to 6.5 even. We cruise at 62-63 trying to maximize mileage.
Dave
2005 Winnebago-Itasca Sundancer 31C
2010 Harley-Davidson Soft tail Deluxe
2014 Harley-Davidson Street Glide Special
1999 Chevrolet Tracker 4X4
SKP # 121272