MPG varies depending on several factors. The RIG below is a Damon Intruder 377W they call it 37' I call it 38, 8.1L workhorse
I"ve seen 6 or less (headwind) and I've seen 13.8 (Ok so the tumble weeds were passing me doing about 100 MPH, I'm not kidding that was one 7734 of tail wind)
Normally about 8 Fresh wax job and no towed I hit 11
The freshness of the wax job seems to make a big difference.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times