here is a list of the bikes i have owned over the years and about what they got for fuel mileage.
1) 1977 kawasaki kz650: about 35-40 mpg
2) 2001 yamaha vstar 650: about 50 mpg
3) 1974 harley davidson sportster: about 35 mpg
4) 1985 honda magna 750: about 40-45 mpg
5) 1967 honda dream 305: (dont know, never got it running
)
6) 2004 suzuki katana 750: about 35-40 mpg
7) 2002 yamaha virago 250: about 75 mpg
8) 2009 yamaha c3: about 100 mpg
9) 2009 yamaha zuma 125: about 85-90 mpg
10) 2009 honda rebel 250: about 65-70 mpg
11) 2009 kawasaki vulcan 500: about 50-60 mpg (current bike)
ya know, out of all these, i think the zuma 125 is the one i miss the most. that thing was just fun to ride. had pretty good get-up too. i am planning on doing a couple of things to my vulcan, but not much. i will probably change gearing a little, and maybe slightly re-tune it. oh well, there is my list.