2009 Kawasaki Vulcan 900: 45 mpg, though has been 50-55 on my last 2 fillups because of a 50 mile each way commute
2011 Hyosung GV250: Never below 60 mpg, roughly the same commute I do on the Vulcan, though soon to be replaced by a larger bike
2000 Chevy Cavalier 2.2L/4 speed auto: 25 mpg, has not been filled up in a few weeks due to taking the bike everywhere
1999 Chevy Cavalier 2.2L/3 speed auto: 24 mpg over the last ~1,000 miles, all freeway at 55-60 mph, towing a trailer