I got 74 on my last tank. Still only have about 1500 miles on the scooter. The mileage seems to be creeping up with each tank. I keep track of it on Fuelly.com and my mileage trend is getting better as I get more miles on the bike.
I hope to see a consistent 80 mpg but I am 6'1" 215 lbs so I make a pretty good barn door impression going down the road and may never hit it.