I haven't had to put fuel in it yet since it came full from the dealer. Not sure how 'topped off' it was, but the dash screen is telling me 11.9 average for the first 250 miles. I haven't been nice to it since I like the sound it makes when I hold the throttle down for a while, so the 11.9 seems reasonable. I expected 12. I am only dissapointed by 0.1 mpg. I'll take it!