40-45 miles, depending on how I run it. If you rip it into high RPM's all the time, closer to 30 I expect. I'm usually cruising at 55-60 in top gear when it comes on so I'm averaging over 50mpg at that point.
45 was as long as I ever pushed it before wussing out. My lazy gene overwhelmed me when I couldn't hear gas sloshing in the tank anymore.