Not knowing whether your ride is uphill both ways thru gale force winds carrying 300 lbs. of gold ingots etc., it's kind of hard to say your mileage is good or bad.
But if the bike is still new and in the break-in period, anything around 40-45 mpg. is probably in the ball park.
After it is broken in and if you don't do any mods to it, you can get over 50 mpg. rather consistently with normal riding.
Once you start tinkering and modifying - all bets are off - but you should still be around the 40 mpg. range.
