Roughly 3500 miles on
stock exhaust, windscreen
tail bag only, never any other bags
rider: 5'10", 175lbs
I have averaged 50mpg for the last 3000 miles across a wide range of riding conditions from serious dirt (where I am slow) to twisty pavement (where I'm not). I live at 7000ft & often ride higher. I don't think the bike's been ridden below 6Kft yet in fact.
I've had no issues with the onboard computer. It seems close enough to be useful, and has so far been consistent (ie: reliable)