Fuel economy report: 30 mpg - 50 mpg
2011 Wee with 9,000 miles at start on a 2,000 mile trip over 4 days, from 600' to 8,700' above sea level in TX, NM, AZ.
Ambient temps ranged from 60F to 90F, usually closer to the higher end.
Single Rider + gear ~ 250 lbs total, top box but no panniers.
Givi engine guards. Suzuki touring windshield.
Everything stock mechanically.
Varied octane from 87 to 93 at different fill-ups, didn't seem to impact economy.
Climbing / descending or altitude didn't seem to have a noticeable impact on fuel economy.
The thing that mattered most was bike/engine speed.
At 7,200 rpm in top gear (90 mph gps, 98 indicated) - 30 mpg
At 6,200 rpm in top gear (74 mph gps, 80 indicated) - 45 mpg
5,500 - 6,000 rpm (under 70 mph gps, 75 indicated) - 48-50 mpg
Overall trip average was 43.7 mpg.