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I did 105.6 on a stock CBR250R in the Ohio 2012 Vetter challenge with a 100 liter duffel bag on the back full of 50 pounds of camping gear. I was averaging 93 on my fast highway commute. The next year I took the 2009 Ninja250 with a similar luggage set up though most of it was unloaded, and got 87 mpg. Normally 73 on the highway. Last year at Ohio the CBR250R was back and with a truncated tail but still no nose. I got 117 mpg. The new Michelin Pilot street tires I took off of the R3 are way more fuel efficient the the Bridgstone S20evo that replaced them and seem to be about 10% better than the IRC that came off the CBR 31,000 miles front and 16,000 rear). so I hope to be closer to 130 this year if the weather is better. It was raining last year. My last 5 tanks on the commute have been around 115 real world.
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Keep in mind that there is alway some fill error and maybe some "wishfull filling" during competitions and the top guys are using only about 1 gallon so any error can make a difference. I would like to see the fills become "observed" as there was one competitor that was actually seen dumping in from a soda bottle at the museum stop.
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Though because of the fill plate in my bike and actually seeing the fuel I can get fills with .005 gallon acuracy when I want. Which is every time. Fuel logs for regular commuting are much more useful to see what any bike really gets. It seems most people don't use a log even though they talk about high competition results. My stock CBR250R with no mods other than a +15% gearing change got 135 mpgUS on the track at Watkins Glen for the Green Grand Prix fuel economy challenge. Twice.
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