I've often wondered about that as well. It appears that the VFR800's mileage is worse than a BMW R1200GS! Surely Honda could've done better.I just noticed that the Honda Interceptor is the #1 bike on Fuelly with 220. Surprising for what is actually a low selling niche bike. Also surprising are the low numbers. Those guys must all hammer the bike to post 40 mpg US. The Interceptor has a V-Tec engine. I would have thought you could get mid 60's.
I suspect this has to do with riding it harder as I got over 300 miles. I used the manuals 300 mile marker, which I arrived at riding below 6500 rpm, with no full throttle. Since that 300 mile marker, I've rode it increasingly harder, now often revving it to the redline in 1-3 gears, sometimes 4th, which it will do, all under full throttle. I'm curious if the valves needs adjusted, & if doing so will increase mileage or performance, or both.My mileage is going down with every fill up. My last fill up netted me 60 mpg. I'm averaging 66. It is due for its 600 mile service & I'll be taking it in Monday or Tuesday.
The valve clearance is due to be checked. I doubt it is off more than a few thousandths which won't change the fuel economy. 60 mpg US is about right for full on hammering.I'm curious if the valves needs adjusted, & if doing so will increase mileage or performance, or both.