Talking metric with just 1000 kms on the bike I am getting about 6.5 litres per 100km thats about half the fuel useage of my V8 5.7 litre with 180,000 kms on the clock. But the bike is far more fun on the winding roads in NZ.
I expect the economy to improve as the motor loosens up. The torque is awsome from 2000rpm up. I use 98 octane fuel when available otherwise 95. As yet I have not given it the full handfull of throttle with occasional trips towards 4500 rpm and cruising at 3-3500.
After over 40 years of riding bikes the 109 is really me, and its so comfortable, and a real looker.
With 2400 miles on the bike I just had back to back inter-state cruising runs of 68 miles on 1.50 gal.......45.3 mpg.............60 to 65mph average speeds.
Just returned from a 80 mile inter-state run......1.68 gal. = 47.6 mpg. This was a steady throttle at 60-65 mph, high humidity and 93 degree temps. Never seen these numbers from my VTX. Best on that bike was 39 mpg.
Now that she's broke in, I'm, averaging right around 40MPG. During break in, it started at 35MPG and worked its way up. Funny thing, it got better as I was able to wind the engine up higher. Anyway, I'm happy yo be getting 40.
I filled the first time yesterday and had about 41 MPG. Part of that was teh first 300 miles, and not going above 4K. Part was grab a handful, hang on, and grin like a virgin in a whorehouse on FREE Wednesday.