O.K. When out riding I don't possy foot around.
I set the trip meter to Zero when I fill up.
The next time I fill up I check the mileage, this afternoon for example, out blasting around some of the afternoon, I did 202.6Kms, filled the tank to the same point as always, 16.3 Liters.
So 202.6Km's is 126.62 Miles.
16.3 Liters is 3.58 Imperial Gallons, or 4.03 US Gallons
That is close enough to 35 MPG (Imperial) 31.4 MPG (US)
When just cruising I will often achieve more than 45MPG (Imperial)