Kinda depends - my R1200GS would get around 55mpg (Imperial 4.55l gallons, not the smaller US gallons) when riding gently. My 411cc Himalayan is up around the 100mpg mark . 125s are easy to get well over 100mpg with, so the scale is probably fairly linear modified by tune and riding style.
Kinda depends - my R1200GS would get around 55mpg (Imperial 4.55l gallons, not the smaller US gallons) when riding gently. My 411cc Himalayan is up around the 100mpg mark . 125s are easy to get well over 100mpg with, so the scale is probably fairly linear modified by tune and riding style.