I would usually expect to get around 20 kpl on the open road, average speed 110km/h. More sporting use goes to between 16 and 18kpl. Most I have fitted in the tank while it was still going was 27 litres, total capacity supposedly 28 litres. This is filled o the sidestand. My fuel light has never worked, but it drops juts below the first white line at between 100 and 150kms, half way is actually 14 litres used, last white line is 20 litres used. Once it gets to the red I try and remember when it first entered there to avoid pushing. Only really an isue when I ride by myself, as other bikes have to stop so often, mostly twice to my once. Travelling with another ST11 is so much better to get places 