Hi I am new to this site, i have had my RS-S for six weeks now & i have noticed that just over 220 kilometers the fuel gauge is on the last bar & the red fuel light comes on, when i fill up the tank i only get 17 to 18 litres back in meaning there is still 9 or 10 still in there, is this normal for the red light to come on when there is still that much fuel left in the tank.