Picked up my new Tenere yesterday ( ), got through two tanks of fuel so far - or so the fuel guage would have me believe....

the owners manual says when there is one segment (of six) left on the display to 'refill as soon as possible'. So this morning after 30 miles of ridng with only one segment left i refilled - and only managed to get 15L in my 22L tank. This afternoon following another 170 miles my guage said i was empty again so i refilled (already suspicious by this point) to find that i could only squeeze 13L in the tank - i had not far off half a tank left!

as you might have guessed, my question is - is it just my fuel guage which is crap or are they all like that? a shame if they are all bad as it occupies quite a bit of space on the display and if i end up using my trip meter to guage the fuel then its a right waste of space.