no, its not leaking, and jes the sender is messed up. but when the reserve lits up i know im close to the end (once i thought it was wrong so i ran out of fuel in the middle of the night

), and i know it only takes in about 10-13l cos the counter on the petrol station says so... this is really puzzling... :

:
but since i never go long-distance, this really isnt such a prob...
btw, how much does 1L of fuel cost in the UK?