Hmmm, is your Golf one of the last Mk4's to be made?? I have a 1.8 T GTI (2001 150bhp) and mine does not give miles till empty, it just says PLEASE REFUEL. I belive that once this comes up if driven about 35-40mpg (which is a challenge but manageable) you should get about 30-35 miles out of the tank...any ideas???