How much fuel left in my tank?

There is a handy gauge fitted to most modern cars that'll help.

Also, I've done 10+ miles when the DIS says 0 with no problems. It rounds to 5 mile increments, and is based on recent mpg so you can increase it by driving more gingerly. I've started a drive from Edinburgh with 100 miles on the DIS and 150 miles later still have 70 miles on the DIS.
 
I've just done the grandma drive to work as I got home last night with the DIS stating 0, work is 20 miles away and although I did fag out at the shell garage on the way, the garage was 13 miles and I managed to get 54L in. So with what I think is a 60L tank I still could of made it to work but sense suggests if you can fill up just f***in fill up...n use v power :blahblah1::blahblah1: