Have you ever had an inkling that maybe the fuel gauge fell quicker after the needle reached half way? I did, so I did a fully scientific experiment and found out my hunch was true.
Here is what I specifically measured for my car, you mileage may vary :
Fuel Gauge litres between gauge marks
F 0
3/4 17
1/2 14
1/4 13
E 10
No gas 5
So what does this tell me? That the distance between F and 3/4 gives the longest driving distance, and that the distance between 1/4 and E gives the shortest distance. And when it\'s down to E, then the 5 litres left in the tank is really only fumes, because of the saddle shape and shallow shape of bottom of the tank.
It\'s confirmed my thoughts that the fuel runs out quicker at the bottom half of the gauge.