Don't start me on fuel gauges.
I wish they'd have the option at least of displaying how many litres of fuel are actually in the tank, especially on motorbikes.
The Honda NC bikes started off with bars on an LCD screen which went down then the last one flashed, however there was no telling how long it had been flashing for if you hadn't spotted it, and there was actually about 1/4 of the tank still remaining when it began so you didn't want to refuel for a while in order to get a decent range.
The next generation had a display which began to count up how much (litres/gallons selectable) had been used after the flashing started, but it didn't actually tell you how much was left, you had to work that out yourself based on knowing how much was left when the flashing/count-up started.
FFS, why not just display how many litres are actually in the tank, that's all I want to know.
.......... and breathe ............