Originally Posted by
Nepharius
Could be worse my old Celica used to have the light go on when you had 1/3 of a tank left, around 200km. Lowest I've gotten it is around 5L left in the tank, don't remember how many km after the light that was though.
I'm pretty sure they have it come on early for 2 reasons.
1 - The sensor they use won't be perfectly accurate (they would also differ car from car to a degree) so I'd suggest they err on the side of caution.
2 - People are stupid. There will be some moron who will run the car dry and then rant and rave about how it said he still had 2km left. Anyone else imagine an American suing?
I honestly wouldn't be too surprised if the ECU had a much more realistic impression of how many km are left and they just offset it a bit.