Subaru Impreza Hx20S 1996
It doesn't have a fuel light, but when it reads E for empty the tank takes about 45L to fill. I haven't been able to find the capacity of the tank anywhere...
Your tank holds approx. 26.4 gallons. Subaru recommends filling it when the light comes on. They have a number to call when you are uncertain as to how much fuel you have left in your tank. They have a transponder in the tank that relays the info. to a tech in Kenya. They can also tell if you are pregnant and when the child is due.