I have a 1998 buick century. The manual, everything I’ve seen online, etc all say the fuel tank capacity is 17 gallons. I have never put more than maybe 14.5gal in the tank. And when I have it has really felt like I was pushing the limit. Usually when I fill up with the ‘E’ light on, it comes out to 12-13gal.
Does anyone know the actual capacity of this car? Is the “E” line just extremely conservative and I actually have a few more gallons left?
You should just refill at the 1/4 mark and what does it matter how much fuel it should hold. It may not do any harm but letting the fuel level get to low can cause damage to the fuel pump . The fuel in your tank acts as a cooling agent for the pump .
I am going to add that I just refuel both vehicles at the 1/2 mark . You never know when storms or just plain supply problems can happen . At least that way I have enough fuel that I don’t have to panic.
Nearly every low fuel light is VERY conservative. GM cars especially. Running out of fuel can easily ruin a fuel pump so the manufacturers don’t want you to run dry.