Fuel tank size on build sheet question

So my build sheet says I have a 32 gallon Fuel tank, but I just let the truck go to the lowest I’ve had it, which was in between E and a 1/4 tank. I just filled it up and it took just over 25 gallons. Does anyone know if we have a reserve? Just trying to understand why, I had 38 miles left until empty.

 

My low fuel light pops on around 28 miles. So there is roughly 4 gallons of "reserve".

I usually get around 500 miles before the low fuel light comes on.

 

There is like 900 threads about this. Every Toyota is this way. I drove my LX570 beyond 0 miles a few weeks back and it still had 4 gallons left in the tank.

 

Ok good to know, thank you! I thought I read something before about this, but I just wanted to confirm it.