When entering data into the mileage database, it would be nice if there were a checkbox that indicates whether or not the low-fuel alarm went off before the user filled up the tank. This way we can see whether or not a given tank really was a full tank or was just refilled early, and tanks without the checkbox clicked won't be counted in the "average miles per tank" calculation.

That would be useful to me because I've seen alot of Priuses refilled at 9 gallons or less, so they go 400 miles even with 50+ mpg, and I have no idea if they just refueled early or if 400 miles really was the furthest they could go on the tank (due to its variable bladder).

It can just look like "[ ] Did the low-fuel light go on before you got gas?"