I filled up my 08 CR-V after the fuel light came on when there was only 1 fuel gauge bar remaining. The info screen's estimated mileage remaining was 18 miles. It only took 12.7 gallons to fill up, which meant that 2.6 gallons were left. Now, even if the pump shuts off before completely being filled up, there would be at least about 2 gallons remaining, which is enough to drive quite a bit farther than 18 miles.
How far can one realistically drive in the city after the fuel gauge shows one bar remaining? And does it completely stall after the one fuel gauge bar disappears? I know that Honda's fuel gauges are notoriously pessimistic so that you won't stall your car too often (my 96 civic did the same thing), but being that the tank is already smaller than most of the competition, I would like to fill it up with a little bit less than 2 gallons remaining.