Wow our calibrations on the bar graph must be way different. I overfilled the tank as the pump originally kicked off at 10.2 gallons and I nursed it up to 10.8, but there were still 2 bars left on the display. I assume that the low gas alarm light comes on when you hit the last bar segment that is colored red on the display? Can somebody please confirm? Also has anybody ever pushed the car until it took slightly over 12 gallons? Does the tank really have 12.4 gallons until dead empty?