Honestly i never used my trip computer before.. just lately.. it happened to show me 17 gallons / mile (than i got interested).. when i got to the highway it was at 40, but i only drove on the highway for like 10 mins heheh.. it goes up and down like stocks =P but it was annoying.. cuz when the yellow light blinks (onthe empty fuel gauge) the trip will flash "fuel fuel" why doesn't it keep showing the amount of fuel in your tank still? is it down to reserve?