* Driving style: Aggressive driving consumes fuel faster.
* Terrain: Driving uphill or off-road uses more fuel.
* Vehicle condition: A poorly tuned engine will use more fuel.
* Fuel gauge accuracy: Fuel gauges aren't perfectly precise.
Generally, when the low fuel light comes on, you have between 1-2 gallons of fuel remaining. It's best to refuel as soon as practical to avoid running out of gas. Don't rely on the light to give you a precise amount; it's a warning, not a precise fuel level indicator.