* Driving style: Aggressive acceleration and braking consume more fuel.
* Terrain: Driving uphill or in off-road conditions requires more fuel.
* Vehicle load: A heavier truck will use more fuel.
* Fuel economy: The specific engine and configuration of your F-150 affect its fuel efficiency.
* Fuel level sensor accuracy: The sensor itself might have some slight inaccuracy.
While some estimate around 30-50 miles, it's best to consider the low fuel light a warning to refuel soon, rather than a precise mileage indicator. Running completely out of fuel can damage your engine. It's always safer to refuel when the light comes on than to risk running dry.