* Driving style: Aggressive acceleration and braking will use more fuel, reducing your range.
* Terrain: Driving uphill or in stop-and-go traffic consumes more fuel than cruising on a flat highway.
* Vehicle condition: A poorly maintained engine may have lower fuel efficiency.
* Fuel remaining in the tank: The amount of fuel left when the light comes on varies slightly between vehicles and even from fill-up to fill-up. The light is designed to illuminate when a predetermined amount of fuel remains, usually enough for about 20-50 miles.
It's generally recommended to refuel as soon as the gas light comes on. Running your vehicle completely out of gas can damage the fuel pump.
Instead of trying to guess, pay attention to your fuel gauge and plan your refueling stops accordingly. It's better to be safe than sorry.
