Fuel pump damage: The fuel pump in your car relies on gasoline to lubricate it and keep it cool. When the fuel level is low, the fuel pump has to work harder to draw fuel from the tank, which can cause it to overheat and fail prematurely.
Engine damage: Running your car on low fuel can also lead to engine damage. When the fuel level is low, the fuel mixture becomes leaner, which can cause the engine to run hotter and less efficiently. This can lead to premature wear and tear on the engine components, such as the pistons, rings, and bearings.
Stalling: If you run your car completely out of gas, it will stall and you will be stranded. This can be especially dangerous if you are driving in a remote area or during inclement weather.
Towing costs: If you run out of gas, you will have to have your car towed to a gas station. This can cost you money and inconvenience.
It is generally recommended to keep your fuel tank at least one-quarter full to avoid these potential problems.