Many drivers have the habit of driving on a low fuel level, which can lead to serious consequences for the vehicle and unexpectedly high costs for the owner. Mechanics often warn against this common but risky driving style, because the damage it can cause is not negligible.

When the orange light that signals a low fuel level comes on, it is best to stop at a gas station as soon as possible. The light is not a warning color by chance – ignoring this signal can cause serious damage. Many drivers rely on the trip computer to estimate the remaining range, but this information is often not completely accurate. Continuing to drive even when the range indicator drops to zero can have long-term consequences, especially for drivers who fill up on fuel in small quantities and thus constantly drive on a low fuel level.

What happens when you drive with low fuel?

Your car’s fuel system relies on a fuel pump that is cooled and lubricated by fuel. When the fuel level gets too low, the pump loses the support it needs, which can lead to overheating and accelerated wear. In addition, air in the fuel system can cause additional failures and increase repair costs.

In newer cars, fuel tanks are often smaller, making driving on a reserve even more risky. Damage to the pump can lead to contamination of the tank with small particles that end up in the injection system, damaging the injectors and the injection pump. Repairs of this type can be extremely expensive and require the replacement of multiple components, including cleaning the tank, which can cost thousands of KM.

The best way to avoid potential failures is to regularly top up your fuel, ideally when the needle drops to half a tank. This protects the fuel system and reduces the risk of expensive repairs.
Regularly changing your fuel filter, especially on diesel engines, is essential for the long and reliable operation of your vehicle.

While running on reserve may seem convenient, in the long run it can cause more problems than benefits. Think twice before you decide to ignore your fuel warning light.