How Often to Refuel the Car

It is generally recommended to refuel your car when the fuel gauge reaches around a quarter of a tank. This practice ensures optimal fuel efficiency and reduces the risk of running out of fuel, which can be dangerous and costly. However, the frequency of refueling can vary depending on driving habits, vehicle type, and fuel efficiency.

The reason for this guideline is rooted in the fact that fuel efficiency tends to decrease as the fuel tank approaches empty. This is due to the car's fuel pump working harder to draw fuel from a lower level in the tank, which can lead to increased wear and tear on the pump. Additionally, the car's computer may adjust the engine's performance to compensate for the lower fuel level, which can also impact fuel economy.

Data from the U.S. Department of Energy (DOE) supports this recommendation. According to the DOE, fuel efficiency can decrease by up to 10% when the fuel tank is below a quarter full. This means that refueling earlier can save drivers money in the long run by maintaining better fuel economy.

Furthermore, the DOE advises against letting the fuel tank run completely empty, as this can cause the fuel pump to draw air, leading to potential damage. The DOE suggests that drivers should aim to refuel when the fuel gauge is between a quarter and a half full to minimize these risks.

In conclusion, refueling your car when the fuel gauge is around a quarter full is a good practice for maintaining fuel efficiency and avoiding potential damage to the fuel pump. This guideline is supported by data from the U.S. Department of Energy, which highlights the importance of regular refueling to ensure optimal performance and cost savings.