Why Shouldn't You Fill Up a New Car's Fuel Tank Completely?

1 Answers
Garrett
07/29/25 6:50pm
Taking a 60-liter fuel tank as an example, it can actually hold up to 75 liters. Automobile manufacturers indicate the tank capacity as 60 liters to account for the fuel expansion coefficient. It is more reasonable to keep the fuel volume below 60 liters, allowing sufficient space for fuel expansion due to temperature increases and ensuring the safety of the fuel tank during use. Here are some additional considerations for refueling: The fuel pump is located inside the tank and operates at high temperatures during continuous use. Submerging the fuel pump in fuel helps to cool it effectively. When the fuel warning light comes on, it indicates that the fuel level has dropped below the fuel pump. Consistently waiting until the light comes on before refueling can shorten the fuel pump's lifespan. Keeping the fuel level too low or running out of fuel entirely may cause the fuel pump to overheat. Vehicles that have traveled over 30,000 kilometers should be especially cautious. If the fuel level is too low, the fuel pump may draw in sediment from the bottom of the tank, leading to blockages in the fuel pump or fuel lines.
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