Is It Normal for the Fueling Amount to Exceed the Fuel Tank Capacity?

[MaggieRose]

It is normal for the fueling amount to exceed the fuel tank capacity. Below are specific details about automotive fuel tanks: 1. Labeled capacity is the safe volume: Most fuel tanks indicate a safe volume, which is generally about 10% less than the actual capacity. During the design of the fuel tank, considering the thermal expansion and contraction characteristics of fuel, a certain space must be left inside the tank after filling to the rated volume to protect driving safety and prevent excessive internal pressure. Overfilling can damage the carbon canister, while underfilling leaves too much empty space, causing fuel to evaporate and be lost as vapor. 2. The fuel gauge cannot accurately reflect the remaining fuel: One cannot rely solely on the fuel gauge on the car dashboard, as it provides only a qualitative indication rather than a quantitative measurement of the remaining fuel in the tank. The relationship between the fueling amount and the distance traveled cannot be used to judge fuel consumption because road conditions, speed, traffic congestion, air conditioning usage, vehicle load, fuel leakage, and fuel quality all directly affect fuel consumption.