While standing at the fuel pump, we often wait for that familiar “click” sound that signals the tank is full. Many drivers stop refueling at that moment, close the cap, and head to pay. However, some still try to “squeeze in” an extra liter by gently pulling the nozzle back. Here are three important reasons why you shouldn’t do that.
It won’t save you money
Drivers often try to fill the tank to the brim because of a good price or before a trip to an area where fuel is more expensive. Sometimes it’s simply done to avoid frequent visits to the gas station. However, extra fuel means extra weight, which can actually increase fuel consumption.
Moreover, as noted by Howstuffworks.com, some gas stations are equipped with vapor recovery systems that prevent fuel spills and tank overfilling. In such cases, part of the extra fuel may be redirected back into the station’s storage tank. So that extra liter not only won’t save you money — it might just be wasted.
You risk damaging your car’s systems
Modern cars are often equipped with vapor recovery systems containing activated carbon filters. These systems are designed to operate optimally when the tank is filled up to the automatic nozzle stop point. If you try to add more fuel, you may accidentally flood the filter, causing damage. Such filters are usually difficult to access, and replacing them can be quite expensive.
In addition, an overfilled tank can increase pressure in the fuel system, potentially exposing weak spots — though this is more related to the vehicle’s technical condition than to behavior at the pump. Still, it’s important to remember that modern fuel tanks are not just containers — they’re complex systems designed for standard refueling methods.
Higher risk of fuel spills
Gasoline that comes into contact with the car’s body can leave yellowish stains, damage the clear coat, or even strip away wax protection. If fuel frequently drips onto painted or plastic surfaces, irreversible cosmetic damage may occur over time. While a single spill, if wiped quickly, won’t cause major harm, regular overfilling can leave lasting marks.
Additionally, gasoline can ruin leather shoes or other items, and if it spills on the ground, it pollutes both the environment and the gas station area. This is not only irresponsible but also harmful.
Conclusion: the first nozzle “click” is the signal that your car doesn’t need any more fuel. Trying to add a few extra drops may do more harm than good.
