Why Should the Engine Be Turned Off Before Refueling a Car?

[LaAdelyn]

The reasons for turning off the engine before refueling a car are: 1. When the engine is not turned off, the engine and other instruments are in operation. Gasoline is an electrolyte, which can easily cause instrument leakage, leading to short circuits or open circuits in the wiring; 2. The exhaust pipe continuously emits exhaust gases, which may carry sparks, creating potential safety hazards; 3. Operating instruments generate a large amount of heat, accelerating the volatilization of gasoline. The concentration of gasoline-air mixture increases and is difficult to disperse, making it prone to ignition and explosion. The correct steps for refueling a car are: 1. Slow down and drive into the gas station at a reduced speed, and drive out at a low speed after refueling; 2. Turn off the engine before refueling; 3. After filling up, close the fuel nozzle before starting the car.

[Philip]

Having driven for a lifetime, I deeply understand the necessity of turning off the engine while refueling. A running engine emits heat and potential sparks, while gasoline vapor is highly flammable. Just a momentary static electricity or electrical spark can trigger a fire or explosion. I remember once at a gas station, a young man nearby started refueling without turning off the engine. Fortunately, I reminded him, or the risk would have been too great. This isn't just about personal safety; other vehicles and pedestrians nearby are also at risk. After making it a habit, I found it also reduces unnecessary engine wear and emission pollution, contributing a bit to the environment. In short, turning off the engine while refueling is basic driving knowledge and shouldn't be ignored for convenience. Before starting every time, I confirm the engine is off to protect myself and others.

[FrankMarie]

I've studied automotive technology for several years, and the science behind refueling with the engine off is straightforward: while the engine is running, the ignition coil or electrical system can generate sparks. Even a tiny arc coming into contact with gasoline vapors can ignite instantly. The battery stores significant energy, and despite modern vehicles having protective measures, the risk still exists. Leaving the engine on may also overload the fuel pump or wiring, increasing maintenance costs. I often explain to friends that safety comes first—don’t underestimate the risks just because idling seems harmless. Following this rule also keeps the gas station environment quiet and comfortable, reducing noise pollution and enhancing the overall experience.

[TuckerFitz]

For us homemakers driving out, safety is the top priority. Always turn off the engine when refueling to avoid accidents caused by engine noise and heat. Refueling with the engine running risks the car moving if your hand slips, which could hurt someone or cause a fire. I’m extra careful when the kids are in the backseat, always teaching them to follow the rules—life’s details reveal true character. The gas station signs reminding us to turn off the engine aren’t just rules; they’re a responsibility to care for others. A simple action brings peace of mind, so I always take a deep breath to confirm before every step.

[DamianRose]

As a parent, I've taught my child from an early age to turn off the engine while refueling: a running engine can create ignition sources that may easily ignite fuel vapors near the tank; if the fuel nozzle shakes or the car suddenly moves forward while the engine is running, the consequences could be disastrous. Gas station regulations aren't empty words—they're written in blood and tears. I also remind myself to check the fuel tank cap's seal to prevent leaks. After developing this habit, I've noticed I drive more attentively and the environment stays cleaner. Small precautions keep major disasters at bay.