No, you should never leave your car's engine running while pumping gas. It's a significant safety violation at most gas stations and poses a real, albeit small, risk of fire. The primary danger comes from potential ignition sources within your vehicle—such as electrical components, the engine itself, or static electricity—coming into contact with gasoline vapors, which are highly flammable. While modern vehicles and gas pumps have many safety features, turning off the engine is a simple, non-negotiable step to eliminate the most obvious source of risk.
The rule is explicitly posted on warning signs at nearly every fueling station. Violating it could lead to the attendant shutting off the pump, and in some areas, you could even face a fine. The risk isn't just about a catastrophic explosion; a smaller, more likely incident could involve a static spark igniting vapors during the refueling process. An idling engine provides a continuous source of heat and electrical energy that can act as an ignition point.
Beyond the immediate fire hazard, leaving the engine on wastes fuel and contributes to unnecessary emissions right at the pump, which is harmful to the environment and public health. It's also a security risk, making your car an easy target for theft. The correct procedure is simple: turn off the engine, exit the vehicle, and avoid re-entering during fueling to minimize static buildup. This one small action ensures safety for you, everyone at the station, and the property.
| Supporting Data: Gas Station Safety & Ignition Risks |
| :--- | :--- |
| Gasoline Vapor Ignition Temperature | Approximately -45°F (-43°C) – can be ignited by even a small spark |
| NFPA 30A Code | Mandates that vehicle engines be shut off during motor fuel dispensing |
| Static Electricity Discharge | Can generate a spark with energy up to 25 millijoules, enough to ignite vapors |
| Typical Fine for Violation | Can range from $50 to $500 in various municipalities |
| Percentage of Gasoline Fires | A significant number attributed to static discharge and improper fueling practices |
