Why Turn off Engine While Fueling?

While there is a minimal chance of a fire occurring, leaving the engine running increases the chance of gas vapors igniting if they come in contact with static electricity. ... “The fire risk is that the fumes burn, not the liquid. This could lead to an explosion.” So before you fuel up, shut off the car and leave it off.

Why should you turn off the engine when pumping gas?

When you pull into a gas station, there's usually a sign on the pump you can't miss -- "Turn off engine, no smoking, discharge your static electricity." ... "All that's dangerous with the engine running and the static electricity, those are very dangerous things that can cause fire or potential for a fire," said Thomas.

Do you have to turn off engine when fueling?

Don't Leave the Engine Running

Make sure you put your vehicle in park and turn the engine off before pumping gas. You should also switch off any auxiliary 12-volt power sources such as phone chargers and cigarette lighters because, while rare, they can be a potential igniter of a fuel fire.