I’m seeing more and more people filling up their vehicles without shutting them off first.
My dad was a chemical engineer and instructed me to always shut off an internal combustion engine while fueling.
He said the risk is very small, but flame ignition outside the vehicle can happen while fueling.
He also suggested not using hand held electrical devices when at a gas station.

He worked for CalTex , then Bahrain State Oil, then Dutch Shell. He knew the statistics on fires at fueling stations. He said the statistics were significantly higher in female drivers….more likely to keep the car running and using hand held electrical devices while pumping.

Never ever leave it running

Shutting off vehichle is more a 3rd world thing

Here in the USA I always leave my car running

When I am in third world countries they make me shut off engine and they have gas attendants.

tell it to race car drivers

My motor ran 24/7 in my 20's.

Always... Why burn fuel while adding fuel... Plus I've got a 48 gallon tank and it takes a while... Dan

I never turn off the engine while gassing up. Likewise, my head is on a swivel watching what is going on around me, even in my neck of the woods which is relatively benign crime wise.

As a former fuels specialist, we were taught to always turn off engines when refueling.

Yes. We’ve all seen fires in the pits when the race cars are being refueled. It happens.

I always turn my off, just like my dad told me in 1960.

Yet airplanes are re-fueled in flight.

The O2 level in the atmosphere at high altitude minimizes the risk to almost zero.

usually turn my engine off unless it's really cold and I jump[ back in vehicle to stay warm while it's filling up....some convenience store pumps are really slow...
am told to be very careful if you stop to get gas at a convenience store in Atlanta area...lot of people being robbed or car jacked....suspect this is true in most of our large cities especially at night....

Always off