This term if often used to refer to when a car is left running when parked. There maybe drawbacks to idling an engine, but permanent damage? No, not really. Most engines are engineered to idle pretty much 100% for long periods of time to keep accessories like air conditioning, lights and other electronics in the car working. Although there are certain things you need to know.

Please follow the link below to read more:
https://www.spotdem.com/2022/07/26/does-idling-a-car-damage-it/