Is It Harmful to Leave the Car Running for a Whole Day?

[LeDelilah]

Leaving the vehicle in an idling state for an extended period can indeed be quite harmful. When the engine remains idling for a long time, it may lead to unstable idling, which can affect the engine's power performance. Additionally, the engine consumes fuel while running. In an idling state, the throttle opening is very small, and prolonged idling can cause carbon buildup, clogging internal pipes and components of the car. Due to the low temperature and pressure inside the cylinders, the sealing efficiency of the cylinders decreases. Over time, prolonged idling can produce knocking sounds from the cylinders, shortening the engine's lifespan. Modern vehicles are equipped with an increasing number of electronic components, all of which consume a significant amount of power. Even when some functions are not in use, these components remain connected and continue to draw power when the vehicle is running.