How much fuel does a car consume when idling with the AC on for one hour?

1 Answers
DeCaleb
07/29/25 3:36pm
When a car idles with the AC on, it consumes approximately 1 liter of fuel per hour. There are many hazards associated with idling with the AC on. Idling with the AC on damages the car: Idling with the AC on causes incomplete combustion in the engine, increasing carbon deposits inside the engine. If the AC is left on while idling for an extended period, people inside the car may also experience carbon monoxide poisoning, which is very dangerous. Idling with the AC on can lead to incomplete fuel combustion: When a car idles (vehicle parked without pressing the accelerator), the fuel reacts with oxygen in the air but burns incompletely, producing more exhaust gases containing carbon monoxide. To save energy, drivers often close all windows and doors after turning on the AC.
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