How Much Fuel Does a Car Consume in One Hour of Idling?

[Cameron]

Under normal idling conditions, a car consumes approximately 1-1.5 liters of fuel per hour. Below are the impacts of car idling: Idling tends to burn engine oil: During idling, the throttle opening is small, and the vacuum level inside the intake manifold is high, making it easy for engine oil vapor to be drawn into the intake manifold. Some of it deposits inside the intake manifold, especially in turbocharged models, where you may find a pool of oil behind the throttle in the intake manifold. However, this oil usually disappears after high-speed driving. Idling tends to cause carbon buildup: During idling, the air-fuel mixture is generally richer. Therefore, prolonged idling with a rich mixture can easily lead to carbon buildup in the engine. Additionally, during stop-and-go driving at low speeds, the engine alternates between enriching and reducing the fuel injection, which also contributes to carbon buildup in the engine.