How much fuel does a car consume when idling for one hour?

[OElijah]

Based on the current average vehicle displacement of 1.5-1.8 liters, the fuel consumption during idling is approximately 1-2 liters per hour. Additionally, if the air conditioning is turned on during summer, the fuel consumption during idling will be even higher. Generally, gasoline vehicles idle at around 800 RPM, while diesel vehicles idle at around 500 RPM. The higher the vehicle's displacement, the more fuel it consumes per hour while idling. Relevant information about idling is as follows: 1. Introduction: Idling is a working condition of a car, referring to the engine running in neutral. The engine speed during idling is called the idle speed. The idle speed can be adjusted by modifying the throttle size, among other methods. Idling means the engine is "working but not performing labor." 2. Normal idling: When the vehicle is in a parked state and the engine is started, the minimum stable engine speed is called parking idle speed (the process of the engine transitioning from a cold idle state to an idle state at normal operating temperature is called warming up or heating up the engine).