Is an engine idle speed of 800 RPM normal?

1 Answers
DiKatherine
07/29/25 3:39pm
An engine idle speed of 800 RPM with stable operation is generally considered normal. However, if the engine exhibits instability or severe vibration at 800 RPM, it indicates an abnormal condition. Below is an introduction to idle states: Normal idle: When the vehicle is in a parked state and the engine is started, the minimum stable operating speed of the engine is referred to as parking idle (the process during which the engine transitions from cold idle state to reaching normal operating temperature idle state is called warm-up or hot running). Driving idle: During gear shifting, when the accelerator pedal is not depressed or is released while driving, maintaining the minimum throttle opening, the engine speed matches the parking idle speed. This state is called driving idle. Unstable idle: Unstable idle is one of the most common issues encountered in engine maintenance. If the diagnostic approach is incorrect, it may prolong repair time, reduce work efficiency, or even cause the vehicle owner to switch to another repair shop due to impatience.
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