Is an Idle Speed of 600 to 700 RPM Normal for a Car?

1 Answers
OEllie
07/29/25 2:55pm
An idle speed of 600 to 700 RPM is not normal for a car; the normal idle speed should be around 800 RPM. Normal Idle Speed: Idle speed refers to the engine running without any load, only overcoming the internal friction resistance of its components, without delivering any external power. The minimum speed required to maintain stable engine operation is called the idle speed, which is one of the five basic operating conditions of an engine. A well-functioning engine typically has an idle speed of around 800 RPM. Causes of Low Idle Speed: There are many reasons for low engine idle speed, such as issues with the idle control valve, carbon buildup in the throttle body, carbon deposits on the valves, clogged intake passages, a blocked air filter, or insufficient fuel injection pressure.
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