What is the normal idle speed for a sedan?

[VanMax]

The normal idle speed for a sedan is generally between 700-900 RPM. Idle speed refers to the operation of the engine under no load, where it only needs to overcome the internal friction resistance of its components without delivering any external power. The minimum stable engine speed under these conditions is referred to as the idle speed. The idle speed can be adjusted by modifying the throttle opening size, and the optimal idle speed is the lowest RPM at which the engine does not vibrate. Effects of low idle speed: 1. If the idle speed is too low, the engine may stall when decelerating or stopping. 2. Low idle speed affects gear shifting. Many cars still use manual transmissions, and if the idle speed is too low, gear engagement during shifting becomes more difficult, leading to less smooth operation and increased risk of gear collision and component wear. 3. During acceleration, low idle speed may result in insufficient power, preventing the car from performing optimally.