What is the appropriate idle speed for an automatic transmission?

1 Answers
Corbin
07/29/25 8:03pm
An idle speed of 500 to 850 RPM is appropriate for an automatic transmission, while the instantaneous idle speed during a cold start is around 1500 to 2000 RPM per minute. The characteristics of an automatic transmission car are: 1. Easy to operate, simple to learn, and easy to master driving techniques; 2. High driving comfort with relatively smooth gear shifting; 3. High safety factor, reducing driver fatigue. The gears of an automatic transmission car include: 1. P gear is the parking gear, used for long-term parking of the vehicle; 2. R gear is the reverse gear, engaged when the vehicle needs to move backward; 3. N gear is the neutral gear, engaged when the vehicle is parked for a short time without turning off the engine; 4. S gear is the sport mode, making the vehicle drive more sporty; 5. M gear refers to the manual mode, where the driver manually completes the gear shifting when the gear lever is engaged in M gear.
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