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What is the starting RPM for an automatic transmission car?

1 Answers

IvanLee

07/30/25 3:02am

For an automatic transmission car, an engine speed of 1200 to 1500 RPM is appropriate when starting. Since automatic cars already have an idle speed, it's sufficient to keep the RPM below 2000 when starting. When starting an automatic vehicle, especially for heavier models that require more torque to overcome inertia, the 'fixed throttle' method can be used: after engaging the clutch and shifting gears, slightly press the accelerator to stabilize the engine speed around 1500 RPM before gradually releasing the clutch using the 'fast, pause, slow' technique. This method ensures a smoother and more powerful start with reduced noise. When shifting gears in an automatic vehicle, shift to 2nd gear when the speed reaches 20 km/h and the RPM is between 1500-2000. Shift to 3rd gear when the RPM exceeds 2000, which typically corresponds to a speed near 30 km/h. Similarly, shift to 4th gear at 50 km/h. Shifting at 2000 RPM can lead to carbon buildup, so the fuel-efficient RPM range is 1500-2000. For a new automatic car during the initial break-in period, it's advisable not to exceed 2200 RPM. During the mid break-in period, keep the RPM below 3000, and it's also recommended not to exceed 3000 RPM in the later break-in stages.

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