What is the ideal starting RPM for an automatic transmission car?

[BethanyDella]

For automatic transmission cars, the recommended engine RPM during startup is between 1200 to 1500 rpm. Since automatic vehicles have an inherent idle speed, it's acceptable as long as the RPM doesn't exceed 2000 during startup. When starting an automatic vehicle, particularly for heavier models that require more torque to overcome inertia, the 'fixed throttle' method is advisable: after engaging the clutch and shifting gears, gently press the accelerator to stabilize the engine RPM around 1500 rpm. Then, gradually release the clutch using the 'fast, pause, slow' technique. This method ensures a smoother and more powerful start with reduced noise. During gear shifting in an automatic vehicle, shift to 2nd gear when the speed reaches 20 km/h and the RPM is between 1500-2000 rpm. Shift to 3rd gear when the RPM exceeds 2000 rpm, 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 rpm. For new automatic cars in the initial break-in period, it's best not to exceed 2200 rpm. During the mid break-in period, keep RPM below 3000 rpm, and it's also recommended not to exceed 3000 rpm in the later break-in phase.