What is the normal RPM when starting a car?

[WalkerMarie]

Starting a car with an RPM between 1200 and 1500 is normal. The engine speed relates to the number of work cycles per unit time or the effective power output of the engine. That is, the effective power of the engine varies with different speeds. When indicating the effective power of the engine, the corresponding speed must also be specified. The effective power and its corresponding speed specified on the engine's product label are referred to as the rated power and rated speed, respectively. The rated power is not the peak power the engine can produce but rather the effective power usage limit set based on the engine's purpose. The peak torque a car engine can output and its corresponding speed serve as an indicator for evaluating the engine's power performance.