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What is the appropriate RPM for an automatic transmission car?

2 Answers

Brian

07/24/25 8:42am

Automatic transmission cars are suitable at 1800 to 2000 RPM. RPM refers to the number of revolutions per minute of the engine crankshaft. The engine RPM affects the number of power strokes per unit time or the effective power output of the engine. The correct starting sequence for an automatic transmission car is: 1. Press the brake; 2. Release the handbrake; 3. Shift to D gear; 4. Release the brake; 5. Press the accelerator. The correct method for parking an automatic transmission car is: 1. After reaching the parking position, hold the brake until the vehicle comes to a complete stop; 2. Shift the gear lever to N gear, keeping the brake pressed; 3. Engage the handbrake and release the foot brake; 4. Wait until the vehicle is completely stationary, press the brake again, shift to P gear, and then exit the vehicle and lock it.

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TravisFitz

08/11/25 4:15am

I've been driving automatic transmission cars for almost ten years, and usually maintaining the RPM between 1500 and 2500 is most suitable. For city commuting, gently pressing the accelerator to just over 2000 RPM allows for a smooth start—no need to suddenly floor it above 3000 RPM. On highways, cruising at around 2500 RPM is quite fuel-efficient. Too low, like 1200 RPM, might not provide enough power, while too high, like 3000 RPM, wastes fuel and strains the engine. Different cars, such as my sedan and SUV, don’t differ much—this range is generally comfortable and economical. Occasionally, briefly revving up to 3000 RPM when climbing a slope is fine, but avoid prolonged high revs. Developing the habit of checking the tachometer helps avoid potential issues and makes driving easier and safer, after all, your car is a partner, not just a machine. Paying attention to these small details regularly benefits maintenance and extends its lifespan.

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