What is the correct way to shift gears in an automatic transmission car?

[Haymitch]

Automatic transmission cars typically have gear positions such as P (Park), N (Neutral), D (Drive), R (Reverse), S (Sport), and L (Low). Except for freely switching between D and S gears, shifting between other gear positions requires pressing the brake pedal first before changing gears. Starting the car: To start the car, first press the brake, shift to D gear, release the handbrake, and gently press the accelerator. Once the car gains sufficient power, release the brake. Descending a slope: Shift to 3rd or 2nd gear to control the speed using engine braking, reducing the need to frequently press the brake pedal. Usage of L gear: This gear is useful when driving on slippery roads or in heavy traffic. When driving slowly in D gear, frequent gear shifts may occur, increasing fuel consumption and wear. Shifting to L gear can effectively prevent these issues.

[FelixMarie]

As an ordinary person who has driven automatic transmission cars for several years, I believe the most crucial step in gear shifting is remembering to 'press the brake.' Before starting the car each time, I firmly press the brake pedal to ensure the car doesn't move before starting the engine—usually, I just turn the key directly from P (Park) mode. Then, to drive, I shift to D (Drive) mode, but before shifting, I make sure the brake is fully pressed and don't rush to release it. If I need to reverse, I shift to R (Reverse) mode, also controlling it with the brake. At traffic lights, if the wait is long, I shift to N (Neutral) to save some fuel, and I never forget to engage the handbrake. After parking, I first firmly pull the handbrake before shifting to P (Park) mode to avoid putting pressure on the transmission. These small habits not only protect the car but also save on repair costs—my car has over 30,000 kilometers on it without any major transmission repairs. In short, developing good habits makes driving much smoother.

[DiTravis]

When I first learned to drive, I was particularly nervous about shifting gears. But my instructor taught me step by step: always prioritize safety first, keep your foot on the brake when getting in the car, and only start the car in P (Park) after confirming it's completely stopped. Before shifting gears, you must press the brake pedal firmly—for example, when shifting from P to D (Drive) or R (Reverse). If you don't press the brake at that moment, the car might lurch or damage the gears. I once experienced this firsthand when I accidentally didn’t press the brake hard enough, causing the car to jerk suddenly and nearly hit the curb. Since then, I always remind myself to press firmly. Shifting to N (Neutral) at traffic lights can save fuel, but when resuming driving, you must press the brake and shift back to D. When parking on a slope, engage the handbrake first before shifting to P to prevent rolling. After developing these habits, I’ve gained more confidence in driving, and my accident rate has dropped.

[McHope]

After driving for over a decade, I've accumulated some practical tips: Always press the brake before shifting gears—this is fundamental. Start the engine in P gear, keep your foot on the brake when shifting to D or R gear. Whether reversing or moving forward, it's smooth. Shift to N gear at red lights to save some fuel, but don't forget to engage the handbrake; after starting, gently press the accelerator to let the car move slowly, protecting the transmission. These small techniques make driving smoother, and my car's fuel consumption has dropped by 10%. The key takeaway is this one sentence: The brake controls all gear-shifting operations.

[OTravis]

I have some interest in automotive mechanics and understand the principle behind gear shifting: an automatic transmission requires a brake signal to unlock the gears, preventing accidental damage. When I drive, I always press the brake first to start from P (Park), and when shifting gears, such as from P to D (Drive) or R (Reverse), I press the brake firmly to transmit the signal, ensuring smooth gear engagement. Forcing a shift can easily damage the transmission—I've seen a friend's car require major repairs costing thousands due to this. When parking on a slope, engage the handbrake before shifting to P to reduce gear load; shifting to N (Neutral) saves fuel while idling but avoid coasting in neutral. This protects the vehicle's mechanical components and extends its lifespan.

[LeReid]

While learning to drive, I noticed common mistakes beginners make with gear shifting: shifting without pressing the brake, causing the car to lurch forward dangerously; or parking on a slope and directly shifting to P gear, risking transmission damage from rolling. After correcting these, my routine became: stepping on the brake without moving when getting in the car, starting in P gear; always firmly pressing the brake before shifting to D or R gear; when parking, first pulling the handbrake, then gently shifting to P gear. For long stops at traffic lights, shifting to N gear saves fuel. These small steps help avoid mistakes, making daily driving safer. Now, whether driving in the city or on highways, I follow these practices, leading to fewer issues and more safety.