Should an automatic transmission car be turned off before shifting to P gear or shifted to P gear before turning off?

[ODeclan]

For an automatic transmission car, the correct procedure is to turn off the engine before shifting to P gear. Here are the details: The correct way to turn off the engine is to first bring the car to a complete stop, then shift the gear to N, engage the handbrake, turn off the engine, and finally shift to P gear. The correct steps to start an automatic transmission car are: press the brake - engage the handbrake - ignite (do not directly shift to D gear; shift to N gear first, then ignite, and then shift from N to D) - release the handbrake - release the foot brake - press the accelerator - start moving. P gear: The structure of P gear is relatively simple, with a pawl next to the gear on the output shaft. When the gear is shifted to P, the pawl grabs the gear, thereby locking the output shaft.

[MacCassandra]

I often delve into car knowledge, and when parking an automatic transmission vehicle, you should shift to P (Park) before turning off the engine. This is because the P gear locks the transmission, preventing the vehicle from moving after the engine is turned off, which could cause impact. If you turn off the engine first and then shift to P, the car might roll on a slope, putting pressure on the gears and causing long-term wear to the transmission, which can be expensive to repair. The correct steps are: after stopping, press the brake, shift to N (Neutral), engage the handbrake to ensure it's secure, then release the foot brake to check if the car remains stationary, and finally shift to P and turn off the engine. This habit is simple to develop and helps protect car components and extend their lifespan in daily driving, especially on rainy days or slopes. I've seen friends mishandle this, and their transmissions failed in less than a year. I recommend everyone pay attention to this detail.