Is it harmful to directly shift to P gear and turn off the engine when parking?

[OAnastasia]

Directly shifting to P gear and turning off the engine when parking is not harmful. Here are specific details about the P gear: 1. Principle: The P gear is essentially the parking gear. There is a claim that if the car is rear-ended while in P gear, the transmission could be damaged because one of the gears is mechanically locked in place, and the immense impact force could destroy the transmission system. However, experiments have shown that this possibility is very small. The design has already taken this issue into account, and at most, the locking arm might be damaged, without affecting the entire transmission. 2. Purpose: The P gear is a special neutral gear that mechanically locks part of the transmission output shaft to secure the vehicle. Its function is to act as a brake after parking, preventing the vehicle from moving. For practical safety reasons, car manufacturers place the P gear in the first position on the gear shift console and set internal mechanisms to ensure that the car key can only be removed when the gear shift handle is moved to the P gear position. Therefore, the P gear is specifically designed for long-term parking in automatic transmission cars.