What is the reason for the slight shake after parking and shifting to P gear?

[SanKeegan]

Here is the introduction about the reason for the slight shake after parking and shifting to P gear: 1. Introduction 1: It is normal to feel the car body sink slightly after parking by pulling the handbrake and then releasing the foot brake. For example, when reversing downhill, after parking, pulling the handbrake and then releasing the foot brake, you will feel the rear of the car sink slightly. As for the feeling of the car moving during the process of shifting to P gear, the reason is that when shifting to R gear, the engine is under load, but due to the handbrake, the tires cannot move, resulting in the sensation of the car body moving. 2. Introduction 2: When shifting to P gear, the engine load is released, and the car body returns to its original position. You can test this: after parking, pull the handbrake, release the foot brake, then press the foot brake again, and shift from N gear to P gear. The car will not move, and there will only be a slight body reset action when releasing the foot brake.