What Causes the 'Clunk' Sound When Reversing a Car?

[VanIvan]

This is a normal phenomenon. When shifting into reverse gear to back up, the rotation direction of the transmission system changes from forward to reverse, causing variations in the forces acting on each component. The load-bearing points of parts with gaps need to realign, resulting in collisions between these points, which produces the 'clunk' sound. Below are precautions for reversing: 1. Plan the route: Before reversing, assess the situation behind the vehicle, plan the reversing path, and ensure the front of the car won't hit any obstacles during the process. 2. Steering technique: If the rear of the car needs to move toward the right rear, turn the steering wheel to the right. Conversely, turn it to the left. 3. Monitor the mirrors: Don't focus solely on the rear while reversing. While ensuring rear safety, periodically check the left and right side mirrors to note the distance between obstacles and the vehicle body, adjusting the steering wheel accordingly to correct the car's position as it moves backward. 4. Throttle control: Avoid accelerating while reversing and maintain a controlled, moderate speed.