Reasons for Abnormal Noise When Reversing a New Car?
2 Answers
When reversing, due to the opposite direction of vehicle movement, there is a certain amount of clearance between the brake pads and the rear end of the bracket. Therefore, when braking, the brake pads will impact the rear surface of the bracket, resulting in abnormal noise. In fact, the abnormal noise during reversing is a normal clearance noise and is not a sign of vehicle malfunction. Here are some methods to address abnormal brake noise: A thin layer of lubricating grease can be applied to the parts where the brake pads connect with the brake caliper bracket. This can help improve the phenomenon to some extent. However, it is important to note that when applying the lubricating grease, avoid applying it to the friction surface of the brake pads and the brake disc, as this could negatively affect braking performance.
I just bought a new car and it always makes strange noises when reversing, like metal scraping or squeaking, which is a bit annoying. New car noises are quite common, possibly related to the break-in of chassis components. For example, brake pads and rotors may have uneven surfaces during the initial period, causing squeaking when reversing due to uneven force distribution—this usually goes away after a few days of driving. Another reason could be that the new springs or shock absorbers in the suspension system haven’t fully settled yet, especially when reversing at sharp angles in a garage, resulting in a clunking sound, which is normal and nothing to worry about. Also, check if the tire pressure is correct; unstable pressure from the factory to the dealership or uneven contact between the wheels and the ground might cause noise. If the noise persists, I recommend visiting a 4S shop to inspect the brake rotors or transmission linkage, as these details are most likely to reveal minor issues during the break-in period. In short, after 1,000–2,000 km of driving, such noises usually disappear. Meanwhile, avoid sudden braking or sharp steering when reversing to help the parts adapt smoothly.
