Why Does the Engine Make Abnormal Noises When Braking?

[HopeAnn]

Here are 3 reasons for abnormal noises when braking in a car: 1. Sand in the brake discs. Generally, newly purchased cars do not make abnormal noises when braking. If your car hasn't been driven many kilometers and the brakes are already making noises, it's likely due to particles like sand or iron powder getting into the brakes, causing a sharp sound when braking. 2. Overly hard brake pads. Some newly purchased cars make noises when braking, especially when braking lightly, usually because the brake pad material is too hard. The noise disappears when braking hard. In such cases, we can usually ignore it and let it wear in over time. 3. Severely worn brake pads, requiring repair at a 4S shop.