What Causes the Abnormal Noise in Audi A4 While Driving?
2 Answers
Audi A4 may produce abnormal noises while driving due to issues such as disc brake noise or front suspension ball joint noise. Reasons for disc brake noise: This occurs when the brake shoe support plate, vibration damping spring plate, or guide plate of the disc brake is damaged, deformed, or detached, increasing the gap between the brake shoe and the caliper support frame in all directions, resulting in mutual collision and noise. You can visit a repair shop to fix the deformed parts or replace the detached components. Reasons for front suspension ball joint noise: The gap between the ball joint and its socket becomes larger, causing severe looseness. Since the ball joint socket is a sealed structure and cannot be disassembled, the only solution in this case is to visit a repair shop for replacement.
I've encountered the issue of abnormal noises while driving an Audi A4 several times. The most common problems are aging suspension components—for instance, worn shock absorber bushings can cause creaking sounds when cornering or going over bumps. If the wheel hub bearings are damaged, they produce a humming noise, especially noticeable during high-speed turns. The braking system is also critical: thin brake pads may emit a whistling screech, or loose calipers can result in a rattling sound. External factors like loose exhaust pipe brackets or detached underbody plastic panels can also generate vibration noises while driving. These sounds are annoying, but more importantly, they may indicate safety risks, such as steering gear failure leading to unstable control. My advice is not to delay—take the car to a professional repair shop immediately. Have them use diagnostic tools to inspect components like bearings and brake discs. Addressing the issue early can save significant costs.
