Why is there a noise when the car is driving on uneven roads?

[StDaniela]

The reason for the noise when a car is driving on uneven roads is due to damage to the shock absorber plane shaft or aging of the buffer rubber on the front wheel shock absorbers. The connection points between the shock absorbers and the car body are equipped with buffer rubber, which can harden and age over time. When the hardened rubber is compressed, it produces a clunking sound. To resolve this issue, simply replace the aged rubber on the shock absorbers. Methods to reduce damage to the shock absorbers include: 1. Avoid aggressive driving: Aggressive driving not only shortens the lifespan of the shock absorbers but also significantly impacts other car components. 2. Slow down on bumpy roads: When driving on uneven roads or over speed bumps, try to slow down and ideally have both wheels pass over the speed bump simultaneously to better protect the vehicle.

[RubyMarie]

I've been driving for over a decade, and when I hear noises on rough roads, my first thought is that there's an issue with the chassis components. The most common problems are with the suspension system, such as when shock absorbers age and leak oil, losing their damping ability, causing springs and metal frames to rub directly against each other, producing squeaking or rattling sounds. It could also be due to worn-out bushings on the stabilizer bar or loose ball joints leading to wobbling and collisions at the connections. Additionally, improper tire balancing or loose chassis bolts can cause resonance noises. Loud noises are not only annoying but, more importantly, they signal potential safety hazards—ignoring them can lead to worsening component damage, costly repairs, and even accidents. I recommend paying attention to road conditions while driving, avoiding potholes to reduce impact, and having the suspension checked during regular maintenance. Tightening bolts and replacing worn parts early can save a lot of trouble.

[LeStephen]

As an enthusiast who frequently deals with car repairs, let me analyze this noise for you: Typically, noises on bumpy roads originate from friction or looseness in the chassis. Common causes include degraded shock absorber performance leading to loss of support, wear in ball joints or control arm bushings creating gaps that cause part collisions, or possibly loose exhaust pipe mounts causing rattling against the frame when driving over bumps. The type of noise can indicate the issue—squeaking suggests friction, while a clunking sound points to loose components. If ignored for too long, it may accelerate damage to other parts, such as warping brake discs. A simple solution: Pop the hood yourself to check bolt tightness, or have a repair shop inspect the chassis gaps using a lift. It's advisable not to delay—early detection and repair can extend the vehicle's lifespan and reduce risks.

[McAna]

I just started driving and encountered a noise under the car on bumpy roads, which was quite worrying at first. A friend explained that it might be due to loose chassis suspension or worn parts, such as a bad ball joint or failed shock absorber. A simple check is to lightly press the brake after parking to see if the noise changes; if a new car has abnormal noises, consider taking it back to the dealership for free warranty service. Although the noise is small, it can be annoying, and it might also be due to tire issues or excessive dust on the chassis. My personal approach: drive slowly over bumps to avoid heavy vibrations; ask a trusted mechanic to quickly check if the bolts are tight. Detecting and addressing issues early can prevent small problems from becoming big ones.