Why is my car making a heavy knocking or rattling noise when driving over bumps?
Quick Answer: A heavy metallic knocking noise over bumps usually means a snapped suspension coil spring, worn anti-roll bar linkage, or a failed shock absorber. A broken coil spring is a critical safety hazard because it can shift and slice directly into your tyre, causing an instant high-speed blowout.
Example of this symptom
What to do immediately:
- Reduce your speed immediately, especially over speed bumps and Coventry's potholes.
- Listen for scraping noises—if you hear metal rubbing on rubber, pull over instantly.
- Visually inspect your wheel arches to see if one side of the car is sitting noticeably lower than the other.
- Drive slowly and directly to a garage, or call for recovery if your steering feels loose or unresponsive.
How we fix this at Coventry Service Centre
We put your vehicle straight onto our workshop ramps for a full visual and physical pry-bar inspection. We identify the exact worn components—such as broken drop links, snapped springs, or degraded bushes—and replace them using high-quality OEM-equivalent parts. Finally, we perform a full wheel alignment (tracking) so your car drives perfectly straight and your tyres wear evenly.