What this noise usually means.
A clunk over bumps is usually a worn or detached front suspension component — most often anti-roll bar drop links or top mounts. It rarely indicates an immediate safety failure but should be diagnosed quickly.
Common causes.
- Worn anti-roll bar drop linksMost common cause; clunk over uneven road surfaces.
- Worn strut top mountKnock from the top of the suspension on bumps and full lock.
- Worn ball jointKnock under cornering and braking; can affect alignment.
- Worn suspension bushMultiple smaller knocks combined.
How serious is it?
Medium. Most parts are inexpensive to replace, but worn ball joints can develop into safety risks.
Typical UK repair cost.
£120–£500. Drop links: £120–£260. Strut top mount: £180–£420. Ball joint: £180–£500.
Prices are guides only. Individual quotes will vary by make, model, parts and labour rates.
When to contact a garage.
Within 1–2 weeks. Diagnose quickly so you don’t pay for a full strut when only the link needed replacing.
Use AutoEar to diagnose this sound.
Record the noise, answer a few quick questions and AutoEar will return a likely diagnosis, safety verdict, urgency and UK repair range — then connect you with a trusted local garage.