Quick answer
Suspension can fail an MOT if components are broken, excessively worn, insecure, leaking badly or causing dangerous movement. Springs, dampers, control arms, bushes and mountings are commonly inspected.
If your car knocks over bumps, sits unevenly, bounces excessively or feels unstable, it is worth checking before the test.
When can suspension fail an MOT?
Broken spring
Cracked or snapped coil springs are common MOT failures.
Leaking shock absorber
Severe fluid leakage or poor damping can fail.
Worn bushes
Excessive movement in suspension bushes may fail.
Ball joint / arm play
Loose joints or damaged wishbones are serious defects.
Corroded mountings
Rust affecting suspension mount areas can fail.
Insecure components
Loose fixings or damaged attachments can fail immediately.
Common suspension parts checked
- 1Coil springs or leaf springs.
- 2Shock absorbers / dampers.
- 3Top mounts and strut bearings.
- 4Wishbones / control arms.
- 5Suspension bushes.
- 6Ball joints.
- 7Anti-roll bar links and bushes.
Signs your suspension may need repair
Knocking noises
Often heard over bumps or potholes.
Uneven ride height
One corner sitting lower can mean spring issues.
Bouncy ride
Weak dampers may allow repeated bouncing.
Tyre wear
Poor suspension geometry can wear tyres faster.
Pulling or wandering
Worn parts can reduce straight-line stability.
Steering vibration
Sometimes linked to worn joints or bushes.
What to check before your MOT
1. Listen over bumps
Clunks or rattles often indicate wear.
2. Inspect tyre wear
Uneven wear may reveal suspension faults.
3. Look at ride height
Compare both sides of the car.
4. Check for leaks
Inspect dampers for oil seepage.
5. Read old advisories
Previous bush or spring advisories often worsen later.
6. Repair early
Suspension faults can damage tyres and steering parts.
Can you drive with worn suspension?
Some minor wear may not feel dramatic at first, but suspension faults often reduce braking stability, tyre grip and steering precision.
If a spring is broken or the car feels unstable, get it checked quickly.
Typical UK repair costs
Drop links / bushes
Usually lower to moderate cost.
Spring / shock absorber
Moderate cost depending on axle and vehicle type.
Arms / joints
Higher if multiple worn components need replacing.
Related MOT and handling guides
Frequently asked questions
Can worn bushes fail MOT?
Yes, if wear is excessive or movement is beyond limits.
Can leaking shocks fail?
Yes, severe leaks or poor performance can fail.
Will broken spring always fail?
Usually yes, especially if fractured or insecure.
Can suspension cause tyre wear?
Yes, worn parts often affect alignment and tyre life.
Should I fix advisories early?
Often yes, because wear usually increases over time.
Best action before MOT?
Investigate noises, bounce and uneven ride height early.