The Pothole Pandemic: Which Brands Have the Weakest Suspensions?
If you feel like UK roads have turned into a slalom course, you’re not imagining it — and your suspension is paying the price.
The MOT is a brutally honest test of what potholes, speed bumps, kerbs and winters do to a car over time. And in the DVSA data behind Pre MOT Check, suspension wear shows up again and again as one of the most common reasons cars fail.
In this study, we answer three questions used buyers actually care about:
- Which manufacturers have the highest suspension-related MOT failure rates?
- At what vehicle age does suspension failure risk really take off?
- Which mainstream models are the worst offenders (so you can avoid surprises)?
If you want the broader context around MOT failures, pair this with:
What counts as a “suspension failure” here?
We grouped MOT failure items that clearly relate to suspension durability, including (but not limited to):
- Suspension pin, bush or joint excessively worn
- Coil springs fractured / weakened
- Shock absorbers leaking / damaged
- Suspension mounting corrosion
- Steering ball joints and related wear
This matters because a lot of “suspension failures” aren’t catastrophic breakages — they’re wear in bushes and joints that builds over years, and then fails the MOT when play becomes excessive.
The big picture: a 32× gap between best and worst
Across manufacturers with meaningful test volumes, the spread is enormous.
Worst-performing manufacturers for suspension-related failures
(Minimum 1,000 tests analysed)
| Rank | Manufacturer | Suspension Failure Rate | Models Affected | Total Suspension Failures |
|---|---|---|---|---|
| 1 | Great Wall | 27.89% | 7 | 478 |
| 2 | Bedford | 25.05% | 34 | 262 |
| 3 | Dodge (USA) | 24.63% | 36 | 626 |
| 4 | Opel | 24.41% | 46 | 291 |
| 5 | Talbot | 21.59% | 35 | 1,642 |
| 6 | Daimler | 20.38% | 37 | 373 |
| 7 | Mercedes | 18.82% | 184 | 1,017 |
| 8 | Renault Trucks | 18.54% | 27 | 300 |
| 9 | London Taxis Int | 18.43% | 25 | 4,046 |
| 10 | Dodge | 18.39% | 38 | 1,892 |
A note on interpretation: this table includes some legacy and niche makes — but the point stands: the spread is huge, and suspension durability is not “the same for everyone.”
The mainstream warning list (where the volume is)
For most UK drivers, the practical question is: which common makes are quietly expensive on suspension?
Here are high-volume brands that show up badly in this analysis:
- Nissan: 15.29% suspension failure rate, with 368,891 suspension failures recorded in the dataset.
- Mazda: 13.02% suspension failure rate.
- Volvo: 12.72% suspension failure rate.
- Renault: 11.71% suspension failure rate.
This is why suspension failures don’t just feel like “bad luck.” For some brands and models, they are a statistical expectation.
The best performers (and what that suggests)
At the other end of the spectrum, some manufacturers show dramatically lower suspension failure rates.
A few notable mainstream standouts from this analysis:
- Tesla: 3.76% suspension failure rate
- Porsche: 3.97%
- Škoda: 6.64% (one of the best value mainstream performers)
If you’re wondering why modern EVs can do well on suspension: platform age, engineering maturity, and weight distribution can all play a role — but also note that newer fleets have had fewer years to accumulate wear.
For the broader “EV reliability” context, see:
When do suspensions start failing? (Age matters a lot)
Even a “good” brand will rack up suspension wear eventually. The MOT data makes the age curve obvious:
| Vehicle Age Group | Suspension Failure Rate | Sample Size (Tests) | What This Means |
|---|---|---|---|
| 0–3 years | 1.67% | 9,315 | Almost failure-free |
| 4–5 years | 2.87% | 525,032 | Early wear begins (post-warranty zone) |
| 6–7 years | 3.52% | 1.91M | Wear accelerates |
| 8–10 years | 5.88% | 7.44M | “Major maintenance” age bracket |
| 11–15 years | 9.82% | 15.7M | Suspension overhaul territory |
| 15+ years | 13.47% | 15.2M | Expect regular failures |
This aligns with the broader MOT age curve too:
What actually breaks? (It’s mostly bushes and joints)
This is the single most useful takeaway for owners:
Over 70% of suspension failures are simply worn pins/bushes/joints.
That’s not glamorous, but it is actionable — and often detectable before an MOT.
| Suspension Issue (All Vehicles) | Total Failures | Share of Suspension Issues |
|---|---|---|
| Suspension pin, bush or joint excessively worn | 2,895,611 | 70.8% |
| Load-bearing structure corroded near mounting | 331,927 | 8.1% |
| Shock absorber damaged/leaking | 236,670 | 5.8% |
| Suspension component damaged/corroded | 219,215 | 5.4% |
| Steering ball joint excessive wear | 156,826 | 3.8% |
| Suspension joint dust cover missing | 132,429 | 3.2% |
Translation: you can reduce your suspension-related fail risk by checking for play, knocks, uneven tyre wear, and visible perished bushes — especially as your car passes 8 years old.
The worst suspension models (the ones to be careful with)
Some models show genuinely scary suspension fail rates.
Here are a few of the worst in this analysis (minimum 500 tests):
- Nissan Vanette: 36.06%
- Nissan Cabstar: 32.17%
- Nissan NV200: 28.48%
- Chrysler PT Cruiser: 29.03%
- Mercedes-Benz CLC: 24.88%
And the biggest "by volume" story is hard to ignore:
- Nissan Qashqai: 16.59% suspension failure rate, with 151,922 suspension failures recorded.
If you own one of these, don’t wait for the MOT to surprise you — use the model/year page to see the typical failure reasons and build a checklist around them.
What to do with this data (buyers + owners)
If you’re buying used
- Treat 8–10 years old as the suspension risk jump.
- Avoid known high-failure models unless there’s evidence of recent suspension work.
- Prefer models that show low suspension failure rates and a strong sample size.
If you’re preparing for an MOT
- Use the universal MOT checklist to cover the basics.
- Then use your vehicle’s model/year data to target likely weak points.
Check your car’s MOT stats by number plate
Methodology & data sources
- Data source: DVSA MOT test results (anonymised), processed into the Pre MOT Check database.
- Analysis date: December 2025.
- Scope: Suspension-related failure reasons (bushes/joints, springs, shocks, mount corrosion, related steering joints).
- Thresholds: Manufacturer tables use minimum sample size thresholds to avoid noise.
Frequently Asked Questions
Which car brand has the most reliable suspension?
Based on our MOT data analysis, Tesla (3.76%), Porsche (3.97%) and Škoda (6.64%) have the lowest suspension failure rates among mainstream manufacturers. The 32× gap between best and worst performers shows suspension durability varies dramatically by brand.
At what age do car suspensions typically fail MOT?
Suspension failure risk jumps significantly after 8 years. Cars aged 0-3 years have just 1.67% suspension failure rate, rising to 5.88% at 8-10 years and 9.82% at 11-15 years. The 8-10 year mark is the 'danger zone' where major suspension maintenance becomes likely.
Why do Nissan cars fail MOT on suspension?
Nissan has a 15.29% suspension failure rate with 368,891 failures in our dataset. Models like the Qashqai (16.59%), NV200 (28.48%), Cabstar (32.17%) and Vanette (36.06%) show particularly high rates. The volume of Qashqais on UK roads makes this a significant issue for buyers.
What suspension parts fail most on MOT?
Over 70% of all suspension MOT failures are worn pins, bushes and joints – not catastrophic breakages. Other common failures include corroded load-bearing structures (8.1%), damaged shock absorbers (5.8%) and steering ball joint wear (3.8%). Most are detectable before MOT through knocks, play and uneven tyre wear.
Key takeaways
- Suspension durability varies massively by make: this analysis shows a 32× spread between best and worst performers.
- The real “danger zone” begins around 8–10 years old, and accelerates after 11 years.
- 70.8% of suspension issues are worn bushes/joints — predictable wear you can often catch early.
- Some mainstream models (notably certain Nissans) show high suspension fail risk at scale.
- If you want fewer suspension surprises, choose model/year combinations with proven low fail rates — and inspect proactively before MOT time.