Volvo S40 MOT Failures
An analysis of 84,911 real DVSA MOT tests on the Volvo S40 — what fails, how often, and how that compares to every other car on UK roads. Generations covered: Mk1 (1995–2004), Mk2 (2004–2012).
Where the Volvo S40 fails its MOT
The single biggest MOT failure point on the Volvo S40 is power steering fault — this model is 120 times more likely to fail on this item than the average car on UK roads. That makes it an extreme outlier for anyone buying or owning this model. Across 84,911 MOT tests, 4.05% of all Volvo S40 tests recorded this as a failure.
Steering faults include worn track rod ends, power steering leaks, and rack wear. These are safety-critical — any play in the steering should be investigated immediately.
Other notable weak points include suspension ball joints worn (176x the fleet average), emissions failure (48x the fleet average), anti-roll bar links worn (35x the fleet average), and steering rack wear (60x the fleet average). These ratios compare the Volvo S40's failure rate on each item against the national average for all cars tested — a ratio of 10x means this model fails ten times more often than a typical car.
The failures span 5 categories: Steering, Suspension, Exhaust & Emissions, Lights & Electrics, Brakes. If you're inspecting a Volvo S40 before purchase, these are the areas to focus on — and if any have been flagged as advisories on a previous MOT, they're likely to become failures in the near future.
How failures change with mileage
The Volvo S40's weak points shift as the car covers more miles. Understanding these patterns helps you know what to expect — and what to budget for — at each stage of ownership.
Under 60,000 miles
At this mileage, most failures are either design-related or caused by age rather than wear. Components like bushes and drop links may not have been replaced yet, and original-fit parts can deteriorate even on low-mileage cars that spend a lot of time sitting.
For the Volvo S40 specifically, the DVSA data shows the most common failures at this mileage are suspension ball joints worn (176x the average) and power steering fault (120x). brake hoses perished or damaged (68x) and steering rack wear (60x) also appear frequently.
60,000 to 100,000 miles
This is where routine wear items start to show up. Brake components, tyres, and exhaust parts have done serious work by this point. Cars that have been well serviced will show fewer of these failures — this mileage band is where good maintenance really separates the well-kept from the neglected.
For the Volvo S40 specifically, the DVSA data shows the most common failures at this mileage are suspension ball joints worn (62x the average) and suspension component damaged or corroded (29x). coil springs broken (22x) and power steering fault (18x) also appear frequently.
Over 100,000 miles
High-mileage cars accumulate failures across multiple systems. The key question isn't whether things will need doing — they will — but whether the car has been maintained well enough to keep on top of them. Look for a consistent service history and recent MOT passes with minimal advisories.
For the Volvo S40 specifically, the DVSA data shows the most common failures at this mileage are brake hoses perished or damaged (78x the average) and suspension ball joints worn (21x). anti-roll bar links worn (21x) and power steering fault (17x) also appear frequently.
The shift from suspension ball joints worn at lower mileages to brake hoses perished or damaged at higher mileages is typical — early failures tend to be design or factory-related, while high-mileage failures reflect accumulated mechanical wear. A car that's been well maintained will usually dodge the worst of both.
Known issues beyond the MOT
An MOT only tests roadworthiness at a single point in time — it won't catch developing faults, intermittent problems, or issues that haven't yet reached the failure threshold. These are the issues that Volvo S40 specialists and owners flag most frequently, drawn from manufacturer technical bulletins, workshop data, and verified owner reports.
Suspension component failure - pins, bushes and joints Dangerous
The S40 shows an exceptionally high failure rate for suspension pins, bushes and joints across all engine variants, with MOT data showing up to 1734.0 times the national fleet average failure rate. Affects Mk1, Mk2; typical independent garage repair cost is £200–£400.
Brake hose and ferrule corrosion Dangerous
Brake hose ferrules corrode at 106.6 times the fleet average on the S40, with flexible brake hoses deteriorating at 106.6 times the fleet average. Affects Mk1, Mk2; typical independent garage repair cost is £200–£400.
Steering rack gaiter deterioration Major
Steering rack gaiters and ball joint dust covers fail at 173.0 times the national fleet average on the S40, with over 2,200 MOT failures recorded. Affects Mk1, Mk2; typical independent garage repair cost is £120–£200.
Power steering system failure Major
The S40 experiences power steering failures at 173.0 times the fleet average, with both fluid leaks and system malfunctions documented across 1,314 MOT failures. Affects Mk1, Mk2; typical independent garage repair cost is £300–£600.
For the complete picture — including repair costs across independent, specialist, and dealer garages — see the full Volvo S40 common problems breakdown.
What to check before buying a Volvo S40
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Volvo S40:
Steering — check for power steering fault, steering rack wear. Suspension — check for suspension ball joints worn, anti-roll bar links worn, suspension component damaged or corroded. Exhaust & Emissions — check for emissions failure.
Beyond the MOT items, ask specifically about suspension component failure - pins, bushes and joints and brake hose and ferrule corrosion. These won't show up on a standard MOT but can be expensive to fix — repairs start from £200. A specialist pre-purchase inspection is worth the investment on this model.
Always check the car's full MOT history for patterns — recurring advisories often become failures within 12 months. And verify the service history to confirm maintenance has been kept up to schedule. Enter any reg into our free car check to see the complete picture.
Looking at a specific Volvo S40?
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Volvo S40 MOT FAQs
What are the most common MOT failures on a Volvo S40?
Based on 84,911 DVSA MOT tests, the most common failure is power steering fault — at 120x the national fleet average. Other frequent failures include suspension ball joints worn and emissions failure.
Is the Volvo S40 reliable based on MOT data?
The Volvo S40 has 15 MOT failure categories above the fleet average. Specialists also flag suspension component failure - pins, bushes and joints as a concern. A pre-purchase inspection and service history check are recommended.
What MOT failures should I expect at high mileage?
Above 100,000 miles, the Volvo S40 most commonly fails on brake hoses perished or damaged and suspension ball joints worn. Under 60,000 miles, the main issues are suspension ball joints worn and power steering fault.
How do I check a Volvo S40's MOT history?
Enter the registration number into our free car check above. You'll see every MOT test result, advisories and failures, mileage readings, write-off status, and finance checks.
MOT failure data sourced from DVSA bulk test records via data.gov.uk. Ratios compare this model's failure rate against the national fleet average. Known issues sourced from manufacturer bulletins, specialist workshops, and verified owner reports.