Citroen Ds3 MOT Failures
An analysis of 817,230 real DVSA MOT tests on the Citroen Ds3 — what fails, how often, and how that compares to every other car on UK roads. Generations covered: A55 (2010–2019).
Where the Citroen Ds3 fails its MOT
The single biggest MOT failure point on the Citroen Ds3 is exhaust system damage — this model is 32 times more likely to fail on this item than the average car on UK roads. That makes it a significant weak point for anyone buying or owning this model. Across 817,230 MOT tests, 7.15% of all Citroen Ds3 tests recorded this as a failure.
Bodywork failures usually mean structural corrosion — not cosmetic rust, but rot that affects the car's structural integrity. Check sills, subframes, and chassis rails carefully, especially on older examples.
Other notable weak points include emissions failure (55x the fleet average), transmission shaft constant velocity joint boot... (27x the fleet average), any part of the noise suppression system insecure (16x the fleet average), and headlight fault (8.8x the fleet average). These ratios compare the Citroen Ds3'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: Bodywork, Exhaust & Emissions, Lights & Electrics, Wheels, Brakes. If you're inspecting a Citroen Ds3 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 Citroen Ds3'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 Citroen Ds3 specifically, the DVSA data shows the most common failures at this mileage are emissions failure (55x the average) and exhaust system damage (32x). transmission shaft constant velocity joint boot... (27x) and light unit fault (15x) 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 Citroen Ds3 specifically, the DVSA data shows the most common failures at this mileage are emissions failure (20x the average) and wheel with a loose or missing wheel nut, bolt o... (12x). exhaust system damage (12x) and transmission shaft constant velocity joint boot... (10x) 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 Citroen Ds3 specifically, the DVSA data shows the most common failures at this mileage are any part of the noise suppression system insecure (16x the average) and emissions failure (14x). exhaust system damage (8.9x) and headlight fault (8.8x) also appear frequently.
The shift from emissions failure at lower mileages to any part of the noise suppression system insecure 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 Citroen Ds3 specialists and owners flag most frequently, drawn from manufacturer technical bulletins, workshop data, and verified owner reports.
Timing chain failure (merged from timing chain failure and timing chain issues - EP6DT) Dangerous
The timing chain tensioner hydraulic system on EP6 THP engines is undersized for the chain loads and fails prematurely, allowing chain stretch and eventual timing jump. Affects A55; typical independent garage repair cost is £800–£1,200.
Turbo failure Major
The KKK K03 and K04 turbochargers fitted to THP engines suffer from oil seal failure and bearing wear, particularly when combined with irregular oil changes or timing chain issues that reduce oil pressure. Affects A55; typical independent garage repair cost is £600–£1,000.
DPF issues Major
The diesel particulate filter on DV6 HDi engines blocks frequently due to the filter's small size relative to the engine's soot production, particularly on cars used primarily for short urban journeys. Affects A55; typical independent garage repair cost is £500–£1,000.
Exhaust system failure
The DS3 exhaust system shows premature corrosion and joint failure, particularly at the rear silencer and flexible sections. Affects A55; typical independent garage repair cost is £100–£300.
For the complete picture — including repair costs across independent, specialist, and dealer garages — see the full Citroen Ds3 common problems breakdown.
What to check before buying a Citroen Ds3
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Citroen Ds3:
Bodywork — check for exhaust system damage, transmission shaft constant velocity joint boot.... Exhaust & Emissions — check for emissions failure, any part of the noise suppression system insecure, fluid leak.
Beyond the MOT items, ask specifically about timing chain failure and turbo failure. These won't show up on a standard MOT but can be expensive to fix — repairs start from £800. 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 Citroen Ds3?
Enter the reg to see its full MOT history, mileage records, write-off status, and finance checks.
Citroen Ds3 MOT FAQs
What are the most common MOT failures on a Citroen Ds3?
Based on 817,230 DVSA MOT tests, the most common failure is exhaust system damage — at 32x the national fleet average. Other frequent failures include emissions failure and transmission shaft constant velocity joint boot....
Is the Citroen Ds3 reliable based on MOT data?
The Citroen Ds3 has 18 MOT failure categories above the fleet average. Specialists also flag timing chain failure 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 Citroen Ds3 most commonly fails on any part of the noise suppression system insecure and emissions failure. Under 60,000 miles, the main issues are emissions failure and exhaust system damage.
How do I check a Citroen Ds3'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.