Citroen Ds4 MOT Failures
An analysis of 189,689 real DVSA MOT tests on the Citroen Ds4 — what fails, how often, and how that compares to every other car on UK roads. Generations covered: DS4 (2011–2020).
Where the Citroen Ds4 fails its MOT
The single biggest MOT failure point on the Citroen Ds4 is front or rear fog lamp not securely attached — this model is 136 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 189,689 MOT tests, 0.52% of all Citroen Ds4 tests recorded this as a failure.
Lighting faults are usually straightforward to fix (bulbs, connectors, earth points) but can indicate deeper wiring issues on older cars. Check all lights including fog lamps, number plate lights, and dashboard warning lights.
Other notable weak points include parking brake inefficient (64x the fleet average), emissions failure (26x the fleet average), transmission joint, belt or chain worn (20x the fleet average), and transmission shaft constant velocity joint boot... (25x the fleet average). These ratios compare the Citroen Ds4'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 4 categories: Lights & Electrics, Brakes, Exhaust & Emissions, Bodywork. If you're inspecting a Citroen Ds4 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 Ds4'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 Ds4 specifically, the DVSA data shows the most common failures at this mileage are parking brake inefficient (57x the average) and front or rear fog lamp not securely attached (40x). emissions failure (26x) and transmission shaft constant velocity joint boot... (25x) 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 Ds4 specifically, the DVSA data shows the most common failures at this mileage are parking brake inefficient (64x the average) and front or rear fog lamp not securely attached (35x). transmission joint, belt or chain worn (12x) and emissions failure (12x) 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 Ds4 specifically, the DVSA data shows the most common failures at this mileage are parking brake inefficient (59x the average) and front or rear fog lamp not securely attached (37x). emissions failure (9.0x) and transmission joint, belt or chain worn (7.1x) also appear frequently.
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 Ds4 specialists and owners flag most frequently, drawn from manufacturer technical bulletins, workshop data, and verified owner reports.
Electronic parking brake system failure Major
The DS4's electronic parking brake (EPB) system suffers from multiple documented failure modes including motor seizure, cable stretch, and control module faults. Affects All; typical independent garage repair cost is £400–£800.
DPF blockage and regeneration failure (Diesel) Major
The DPF system struggles with short urban journeys and requires regular high-temperature regeneration cycles to burn off accumulated soot. Affects All; typical independent garage repair cost is £200–£400.
Front suspension spring fracture Major
The DS4 suffers from premature front coil spring failure at 40.4 times the national average according to MOT data. Affects All; typical independent garage repair cost is £180–£300.
Same issues as DS3 Major
The DS4 shares engine families and many mechanical components with the DS3, inheriting similar documented issues including timing chain wear on petrol engines, turbocharger problems on both petrol and diesel variants, and cooling system component failures. Affects All; typical independent garage repair cost is £0–£0.
For the complete picture — including repair costs across independent, specialist, and dealer garages — see the full Citroen Ds4 common problems breakdown.
What to check before buying a Citroen Ds4
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Citroen Ds4:
Lights & Electrics — check for front or rear fog lamp not securely attached, rear registration plate lamp or light source mi..., registration plate lamp not securely attached. Brakes — check for parking brake inefficient, brake fluid significantly below minimum mark. Exhaust & Emissions — check for emissions failure. Bodywork — check for transmission joint, belt or chain worn, transmission shaft constant velocity joint boot....
Beyond the MOT items, ask specifically about electronic parking brake system failure and dpf blockage and regeneration failure. These won't show up on a standard MOT but can be expensive to fix — repairs start from £400. 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 Ds4?
Enter the reg to see its full MOT history, mileage records, write-off status, and finance checks.
Citroen Ds4 MOT FAQs
What are the most common MOT failures on a Citroen Ds4?
Based on 189,689 DVSA MOT tests, the most common failure is front or rear fog lamp not securely attached — at 136x the national fleet average. Other frequent failures include parking brake inefficient and emissions failure.
Is the Citroen Ds4 reliable based on MOT data?
The Citroen Ds4 has 12 MOT failure categories above the fleet average. Specialists also flag electronic parking brake system 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 Ds4 most commonly fails on parking brake inefficient and front or rear fog lamp not securely attached. Under 60,000 miles, the main issues are parking brake inefficient and front or rear fog lamp not securely attached.
How do I check a Citroen Ds4'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.