Citroen Zx MOT Failures

An analysis of 5,678 real DVSA MOT tests on the Citroen Zx — what fails, how often, and how that compares to every other car on UK roads. Generations covered: ZX (1991–1998).

Where the Citroen Zx fails its MOT

The single biggest MOT failure point on the Citroen Zx is abs fault — this model is 15 times more likely to fail on this item than the average car on UK roads. That makes it worth watching for anyone buying or owning this model. Across 5,678 MOT tests, 21.21% of all Citroen Zx tests recorded this as a failure.

Suspension failures typically mean worn bushes, drop links, or dampers. These affect handling and tyre wear. Budget £150–£400 per corner at an independent garage for full suspension overhaul.

Other notable weak points include structural corrosion (17x the fleet average), subframe bushes or mounts worn (17x the fleet average), brakes imbalance across an axle (17x the fleet average), and wheel bearings worn (16x the fleet average). These ratios compare the Citroen Zx'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: Suspension, Bodywork, Brakes, Seatbelts & Airbags, Lights & Electrics. If you're inspecting a Citroen Zx 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 Zx'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.

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 Zx specifically, the DVSA data shows the most common failures at this mileage are structural corrosion (17x the average) and wheel bearings worn (16x). brake hoses perished or damaged (16x) and abs fault (15x) 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 Zx specifically, the DVSA data shows the most common failures at this mileage are light unit fault (37x the average) and cable damaged or knotted (17x). subframe bushes or mounts worn (17x) and brakes imbalance across an axle (17x) also appear frequently.

The shift from structural corrosion at lower mileages to light unit fault 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 Zx specialists and owners flag most frequently, drawn from manufacturer technical bulletins, workshop data, and verified owner reports.

Structural corrosion compromising body rigidity Dangerous

The ZX suffers from widespread structural corrosion that compromises the rigidity of the body assembly. Affects ZX.

Subframe mounting point corrosion Dangerous

The prescribed areas within 30cm of subframe and suspension component mounting points suffer from corrosion that significantly reduces structural strength. Affects ZX.

Wheel bearing wear and failure Major

Wheel bearings on the ZX become excessively rough and fail at significantly higher rates than comparable vehicles. Affects ZX; typical independent garage repair cost is £180–£280.

Brake hose deterioration and ferrule corrosion Major

Flexible brake hoses suffer from excessive deterioration and ferrule corrosion at significantly higher rates than comparable vehicles. Affects ZX; typical independent garage repair cost is £120–£200.

For the complete picture — including repair costs across independent, specialist, and dealer garages — see the full Citroen Zx common problems breakdown.

What to check before buying a Citroen Zx

Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Citroen Zx:

Suspension — check for abs fault, subframe bushes or mounts worn, wheel bearings worn. Bodywork — check for structural corrosion. Brakes — check for brakes imbalance across an axle, brake hoses perished or damaged.

Beyond the MOT items, ask specifically about structural corrosion compromising body rigidity and subframe mounting point corrosion. These won't show up on a standard MOT but can be expensive to fix — 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.

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.