2010 Citroen C5 1.6L Diesel · WF10 YSN

A consistent picture of brake wear and emerging corrosion emerges across the recorded MOT history of this 2010 Citroen C5, making the braking system and rear suspension the primary mechanical concerns for any prospective buyer. Pitted or scored brake discs have been flagged at all four corners over successive tests, first appearing on the front pair in August 2023 and the nearside rear in July 2024, before all four discs were noted as worn at the most recent test on 29 July 2025. Front brake pads have also been recorded as wearing thin at every test since 2023, suggesting this is a chronic pattern rather than a one-off observation. The rear shock absorbers were noted as corroded at the 2024 inspection, and the vehicle also failed an MOT in July 2024 on exhaust emissions exceeding both the manufacturer-specified and default limits, indicating a catalytic converter or lambda sensor issue that may still be latent. The cluster of advisories across multiple consecutive tests points to a car whose consumable braking components are at the end of their service life and whose rear dampers are beginning to deteriorate structurally. With 126,405 miles recorded over sixteen years, this C5 has covered roughly 7,900 miles per year, which sits close to the typical average for a vehicle of this age and indicates steady, regular use rather than long periods of standing. There are no unusual gaps in the MOT record and no sudden mileage jumps between tests, suggesting consistent annual accumulation. For a high-mileage European executive saloon of this vintage, the recorded usage implies proportionate wear on suspension bushes, engine mounts, clutch or torque converter internals, and timing chain components, and these areas should be examined carefully given that MOT testing does not cover internal engine or transmission condition. The relatively brisk annual mileage also explains why brake discs and pads have required attention at every recent test, as higher-mileage cars consume friction materials more rapidly than lightly used equivalents. A prospective buyer should treat the brake system as the top priority, given that all four discs and the front pads have been flagged at the most recent inspection. On a test drive, listen for any grinding or pulsation through the brake pedal, particularly under firm application, as pitted discs will often produce a judder or vibration rather than a squeal. Inspect the discs visually through the wheels for a pronounced lip at the outer edge and any visible ridging or blueing from heat cycling. The rear brake calipers should also be checked for free sliding, as seized calipers accelerate disc wear unevenly and have not been specifically recorded as inspected. A compression or leak-down test on the engine would be prudent given the 2024 emissions failure, and any roughness at idle, excessive smoke from the exhaust, or an illuminated engine management light should be investigated before purchase, as unresolved catalyst or lambda issues can return quickly. The corroded rear shock absorbers recorded in 2024 warrant particular attention, as corroded dampers on a sixteen-year-old vehicle can deteriorate rapidly once surface oxidation begins. On a test drive, listen for clonking or knocking noises from the rear suspension over speed humps, potholes, or uneven road surfaces, and pay attention to any excessive bouncing after pressing down on each rear corner, which would indicate the dampers have lost their hydraulic function. Inspect the shock absorber bodies and mounting areas for advanced surface rust, flaking, or any signs of structural perforation, and check that the spring seats and upper mountings remain free from heavy corrosion. While no advisories have been raised regarding suspension arms, bushes, or subframe condition, these components on a high-mileage C5 should be examined for perished bushes and any play in the rear hub assemblies, as the existing pattern of wear suggests the car is entering a phase where secondary suspension items are likely to require attention in the near future.