2016 Citroen C4 1.6L Diesel · SM16 CGU

The most recent DVSA examination on 24 July 2026 returned no advisories or defects, and this clean result follows two further passes in August 2025 and August 2024, suggesting a stable and well-maintained mechanical condition over the past three test cycles. However, the longer history does reveal isolated but mechanically significant issues that warrant attention. In November 2022 the vehicle failed with a dangerous defect relating to the front brake disc, cited as seriously weakened and causing vibration through the pedal when braking, indicating that a previous owner replaced the discs and pads as a direct result. In November 2023 the headlamp aim was recorded as too low on both sides, which is more commonly linked to suspension settlement or worn headlamp mounting fixings than to a bulb failure, though the same test recorded an advisory for offside rear tyre wear close to the legal limit and on the edge. The absence of any recorded defects on the three most recent passes suggests these issues were rectified, but they remain relevant context for any prospective buyer evaluating the vehicle. With 79,213 miles recorded against a ten-year service life, this C4 averages roughly 7,900 miles per year, which is broadly typical for a vehicle of its age and indicates consistent use rather than prolonged periods of standing. The MOT record shows tests conducted annually between November 2021 and November 2023, after which the cycle shifts to mid-summer in 2024, 2025, and 2026, suggesting either a change of test preference or a change of ownership. The mileage accumulation appears steady rather than excessive, which is positive for overall mechanical longevity, particularly for the clutch, drivetrain, and engine internals. That said, even moderate annual mileage on a ten-year-old vehicle means wear-sensitive items such as suspension bushes, coil springs, anti-roll bar links, and exhaust mounting rubbers will be approaching the latter stages of their service life, and these are not always fully captured within an MOT test. The historical brake disc failure is the most significant item in the file and warrants close physical inspection. On a test drive, listen for any pulsing or shuddering through the brake pedal under firm application, particularly from higher speeds, as this can indicate disc run-out or warping, especially if a non-genuine or excessively worn replacement was fitted. Check that the brake pedal feels firm and that the vehicle tracks straight under heavy braking without pulling to one side, which could suggest a binding caliper or uneven pad wear. Inspect the inner and outer faces of the front discs for a pronounced lip, scoring, or corrosion pitting, and verify that the brake fluid has been changed within the last two years, as fluid is hygroscopic and degrades on a calendar basis regardless of mileage. Given the front disc history, a precautionary inspection of the rear discs and pads is also sensible, as rear braking components are often neglected and can suffer from corrosion-related seizing on a ten-year-old vehicle. The November 2021 advisory noting all four tyres worn close to the legal limit, combined with the 2023 advisory for offside rear edge wear, suggests the vehicle may be sensitive to alignment geometry or to under-inflation. On inspection, check all four tyres for both tread depth and, critically, for sidewall perishing or cracking caused by age, as ten-year-old tyres can deteriorate even with adequate tread remaining. Verify that the tracking is within tolerance and that there is no uneven shoulder wear, which would point to worn suspension bushes or distorted wheels. Beyond tyres and brakes, a vehicle of this age and mileage requires careful attention to age-related items not always evident on an MOT, including 12V battery health, coolant condition, timing belt or chain service history depending on engine variant, and evidence of regular oil and filter changes. Listen on start-up for any timing chain rattle from cold, check for blue smoke from the exhaust indicating oil combustion, and inspect the undercarriage and jacking points for structural corrosion, as the C4 is known to be vulnerable in this area. A thorough pre-purchase inspection by a competent independent garage, including a borescope examination of the brake discs and a road test focusing on suspension compliance, is strongly recommended.