2021 Citroen C5 Aircross Shine Puretech S/S 1.2L Petrol · KS21 ZFM

The Citroën C5 Aircross in question demonstrates a concerning pattern of mechanical oversight, despite passing its most recent MOT on 29 April 2026. While the last test recorded no defects at 78,473 miles, the immediate prior history reveals a critical failure in August 2025—just five months before the current pass—where both rear brake discs were deemed significantly and obviously worn , alongside worn pads and fluctuating brake performance. This suggests the vehicle was driven for nearly 5,300 miles between the failure and the subsequent pass, implying either a rushed repair or a temporary workaround rather than a full replacement of the rear brake assembly. The absence of further brake-related advisories or defects in the 2026 test does not negate the risk; the 2025 failure alone indicates a component nearing catastrophic wear, particularly given the high mileage accumulation. The recorded mileage of 78,473 miles over approximately five years—averaging 15,695 miles annually—is unusually high for a vehicle of this age, particularly when compared to industry benchmarks for light-use models. The gap between the 2024 MOT (52,638 miles) and the 2025 failure (73,162 miles) represents 20,524 miles in just under a year, a rapid accumulation that may correlate with the aggressive wear patterns observed. The lack of intermediate MOTs or service records further suggests inconsistent maintenance, as such mileage typically demands more frequent brake inspections and fluid changes. The most recent test, just three months old, provides minimal reassurance given the vehicle’s history of neglect. A buyer should prioritise an immediate, thorough inspection of the rear brake system, focusing on the condition of the discs, pads, and caliper binding—particularly the offside brake, which previously exhibited excessive fluctuation. The 2025 failure indicates the discs may have been replaced but could now be approaching the end of their lifespan again, especially if the vehicle has continued to accumulate high mileage. Suspension components, including rear bushes and coil springs, should also be examined for wear, as prolonged high-mileage use increases the likelihood of deterioration in these areas. Corrosion at wheel arches, subframes, and exhaust mounts warrants scrutiny, particularly if the vehicle has been exposed to salted roads or stored unsheltered. Given the history of brake neglect, the hydraulic system—including brake fluid condition and master cylinder operation—should be verified to rule out leaks or contamination.