2011 Citroen C1 1.0L Petrol · KN11 CYY

Recurring issues with the supplementary restraint system and exhaust emissions, alongside a history of braking irregularities, define the mechanical profile of this Citroen C1. The most recent test on 27 March 2026 resulted in a pass, but this followed a significant failure just two days prior involving major defects related to the SRS warning lamp, exhaust leaks, and failed emissions readings. The presence of an advisory for an offside rear service brake binding in the latest test suggests that while the vehicle is currently compliant, the braking system remains a point of intermittent concern, mirroring previous failures regarding parking brake inoperability and axle brake imbalance recorded in 2021 and 2019. The vehicle has covered 72,027 miles over its approximately 15-year lifespan, representing an average annual accumulation of roughly 4,802 miles. This low annual mileage indicates a pattern of light usage, which can sometimes lead to specific mechanical issues such as component seizure or the degradation of rubber elements. The MOT record shows a notable testing gap between April 2025 and March 2026, though the mileage remains consistent with a low-use profile. Mechanically, this pattern means that while drivetrain wear may be lower than average, components like brake calipers, hoses, and seals may be subject to more frequent stasis-related issues rather than high-frequency wear. Prospective buyers should pay close attention to the braking system and exhaust integrity during a physical inspection. Given the repeated advisories for corroded brake pipes, deteriorated brake hoses, and binding calipers, a test drive should focus on detecting any uneven pulling during braking or a noticeable drag on the vehicle when coasting. Listen for any rhythmic clicking or scraping from the rear wheels, which could indicate the binding issue noted in the March 2026 advisory. Furthermore, because the vehicle failed recently due to exhaust leaks and lambda sensor readings, the exhaust system should be checked for any audible hissing or deep droning sounds, particularly during acceleration, which would indicate an unresolved leak. The repeated failure of the supplementary restraint system warning lamp is a critical item that requires verification. Ensure the airbag warning light illuminates upon ignition and then extinguishes as normal; a persistent light indicates a fault in the safety system that was flagged in both 2020 and 2026. Additionally, the history of lighting failures and windscreen washer issues suggests that basic electrical and fluid delivery components have required attention. During the inspection, verify that all headlamps, position lamps, and washers are fully operational to ensure no recent repairs have been overlooked.