2021 Citroen C1 1.0L Petrol · CE71 DWD

The latest MOT test for the 2021 Citroën C1 recorded a failure on 2025-09-15, with two major defects on the offside front brake discs and an advisory for near-side front brake disc wear, alongside a tyre wear advisory. This marks a deviation from the previous two clean MOT results in 2024 and 2025, indicating a potential emerging issue with the front brake system. The presence of both worn and pitted discs suggests progressive wear beyond normal operational limits, which could indicate underlying mechanical or thermal issues, such as excessive heat buildup from uneven braking, contamination (e.g., road debris), or potential hydraulic or caliper binding problems. While the failure is not catastrophic, it warrants immediate attention to prevent further deterioration, especially given the vehicle’s age and the observed wear patterns. The recorded mileage of 21,372 miles for a five-year-old C1 is unusually low for its age, averaging around 4,274 miles per year. Such low mileage often reflects periods of prolonged inactivity or light usage, which can exacerbate certain wear mechanisms. For example, standing brakes can cause corrosion on brake discs and calipers, leading to binding or reduced braking efficiency, while fluid degradation in hydraulic systems may accelerate over time. Additionally, suspension components like bushes and springs can degrade more rapidly when a vehicle is not in regular motion, potentially leading to clunking noises or uneven ride quality. The discrepancy between the vehicle’s age and recorded mileage should prompt a thorough inspection of standing corrosion, brake system integrity, and fluid condition to mitigate hidden risks. Given the recent MOT failure, the prospective buyer should prioritise a detailed inspection of the front brake system. Visually examine the brake discs for signs of excessive warping, glazing, or deep grooves that could compromise stopping performance. Listen for any grinding or squeaking noises during braking, which may indicate worn brake pads or metal-to-metal contact. Inspect the brake calipers for binding or seized movement, and check for fluid leaks around the brake master cylinder and caliper seals. If the discs are confirmed to be worn beyond the legal limit, the buyer should budget for a full brake overhaul, including pad replacement, disc resurfacing, and potential hydraulic system servicing. Additionally, the tyre wear advisories suggest uneven edge wear, which may point to alignment or camber issues—further investigation into wheel alignment and suspension geometry is recommended. For the broader vehicle inspection, given the low annual mileage, the buyer should focus on checks that address the effects of prolonged inactivity. Inspect the tyres for sidewall cracking or perishing, which can occur due to age-related degradation even with low mileage. Check the 12V battery for signs of corrosion on terminals and test its charge capacity, as standing vehicles are particularly susceptible to battery drain. Examine the exhaust system for leaks or structural integrity, as idling or stationary emissions can accelerate corrosion. Finally, since the vehicle has not undergone a full service in the past year, the buyer should verify the last recorded service stamps, particularly for fluid changes (oil, brake fluid, coolant) and filter replacements, as time-based fluid servicing is critical for longevity. If the vehicle has been in storage, a thorough inspection of the fuel system, water pump, and radiator for moisture ingress is also advisable.