2011 Citroen C3 1.6L Diesel · AF11 OAS

A recurring pattern of emissions-related test failures and braking component degradation defines the mechanical history of this Citroen C3, which most recently passed its MOT on the eighth of April 2026. Prior to that pass, the vehicle accumulated consecutive test failures in March 2026 due to excessive exhaust smoke density alongside persistent advisories noting pitted and worn brake discs across both the front and rear axles. This follows earlier emissions failures in 2023, pointing to a historical vulnerability in the combustion or exhaust management systems that required rectification before compliance could be achieved. Accumulating just 48,242 miles over its fifteen-year lifespan, this vehicle averages approximately 3,216 miles per annum, representing a notably low usage profile. This restricted annual mileage is accompanied by consistent, uninterrupted annual testing intervals with no prolonged gaps or off-road declarations, indicating that the car has remained in regular, albeit light, service rather than sitting dormant for extended periods. During the pre-purchase inspection and test drive, prospective buyers must carefully evaluate the health of the braking system, paying attention to the friction surfaces of both front and rear discs that were flagged as scored and pitted in the 2026 tests. Listen closely for any grinding noises, vibration through the brake pedal, or pulling to one side when decelerating from speed. Furthermore, the historical record of a minor oil leak noted in 2022 and persistent rear exhaust mounting defects flagged across multiple tests in 2023 and 2024 require a thorough underbody inspection using a ramp to check for escaping fluids and secure exhaust hanger integrity. Given the multiple historical failures concerning exhaust emissions, the engine management system and emissions equipment require close scrutiny to ensure the underlying cause of the previous smoke opacity failures has been fully resolved rather than temporarily masked. On the test drive, observe the exhaust tailpipe during cold startup and heavy acceleration for any signs of excessive smoke, and verify that the engine idles smoothly without hesitation or surging. Assessing these specific areas will provide a clearer picture of the current mechanical condition beyond what is captured on the MOT certificate.