2009 Mercedes-Benz C 2.1L Diesel · SC09 YEE

The most recent MOT history for this Mercedes-Benz C-Class indicates a pattern of significant mechanical instability and escalating concerns regarding the braking system. While the vehicle eventually passed in May 2022, the preceding test in February 2022 was classified as a dangerous failure due to a complete lack of braking effort at both rear wheels, which is a critical safety deficiency. The subsequent pass was accompanied by multiple advisories concerning corrosion on all four upper brake pipes. This suggests a worsening trend where fundamental hydraulic components are degrading, moving from component-level failures to systemic corrosion issues that require immediate attention to prevent future total brake failure. With approximately 149,638 miles covered over 17 years, the vehicle has averaged roughly 8,800 miles per year. This level of usage is considered typical for a vehicle of this age and suggests it has not been subject to extreme high-speed motorway commuting, nor has it been left to sit idle for excessive periods. However, the mileage is high enough that wear and tear on consumable items such as suspension bushes, shock absorbers, and drivetrain seals should be expected. The consistency of the mileage suggests a regular usage pattern, but the mechanical records indicate that the maintenance of these components has been reactive rather than preventative. A prospective buyer must exercise extreme caution regarding the braking system and suspension. The history of brake pipe corrosion and the previous dangerous failure regarding rear brake efficiency necessitates a thorough physical inspection of the hydraulic lines and calipers. During a test drive, listen for any grinding or squealing from the rear, and check for a spongy or inconsistent brake pedal feel, which could indicate air in the system or further degradation of the pipes. Additionally, previous advisories regarding leaking front shock absorbers and play in the top mountings suggest that the suspension geometry may be compromised. You should listen for clunking or knocking noises when driving over uneven surfaces or turning the steering wheel, as these are classic symptoms of worn suspension bushes or failing dampers. Furthermore, the history of uneven tyre wear and noisy wheel bearings indicates that the vehicle's alignment and hub assemblies may require professional calibration or replacement. Given the age of the vehicle, even if the tyres appear to have sufficient tread, you must inspect the sidewalls for perishing or cracking, which occurs as rubber ages regardless of mileage. It is also essential to verify the service history to ensure that fluid changes, particularly brake fluid and engine oil, have been performed on a calendar basis rather than solely based on mileage, as moisture ingress in brake fluid can accelerate the pipe corrosion noted in the MOT records. Check for any evidence of fluid leaks under the vehicle and ensure the engine bay is free from excessive grime that might mask slow-developing leaks.