2010 Mercedes-Benz C 2.1L Diesel · YK60 VRW

The 2010 Mercedes-Benz C presents a concerning pattern of recurrent braking system failures across multiple test cycles, with the most recent 2021-09-22 MOT recording four separate advisories including corroded nearside and offside front brake pipes and progressively thinning rear brake pads on both sides. This recurrence of critical issues—most notably the persistent rear brake pipe corrosion appearing in 2018, 2019, 2020 and again in 2021 alongside consistent rear pad wear—suggests a systemic weakness in the rear braking architecture rather than isolated incidents. While earlier tests in 2016 through 2017 showed cleaner records, the escalation in 2020 and subsequent confirmation in 2021 indicates the problem has worsened rather than resolved itself, making the current passing result tempered by documented deterioration over time. At 68,962 miles after approximately 16 years of ownership, the vehicle's mileage accumulation averages around 4,310 miles per annum, which appears unusually low for its age and would typically suggest minimal operational stress. However, the pattern of repeated brake-related failures occurring over several years contradicts a simple low-usage explanation, as the same structural weaknesses in the brake piping and braking components persisted even when the car appeared to have accumulated fewer kilometres than expected. The gap between the last clean MOT in 2017 and the first failure in October 2020 spans nearly three years, during which the rear brake pipes were already showing signs of severe corrosion, implying that the vehicle may have spent considerable time idle or under conditions where the pipes degraded gradually before being noticed during periodic inspections. The rear brake pipes represent the most critical concern, having been flagged as excessively corroded on both sides in 2020 and 2021, with the 2020 failure also adding additional major advisories for the same components. When assessing the test drive, the buyer should pay close attention to how the vehicle responds during hard braking on uneven surfaces—the corroded pipes can develop internal blockages that cause spongy pedal feedback, increased stopping distances, or complete loss of braking pressure if the internal seal fails catastrophically. Additionally, the consistently worn rear brake pads indicate that the braking system is operating under abnormal load, potentially due to the compromised pipe connections preventing proper heat dissipation or creating air in the hydraulic circuit. Listening for knocking sounds over bumps and feeling for any vibration through the chassis while braking will help determine whether the current state represents imminent failure or merely accelerated wear requiring continued monitoring.