2006 Mercedes-Benz C 2.1L Diesel · SE06 GDF

The most recent MOT on 23 October 2025 at 131,734 miles resulted in a pass, though the tester noted rear brake pipe corrosion covered in grease and rear sub‑frame corrosion that was not seriously weakened. Two days earlier, on 22 October 2025 at 131,732 miles, the same vehicle failed for rear brake pipe corrosion, sub‑frame corrosion, an excessively worn off‑side front lower suspension arm ball joint and missing dust covers on both front anti‑roll bar ball joints. The quick turnaround from fail to pass suggests the corrosion and ball‑joint wear were addressed before the retest. Looking back, the pattern of rear brake pipe and sub‑frame corrosion appears repeatedly, while suspension wear and brake‑disc thinning have also been flagged on several occasions. The recurring corrosion indicates a persistent issue rather than a resolving one, and the suspension wear shows no clear improvement over time. At twenty years old the car has accumulated 131,734 miles, averaging roughly 6,600 miles per year, which is typical for a vehicle of this age. Mileage progression shows steady use: from 103,273 miles on 25 October 2021 to 112,224 miles on 20 October 2022, then 116,057 miles on 31 October 2023, 123,069 miles on 31 October 2024 and finally 131,734 miles on 23 October 2025. There are no large gaps or sudden jumps that would indicate prolonged periods of storage or unusually high usage in any single interval. A prospective buyer should pay particular attention to the rear brake lines and sub‑frame for signs of ongoing corrosion, as these items have been flagged in every test since 2023. The front lower suspension arm ball joint and anti‑roll bar ball joint dust covers merit close inspection, given the recorded excessive wear and missing covers in the 2025 failure. Brake discs and pads should be measured for thickness, especially the rear discs that have repeatedly approached the wear limit, and the front discs that have shown pitting but not serious weakening. Tyre tread depth and headlamp lens clarity also need verification, as both have caused failures in the past due to low tread and contaminated lenses. Finally, the anti‑roll bar linkage pins or bushes, noted as worn but not excessive in 2024, should be checked for any deterioration that could affect handling.