2009 Mercedes-Benz C 2.1L Diesel · MT59 AEF

The vehicle is currently roadworthy, but the maintenance history reveals a pattern of reactive rather than proactive care. The most recent test in March 2026 at 105,635 miles initially failed due to an excessively worn nearside front suspension arm ball joint and a failed offside rear stop lamp. While these issues were rectified to secure a pass, the recurring nature of mechanical failures suggests components are only addressed once they reach a point of legal failure rather than during scheduled servicing. At 105,635 miles over 17 years, the car averages approximately 6,200 miles per year, which is consistent with typical low usage for a vehicle of this age. The data shows steady usage intervals, with roughly 6,400 miles covered between June 2024 and July 2025, and another 11,300 miles recorded between July 2025 and March 2026. This recent spike in mileage likely accelerated the age-related degradation of rubber components and metal lines despite the low annual distance driven. A buyer must pay close attention to the braking system and suspension integrity. The records from 2023 and 2024 highlight persistent corrosion on both front and rear brake pipes, which were noted as being covered in grease, a common tactic used to hide surface rust from the tester's visual inspection. Furthermore, the 2024 advisory regarding the rear parking brake just barely meeting efficiency requirements indicates that the mechanisms or cables are nearing the end of their functional life. The suspension also shows clear signs of wear, evidenced by the anti-roll bar linkage joint failure in 2023 and the control arm ball joint failure in 2026. A physical inspection should verify that the recent repairs were executed with quality parts and that no other joints or bushings are failing. The persistent front oil leak noted in 2024 should be monitored to ensure it has not escalated into a significant leak that could compromise engine health or pose a fire hazard.