2009 Mercedes C 2.1L Diesel · FD58 MLV

The vehicle most recently passed its MOT on 7 May 2026, but the overall maintenance trend is concerning and appears to be worsening. While the car is currently roadworthy, the history reveals a pattern of recurring failures and escalating advisories, particularly regarding structural corrosion and suspension wear. The recent failure in April 2026 involving an inoperative engine management light and door mechanism, combined with the current advisories, suggests a vehicle that is beginning to suffer from age-related degradation and a cycle of reactive rather than preventative maintenance. With a recorded mileage of 170,235 miles over approximately 17 years, the vehicle has averaged around 10,014 miles per year. This is considered typical usage for a car of this vintage and class. However, such high cumulative mileage places significant stress on the drivetrain, engine internals, and all rubber-mounted components. A buyer should expect that many of the original consumables and wear items have already been replaced or are now due for their second or third replacement cycle, increasing the likelihood of imminent mechanical fatigue across the chassis and powertrain. The most critical area for inspection is the rear underbody. The MOT history shows a persistent and progressing issue with corrosion affecting the rear sub-frame, the upper vehicle structure near the subframe mounts, and the rear coil springs. You must physically inspect the chassis for structural integrity, as corrosion in these areas can lead to expensive welding requirements or render the vehicle unroadworthy in the near future. Furthermore, the history of excessively corroded rear brake pipes and a binding rear caliper indicates a vulnerability to rust. During a test drive, feel for any brake shudder or a tendency for the car to pull to one side, and check for uneven tyre wear which often signals a binding caliper. Attention must also be paid to the suspension system, which has seen multiple failures of ball joints and anti-roll bar linkages. Listen for metallic clunks or knocks when driving over uneven surfaces or during low-speed manoeuvring, as these are classic symptoms of worn suspension bushes and ball joints. The recent failure of the engine management light suggests an underlying electronic or sensor fault that may have been cleared but not necessarily resolved. Ensure the service history confirms regular oil changes and maintenance appropriate for this mileage, and verify that the current state of the rear coil springs does not result in an uneven ride height or poor handling characteristics.