2012 Mercedes-Benz C 3.0L Diesel · LS12 XAT

The vehicle most recently passed its MOT on 23 April 2026 with no defects recorded. While the latest result is clean, the broader historical trend suggests a reactive rather than proactive approach to maintenance. Previous tests indicate a pattern of allowing components to reach a critical state of wear before rectification, evidenced by a dangerous tyre failure in 2023 and a major suspension failure in 2021. The 2025 test was particularly telling, listing multiple advisories for corrosion and mechanical play, suggesting that the vehicle's overall condition may be deteriorating despite the most recent clean pass. With a recorded mileage of 98,937 miles over approximately 14 years, the car has averaged roughly 7,067 miles per year. This usage rate is typical for its age and suggests a balanced mix of urban and motorway driving. Mechanically, this mileage puts the vehicle in a phase where primary wear-and-tear components, such as suspension bushings, wheel bearings, and engine mounts, are likely to require replacement. There are no indications of excessive mileage or prolonged periods of standing, meaning the engine and drivetrain should be in a stable condition provided the service intervals have been adhered to. Prospective buyers should pay close attention to the braking system and chassis. The 2025 advisories regarding corroded brake pipes covered in grease are a significant point of concern, as this often indicates an attempt to mask structural corrosion or prevent further degradation. During a physical inspection, ensure the brake lines are free from excessive pitting or leaks. On the test drive, listen for a rhythmic humming or droning sound from the front nearside, which would indicate that the previously noted wheel bearing play has progressed. Similarly, listen for clunks or knocks when traversing uneven surfaces or during low-speed steering maneuvers, which would signal that the front suspension bushes or pins have deteriorated further. Given the history of tyre neglect, including a dangerous failure due to exposed cords, a thorough inspection of all four tyres is essential. Check for uneven wear patterns which may indicate lingering wheel alignment issues following the previous suspension repairs. Beyond the MOT history, verify the service book for evidence of calendar-based fluid changes, specifically the automatic transmission fluid and coolant, as these degrade regardless of mileage. Finally, check for any signs of binding calipers or brake disc corrosion, and ensure the 12V battery is holding a steady charge, as these are common failure points for vehicles of this vintage and usage profile.