2009 Mercedes-Benz C 2.1L Diesel · NX59 GUG

The vehicle remains roadworthy but the mechanical condition shows a worsening trend regarding suspension wear and fluid integrity. The most recent test in November 2023 at 170,202 miles identified new issues including a noise from the steering rack or subframe under braking and a persistent oil leak. While the vehicle passed, the recurrence of worn rear suspension arm pins and bushes across both 2022 and 2023 indicates that the lower chassis components are reaching the end of their operational life. At 170,202 miles, the car has averaged approximately 10,000 miles per year, which aligns with typical UK usage for a seventeen-year-old vehicle. There is a significant mileage gap between October 2019 and November 2020, where the vehicle covered over 23,000 miles in a single year. Since then, the accumulation slowed to a more consistent rate of roughly 5,000 miles annually. This historical high-mileage period places significant stress on rubber components and seals, explaining the noted mechanical degradations. A buyer must conduct a thorough inspection of the steering system and subframe, as the tester was unable to fully investigate the steering rack noise due to fitted undertrays. The persistent oil leaks noted in 2022 and 2023 require a professional assessment to distinguish between a minor weeping seal and a failing gasket. Furthermore, the recurring rear suspension bushes and the previously flagged front anti-roll bar ball joint suggest significant investment will likely be required shortly to restore handling and prevent uneven tyre wear.