2010 Mercedes-Benz C 2.1L Diesel · KN10 XOS

The most recent MOT, conducted on 14 September 2024 at 187,312 miles, passed, but the advisory items reveal a vehicle with persistent, unresolved mechanical wear rather than a clean bill of health. The maintenance trend is stable to slightly worsening. While the car has not suffered a recent failure, the same categories of defect keep reappearing. Corroded brake pipes were flagged in 2021, 2023, and again in 2024, indicating a chronic issue with the braking system's pipework that has not been fully remedied. Suspension components, including anti-roll bar linkage ball joints and inner tie rod joints, have shown play across multiple tests, suggesting gradual wear in the steering and suspension geometry. An oil leak was noted in 2024, adding to the picture of a high-mileage vehicle requiring ongoing attention to fluid systems and rubber seals. The mileage accumulation is consistent and unremarkable for a 2010 vehicle. Between the May 2021 test at 153,922 miles and the May 2023 test at 184,703 miles, the car covered approximately 30,800 miles in two years, a rate of roughly 15,400 miles annually. This then slowed significantly, with only 2,609 miles added between May 2023 and September 2024. The record shows no alarming gaps or suspicious drops, but the recent drop in annual mileage could mean the car has been standing idle for extended periods, which itself accelerates brake pipe corrosion and tyre sidewall deterioration. A buyer should focus their physical inspection on the underside and suspension. The repeated advisories for corroded brake pipes, particularly at the rear, demand a close look at the entire brake line run for heavy surface rust, flaking, or fresh patches of grease applied to mask corrosion. The inner tie rod joint play flagged in 2024 and the fractured nearside front coil spring identified in the 2021 failure both point to a front suspension system that has taken considerable punishment. Check the coil springs for cracks or sag, and have the front end jacked to verify the condition of the anti-roll bar links and track rod ends. The recurring tyre wear advisories, including a nail puncture in 2021 and edge wear in 2022, suggest possible alignment issues that have never been permanently corrected. Finally, investigate the oil leak noted in 2024, tracing it to the rocker cover gasket, camshaft seals, or the oil cooler lines common on this M271 engine.