2012 Mercedes-Benz C 2.1L Diesel · LS62 XTH

The most recent MOT, dated 7 October 2025, recorded a Pass but highlighted three advisories: under‑body covers now fitted, the nearside front tyre approaching the legal tread limit and showing edge wear, and the front brake disc showing measurable wear. This follows a failure just three weeks earlier that identified a fractured rear sub‑frame, exposed rear tyre cords and severe corrosion of a rear suspension mounting. The intervening years show a mix of clean passes and minor advisories, suggesting that while routine maintenance has been observed, the vehicle required significant structural remedial work in 2025. The trend therefore appears mixed: routine wear has been managed, yet the recent major safety failures raise concerns about the quality and durability of the repairs undertaken. With 73,838 miles logged over fourteen years the average annual mileage is roughly 5,300 mi, well below the typical UK average of 10‑12 000 mi. Such low utilisation often points to periods of infrequent use or prolonged storage, which can accelerate age‑related degradation of rubber, plastics and metal components despite the modest mileage. The low wear on consumables may be offset by calendar‑based deterioration, especially for tyres, seals and electronic systems that have been idle for extended periods. A prospective buyer should give particular attention to the rear sub‑frame and suspension mounting areas that were previously recorded as fractured and corroded. Inspect the underside for any signs of rust, cracks or poor welds, and verify that any replacement sub‑frame is of genuine Mercedes‑Benz specification and correctly torqued. On a test drive listen for clunking or knocking over bumps, feel for any looseness or wandering in the rear, and check that the steering remains stable under braking. The nearside front tyre must be examined for tread depth, edge wear and sidewall condition; if it is within a few millimetres of the legal minimum it will need replacement imminently. The front brake disc, noted as worn, should be measured for thickness and checked for scoring; a thin disc can lead to brake fade and vibration. Also confirm that the brake pads have been refreshed since the 2023 advisory, as thin pads can cause uneven disc wear. Given the vehicle’s age and low‑mileage profile, additional time‑based inspections are prudent. Verify the condition of all four tyres, noting that rubber beyond six years can perish even if tread remains acceptable; sidewall cracking or hardening is a red flag. Examine the battery for sulphation and test its cranking voltage, as long periods of storage often reduce capacity. Check that coolant, brake fluid and engine oil have been changed within the manufacturer’s service intervals, looking for milky coolant (signalling possible head gasket leakage) and moisture in the brake fluid. Finally, ensure that the service book is up‑to‑date, that any major repairs such as the rear sub‑frame replacement are documented, and that the under‑body covers now fitted are secure and do not conceal further corrosion.