2012 Mercedes-Benz C 2.1L Diesel · LL62 KCC

Chronic suspension wear combined with persistent brake and corrosion advisories define the mechanical outlook for this 2012 Mercedes-Benz C-Class, which secured a pass at its most recent MOT on 20 November 2025 but only after failing nine days earlier due to an excessively worn offside front suspension arm ball joint. The recorded trajectory shows a pattern of escalating front-end deterioration, beginning with early wheel bearing play flagged in 2023 and culminating in that failed ball joint in late 2025. Front brake discs have also been noted as pitted and scored on both sides across the last two tests, suggesting surface corrosion or pad material transfer that, while not yet a failure point, indicates the discs are nearing minimum thickness and will likely require replacement in the near term. The pair of rear coil spring corrosion advisories recorded alongside the brake wear is a familiar sight on C-Class chassis of this vintage exposed to winter road salt, and such corrosion typically advances quickly once initiated, particularly at the lower spring seats. Mileage stands at 158,464 across fourteen years, averaging roughly 11,319 miles per year, which is broadly proportionate for a car of this age and broadly consistent with mixed private and commuting use. There are no significant gaps in the testing record or sudden mileage jumps that would suggest long periods off the road or clock irregularities, providing reasonable confidence in the recorded odometer history. At this annual accumulation, the vehicle has covered sufficient distance for routine service items such as timing chain guides, injector seals, and electrical modules on this generation of Mercedes to have been subjected to normal wear, and any evidence of recent major mechanical work on the file should be scrutinised to confirm it was carried out. For a prospective buyer, the suspension components flagged in the MOT history should be the primary focus of any pre-purchase inspection. The failed offside front ball joint will typically have been replaced to secure the recent pass, but on test drive listen carefully for any clonks or knocks from the front end over speed humps and uneven surfaces, particularly under braking or when turning into a driveway at low speed. Check that the tracking is not noticeably out, that there is no uneven tyre wear across the front axle, and that the steering returns to centre without delay. The wheel bearings previously noted with slight play should be rechecked by rocking each front wheel at the hub to confirm no roughness or looseness has developed since. Inspect the front brake discs visually for a pronounced lip on the outer edge and feel for pulsation through the brake pedal under firm application, as pitted discs will produce a definite judder when hot. Finally, examine the rear coil springs closely for surface rust scale and cracking, paying particular attention to the lower coils where load stress concentrates, and have the vehicle raised to allow a thorough view of the spring pans and surrounding subframe for any advancing corrosion that may compromise structural integrity at future tests.