2011 Mercedes-Benz C 2.1L Diesel · KP11 YCK

The most recent DVSA examination on 20 January 2025 produced a Pass with no advisories or defects recorded, which is the most positive outcome shown in the file. However, this Pass was issued on the same day that the vehicle failed an earlier test on the same date, with both rear tyres receiving Major defects for cuts in excess of the prescribed limits, deep enough to reach the ply or cords. The fact that the car subsequently passed suggests replacement tyres were fitted before re-presentation, and the clean advisory position on the Pass indicates no other issues were identified at that time. Looking at the broader trend, the maintenance picture has been broadly stable but with a recurring pattern of brake pipe corrosion flagged across multiple tests since 2022, a suspension ball joint failure in January 2024, and various tyre wear advisories. The vehicle is clearly being maintained to a roadworthy standard, but the same niggling issues keep reappearing, suggesting some areas may be receiving short-term rectification rather than complete refurbishment. The recorded mileage of 141,821 miles against a 2011 registration equates to approximately 9,455 miles per year over the vehicle's life, which is broadly typical for a fifteen-year-old executive car and indicates regular rather than exceptional use. The MOT history shows annual testing from 2020 onwards with consistent mileage progression, and there are no obvious long gaps between records that would suggest extended standing periods. This kind of steady, moderate annual usage is generally favourable for mechanical longevity, as components such as the timing chain, turbocharger, suspension bushes, and brake discs benefit from regular exercise rather than sporadic short trips or long-term storage. At this mileage, however, the car will have consumed a number of major service items, and buyers should expect that items such as the automatic transmission fluid, coolant, and possibly the timing chain have been attended to at some point. A close physical inspection is strongly advised given the recurring brake pipe corrosion advisories that have appeared at every test since 2022 on both the offside front and offside rear lines, alongside a nearside front advisory in 2023. Brake pipe corrosion on a fifteen-year-old Mercedes is a significant concern, as corroded steel lines can weep brake fluid, reduce braking efficiency, and ultimately lead to MOT failure or, more seriously, brake fade or loss under heavy use. On a test drive, listen for any soft or spongy pedal feel, pulsing under braking, or pulling to one side, and have the lines inspected for surface rust and pitting, particularly along the underbody runs and at union joints. Replacement of corroded sections, or ideally a full brake line refurbishment, should be budgeted for. The 2024 failure for an excessively worn offside front lower suspension arm ball joint is a notable item, and although it was presumably replaced to achieve the subsequent Pass, buyers should be alert to premature wear on other suspension components. On the road, listen for clonks or knocks over speed bumps, uneven tyre wear particularly on the inner or outer edges, vague steering, or vibration through the cabin at speed. The 2023 advisory for rear prop shaft flexible coupling deterioration should be checked, as worn couplings on rear-wheel-drive Mercedes models typically present as a shunt or clunk on take-off or when reversing. Finally, given the age and mileage, confirm a full service history including recent brake fluid, coolant, and automatic transmission fluid changes, inspect the tyres for age-related sidewall cracking regardless of tread depth, and test the 12V battery and alternator output, as electrical ancillaries on older premium vehicles can be costly to rectify.