2016 Mercedes-Benz C 1.6L Diesel · PL66 ABZ

A developing front suspension wear pattern sits at the heart of this C-Class roadworthiness profile, with the offside front lower arm ball joint showing slight play at the rear of the joint on three consecutive test entries spanning 2024 and 2025. Although the component has not yet progressed beyond advisory status and the car passed its most recent assessment on 20 November 2025, the repeatability of the defect across successive tests signals progressive wear in the front suspension geometry rather than a transient or one-off observation. A prior failure on 21 November 2024 was triggered by nearside front, nearside rear, and offside rear tyres worn close to the legal limit or worn on edge, a set of advisories consistent with the high-mileage operating profile and indicative of the rate at which contact patches are being consumed. Beyond these flagged items, the test record is otherwise clean: the 2022 entry shows no advisories, and the 2023 test recorded only minor pitted rear brake discs and plate deterioration, suggesting the deeper wear concerns have only emerged over the past two years and warrant close mechanical scrutiny going forward. With 122,673 miles recorded on a 2016 vehicle, this C-Class is averaging roughly 12,267 miles annually, a figure substantially above the typical UK mileage band and one that places meaningful cumulative demand on the engine, gearbox, drivetrain mounts, suspension bushes, and braking hardware. There are no extended gaps in the testing history, which provides confidence that mileage accumulation has been relatively continuous rather than the result of a long off-road period followed by sudden reintroduction. Given this sustained high usage, attention should be directed towards the consumable wear already documented on test, including the brake discs noted as pitted in 2023, the tyres flagged at or near minimum tread on multiple positions in 2024, and the recurring ball joint play. Mechanical components under such loading are likely to be approaching the latter portion of their natural service life, particularly items such as auxiliary drive belts, coolant hoses, anti-roll bar bushes, and engine mounts, even though none of these have yet surfaced as advisories. A prospective buyer should focus the physical inspection on the front suspension assembly, particularly the offside lower arm ball joint at its rear mounting, where play was recorded at both the 2024 and 2025 tests. On a test drive, listen for clonking or knocking noises from the front suspension over uneven surfaces, particularly speed bumps, potholes, and mid-corner bumps, and feel for any vagueness or looseness through the steering when changing direction or applying lock. The nearside front and both rear tyres should be examined for uneven shoulder wear, as the edge wear noted in 2024 can reappear if wheel alignment has drifted, and a four-wheel alignment check is advisable. The brake pedal should be tested for firmness and the car should be observed from a safe distance for any pulling to one side under braking, since pitted rear discs noted in 2023 will continue to wear and may now present visible lipping, judder under pedal pressure, or reduced efficiency compared to the front axle. It is also prudent to inspect the underside of the vehicle, paying particular attention to the front subframe mounting points, brake pipes, and flexible brake hoses, as a high-mileage Mercedes of this generation is known to develop corrosion in these areas even when surface panels remain sound. The exhaust system should be checked for blowing joints, cracked flexi sections, and signs of corrosion around the mounting rubbers, all of which become more likely at this mileage. Fluid condition should be assessed where visible, with attention to engine oil colour, coolant clarity, and any signs of seepage around the sump, rocker cover, or oil filter housing, the latter being a known weakness on this engine family. Finally, the registration plates, both front and rear, have been recorded as deteriorated across multiple tests, and while they remain legal, this is a cosmetic item worth noting for any future resale preparation. The overall picture is of a car that remains fundamentally roadworthy but is entering a phase where suspension component renewal and likely brake work should be anticipated as part of the short-term ownership cost.