2011 Mercedes-Benz C 2.1L Diesel · EO11 EOK

A recurring pattern of premature rear tyre wear dominates the MOT history of this fifteen-year-old Mercedes-Benz C-Class and represents its most consistent mechanical concern. Across five of the seven recorded tests, the nearside and offside rear tyres have been flagged for being worn close to the legal limit, worn on edge, or in one case falling below the 1.6mm threshold with exposed ply and cords. The dangerous failure on 19 January 2021, which also included a headlamp aim defect on the nearside, demonstrates that the rear tyres had previously been allowed to deteriorate to a point where the vehicle was unroadworthy. The most recent test on 1 February 2024 returned a clean pass with no advisories, indicating that the rear tyres had been renewed prior to that examination, but the recurrence of the same advisory across consecutive tests in 2022 and 2023 strongly suggests that whatever alignment, suspension geometry, or loading issue is causing the uneven rear wear remains unresolved and will almost certainly reappear within the next ten to fifteen thousand miles. The recorded mileage of 179,368 against a vehicle of this age places annual accumulation at roughly 11,958 miles per year, which is broadly typical for a car of its vintage, although the absolute figure represents substantial wear on consumables and drivetrain components. The MOT record itself shows three tests in 2021, including a pass and a fail on the same day in January, which suggests the vehicle was being prepared for sale or compliance following the dangerous tyre failure. There is a notable gap in testing history between 2019 and 2021, indicating the car was either off the road or exempt from testing during that period, and another gap between 2024 and the present, leaving a degree of uncertainty about how the vehicle has been used over the past two and a half years. Given the high odometer reading, mechanical sympathy should be given to the engine, automatic transmission, clutch assembly if fitted, and the rear differential, all of which will have accrued considerable wear. For a prospective buyer, the primary inspection priorities should focus on the rear axle geometry, suspension geometry, and the components that govern tyre contact with the road. The persistent edge wear on both rear tyres points towards either a camber or toe misalignment at the rear, worn rear suspension bushes, sagging coil springs, or possibly a bent rear trailing arm or subframe component following an impact. On a test drive, the vehicle should be driven over broken surfaces and listened for clonking or knocking noises from the rear, particularly when traversing speed bumps or potholes, and any feeling of instability, wandering, or excessive body roll through corners would warrant closer inspection of the rear suspension arms, anti-roll bar links, and mounting bushes. The nearside headlamp aim defect recorded in 2021 should also prompt a check that both headlamps are currently aligned correctly, as a misadjusted unit will produce dazzle for oncoming traffic and fail an MOT immediately. Brake system condition is the secondary area meriting attention, given the advisory for worn front brake pads in 2017 and the high overall mileage. On inspection, the front discs should be measured for minimum thickness and checked for lipping or scoring, as the W204 C-Class is known to consume front discs and pads at a moderate rate, and replacement of both components together is advisable at this mileage. The brake pedal should feel firm without sponginess on the test drive, and any pull to one side under braking would indicate a binding caliper or a seized slide pin. Finally, given that no corrosion advisories have been recorded across all tests, the body and structural components appear to have remained sound up to the last examination, but a thorough walkaround paying particular attention to the wheel arches, sills, and rear subframe mounting points is still essential on a fifteen-year-old vehicle, as corrosion can develop rapidly between MOT intervals once initiated.