2016 Mercedes-Benz C 2.1L Diesel · OE66 AAJ

A remarkably sparse DVSA file defines the roadworthiness picture for this 2016 Mercedes-Benz C-Class, with five tests recorded since 2023 and only two failure entries that carry no defect codes whatsoever. The 2025-11-07 failure followed just four days later by a 2025-11-11 pass is a common DVSA pattern where a vehicle is presented unready, fails on a basic check, the fault is rectified off-site, and a retest is booked almost immediately. With both events showing no recorded advisories or component failures, there is no documented pattern of mechanical deterioration across the visible record, though the absence of advisory data means any wear that fell below the failure threshold during these tests cannot be confirmed. The 2023-11-23 test also shows the same simultaneous fail-and-pass structure, suggesting this vehicle has been repeatedly presented just before a scheduled test rather than maintained proactively between annual checks. While the visible history shows no failed components, the lack of any advisory notes across three pass certificates is itself unusual for a ten-year-old Mercedes and warrants a thorough independent pre-purchase inspection rather than reliance on the MOT record alone. At 152,626 miles against an age of roughly ten years, this C-Class is accumulating around 15,263 miles per year, which sits at the upper end of typical usage for its class and significantly above the average for a luxury saloon of this vintage. This sustained high-mileage profile places predictable long-term demand on the drivetrain, suspension, braking system, and interior components, particularly the dual-clutch or torque-converter automatic transmission, rear multilink suspension linkages, and front MacPherson struts that are characteristic of the W205 chassis. The test history begins in late 2023 with no entries between 2016 and that date visible in the DVSA file, which is standard for vehicles first MOT-tested at three years of age and then annually thereafter, though the rapid succession of tests in both 2023 and 2025 confirms the car has remained in active use throughout. Buyers should interpret the high odometer reading as a clear signal to budget for wear-item replacement, particularly on suspension bushes, engine and gearbox mounts, and the exhaust system, none of which are documented in the available records. A pre-purchase inspection should focus on the areas most likely to have suffered under sustained motorway and urban mileage, starting with a cold-start observation for any timing chain chatter from the M274 petrol engine or vibration from the OM626 diesel, both commonly fitted to this generation. During the road test, listen carefully for clonking or knocking from the front suspension over speed humps and uneven surfaces, as the lower wishbone arms, anti-roll bar drop links, and top mounts on the W205 are prone to wear that produces audible thuds before it shows up on an MOT ramp. On the steering, check for vagueness off-centre, any knocking through the rack under load, and uneven tyre wear which would indicate geometry misalignment from worn suspension components. Brake pedal feel should be assessed for sponginess or excessive travel, as caliper slide pins and rear electric parking brake actuators are known wear points that can bind or seize on high-mileage examples. Finally, a thorough under-bonnet and under-tray inspection is strongly recommended, with particular attention to any oil seepage around the sump plug, valve cover gasket, and turbocharger oil feed pipes on diesel variants, as well as coolant staining around the expansion tank and radiator matrix. The underside should be examined on a ramp for subframe and wishbone corrosion, exhaust heat-shield security, and the condition of the rear differential mounting on 4MATIC versions. Given the dual fail-and-pass pattern seen in both 2023 and 2025, it is also worth asking the seller for receipts covering any work carried out immediately before each retest, as this will clarify whether the failures related to straightforward items such as blown bulbs, tyre condition, or washers, or whether more substantive rectification work was required. An independent inspection by a Mercedes specialist or a firm offering a comprehensive pre-purchase assessment would be a prudent investment on a vehicle of this age and mileage, particularly as the unusually clean DVSA record provides limited insight into the underlying mechanical state.