2010 Mercedes-Benz C 2.1L Diesel · GS03 JMS

The most recent DVSA test on 9 December 2025 resulted in a fail due to a major defect, with the offside headlamp not working on dipped beam. Notably, a pass was also recorded on the same date, indicating a minor rectifiable issue was addressed immediately, though the official record still reflects the failed outcome. Prior to this, the vehicle has enjoyed three consecutive clean passes at the December 2024, 2023, and 2022 tests, with no advisories or defects recorded. Overall, the maintenance trend appears broadly stable and consistent with a well-cared-for example; the headlamp failure is an isolated electrical or bulb issue rather than indicative of systemic neglect. Nevertheless, the absence of any advisory history over four tests is unusual for a sixteen-year-old vehicle and may suggest previous advisories were rectified prior to test or that non-critical wear items have not yet reached advisory thresholds. With 122,682 miles recorded over sixteen years, this Mercedes-Benz C-Class has averaged roughly 7,668 miles annually, which is broadly typical for a vehicle of its age and class, though slightly below the average for higher-mileage business or commuter use. There are no significant gaps or erratic jumps in the recorded mileage between the documented MOT tests, which lends credibility to the odometer reading and suggests steady, consistent usage. At this mileage, the drivetrain, clutch (if manual), and major engine components will have undergone substantial mechanical duty, though modern Mercedes diesels and petrol engines of this era are generally robust when serviced diligently. The combination of moderate annual mileage and sixteen years of calendar age means that age-related degradation of rubber, plastics, seals, and electrical components should be considered alongside wear from use. Given the clean advisory history and the vehicle's age, prospective buyers should prioritise a thorough physical inspection focusing on calendar-based deterioration rather than relying solely on the MOT record. Tyres should be examined closely for sidewall perishing and dry-rot, which is common on low-usage or older vehicles, even if the tread depth remains within legal limits; budget for a full set if cracking is evident. Inspect the brake discs for corrosion around the outer edges, which can occur from standing or light use, and check for binding calipers by ensuring all four wheels rotate freely when jacked. The 12V battery, particularly if original or several years old, should be load-tested, as Mercedes vehicles of this generation are notoriously sensitive to voltage drop and can exhibit erratic electrical behaviour when the battery weakens. Further checks should include a full under-bonnet examination for perished coolant and brake hoses, oil leaks from the sump, valve cover, or rear main seal, and the condition of the auxiliary drive belt and tensioner, all of which are time-served components on a sixteen-year-old car. Verify the service book stamps and confirm that the diesel particulate filter (if applicable) has been subject to regular high-speed running or forced regeneration, as sustained low mileage can lead to DPF blockage. On the test drive, listen for suspension clonks or knocks over uneven surfaces indicative of failing coil springs or drop links, both common wear items on this chassis. Test the headlamp operation thoroughly on both dipped and main beam to confirm the recent repair has resolved the issue, and inspect the wiring connector for corrosion. Finally, confirm that all fluid services, including brake fluid (typically every two years), coolant, and transmission oil, have been performed on a calendar basis rather than purely by mileage, as age degrades these fluids regardless of use.