2021 Mercedes-Benz GLC 1.9L Diesel · OU71 WFE

The vehicle presented for MOT testing on 21 October 2025 initially failed with two major defects relating to cuts on the nearside and offside front outer tyres, both of which were recorded as being deep enough to reach the tyre ply or cords. These major items were addressed prior to a subsequent pass issued on the same date, which recorded no defects. A prior test on 22 October 2024 was passed without any advisories or defects being recorded. Overall, the maintenance trend appears broadly stable rather than deteriorating, although the tyre-related issues recorded in the most recent test warrant close attention. Tyre defects of this nature can recur relatively quickly depending on driving conditions, kerbing incidents, or simply the natural degradation of rubber compounds, so it would be prudent to confirm exactly when the front tyres were replaced and to inspect their current condition in person. With a recorded mileage of 59,253 miles over approximately five years of service, this GLC has covered around 11,851 miles annually, which is broadly typical for its age and segment. There are no significant gaps in the recorded mileage progression between tests, suggesting the vehicle has been in consistent use rather than left standing for prolonged periods. This level of usage is generally favourable for mechanical longevity, ensuring that consumables such as brake fluid, coolant, and gearbox oil have been regularly worked through their service intervals, and that the drivetrain has not been subjected to the additional stresses associated with very high annual mileages. However, the buyer should still verify the completeness of the main dealer or specialist service history to ensure that scheduled maintenance items have been attended to at the correct intervals. Given the tyre-related advisories and majors recorded in the most recent test, particular attention should be paid to the condition of all four tyres, including a careful inspection of the sidewalls for any perishing, cracking, or bulges that may have developed since the test. The nearside rear outer tyre had an advisory for a cut not deep enough to reach the ply or cords, and the nearside front tyre was flagged as worn close to the legal limit and worn on its edge, which can indicate issues with wheel alignment, camber, or suspension wear. On a test drive, the buyer should listen for any suspension clunks or knocks over uneven road surfaces, as these could point to worn bushes, drop links, or coil springs, and any pulling to one side under braking could suggest uneven tyre wear progression or a binding caliper. The front windscreen damage noted as a minor at the 2025 test should also be inspected to ensure it has not progressed into the driver's line of sight, which would constitute a future test failure. Although the MOT record is largely clean aside from the tyre concerns, the vehicle's age and mileage mean that several time-based service items should be verified. The 12V battery in particular can suffer reduced capacity and starting performance even on a vehicle of this age, so it is worth confirming its age and state of charge. Brake discs may have developed corrosion on the inner and outer surfaces if the vehicle has been used predominantly for short journeys or has stood for any length of time, potentially leading to binding calipers or judder under braking. Brake fluid is hygroscopic and should be renewed every two to three years regardless of mileage, while coolant and transmission fluid will also require periodic replacement. A thorough inspection beneath the vehicle for any signs of fluid leaks from the engine, gearbox, or differential, together with a check of the exhaust system for corrosion or insecure mountings, would form a sensible part of any pre-purchase evaluation of this Mercedes-Benz GLC.