2021 Mercedes-Benz GLC 1.9L Diesel · AV21 NNL

A pattern of accelerating consumable wear is evident in the recent MOT history, with the most recent test on 31 March 2026 showing a significant increase in advisories compared to previous years. While the vehicle passed its 2024 and 2025 inspections, the latest record indicates that all four tyres are worn close to the legal limit or worn on the edges, alongside thinning front brake pads. This shift from a single brake pad advisory in March 2025 to a comprehensive list of tyre and brake wear in March 2026 suggests that the vehicle is currently due for a significant round of maintenance regarding its contact patches and braking components. The recorded mileage of 50,906 miles over approximately five years represents an average annual usage of roughly 10,181 miles, which aligns with typical UK driving patterns for a vehicle of this age. This consistent mileage accumulation suggests regular road use rather than long periods of inactivity, which generally avoids the specific risks associated with stationary vehicles, such as seized calipers or perished rubber components from lack of movement. However, the steady mileage confirms that the vehicle has undergone sufficient distance to necessitate the replacement of wear-and-tear items like tyres and brake pads, as reflected in the latest DVSA data. Prospective buyers should focus their physical inspection on the condition of the tyre tread and the integrity of the wheel edges, specifically looking for the uneven wear patterns noted in the March 2026 advisory. During a test drive, pay close attention to the steering response and listen for any rhythmic thumping or humming noises that could indicate uneven tyre wear or potential issues with wheel bearings. The advisory regarding thin front brake pads necessitates a careful check of the braking performance; listen for any high-pitched squealing or metallic grinding during deceleration and feel for any pulsation or judder through the brake pedal, which could indicate unevenly worn discs or sticking calipers. Given the recent advisories for both tyres and brake pads, a thorough inspection of the remaining brake life is essential. Ensure that the braking system provides consistent, progressive stopping power without any pulling to one side, which could suggest uneven pad wear or a binding caliper. Because the 2025 record specifically flagged the offside rear brake pad as being worn down to the indicator, it is prudent to verify that the rear braking system has been addressed alongside the front components mentioned in the most recent test.