2019 Mercedes-Benz GLC 2.1L Diesel · LP19 HKA

A dangerous tyre defect and worn-out front brakes dominate this GLC's recent history: on 1 December 2025 the vehicle failed its MOT with the nearside front tyre showing exposed ply or cords, the offside front tyre worn to the legal limit on its edge, front brake pads worn down to the wear indicator, and front discs worn, pitted and scored. A same-day retest passed with no defects recorded, indicating these items were rectified immediately, but the failure did not arrive without warning. The November 2024 test had already flagged the nearside front tyre wearing on its outer edge, front pads wearing thin, and front discs scored and rusty on the inner face, meaning the braking and tyre issues were allowed to progress from advisory to failure over the following year. Earlier history is cleaner, with passes in 2022 and 2023 recording no defects, though an April 2022 test noted both rear tyres worn close to the legal limit. The overall trend is therefore one of recurring tyre and front brake wear rather than structural or corrosion concerns. Recorded mileage stands at 40,536 miles at roughly seven years old, an average of about 5,800 miles per year, which is low for the age. Testing has been consistent with no significant gaps, and the annual November-to-December rhythm suggests regular, steady use rather than long lay-ups. Even so, the pattern of edge wear on front tyres across consecutive tests, combined with discs described as rusty on the inner face, is consistent with a vehicle covering modest distances where braking components see light but persistent wear. Low annual mileage does not exempt consumables from ageing, and the fact that front pads reached the wear indicator at around 40,000 miles is unremarkable, but the progression from advisory to dangerous defect within twelve months warrants attention to how promptly wear items are addressed going forward. For a prospective buyer, the priority is verifying the quality of the December 2025 rectification work. Confirm that both front tyres were replaced as a matched pair of reputable brand and correct load rating, and that the front pads and discs were renewed together rather than pads alone fitted to worn discs, since the discs were already scored and pitted at the 2024 test. On a test drive, brake firmly from motorway speed in a safe location and feel for any judder through the pedal or steering wheel, which would indicate disc thickness variation or warping, and listen for any grinding or squeal under light braking that could suggest uneven pad bedding. The repeated edge wear on the front tyres, noted in both 2024 and 2025, raises the possibility of wheel alignment being out of specification or wear in front suspension components such as control arm bushes or ball joints. During the test drive, check whether the vehicle tracks straight on a level road without steering correction, and listen for knocks or clunks over uneven surfaces. Inspect the new front tyres for any early signs of uneven shoulder wear, and ask for evidence of a four-wheel alignment carried out at the time of the tyre replacement. The rear tyre wear flagged in 2022 appears resolved, but a quick check of tread depth across all four corners remains worthwhile. If the braking work and alignment are documented and the drive is clean, the record shows a vehicle whose issues have been confined to routine consumables rather than anything structural.