2021 Mercedes-Benz GLC 300 AMG Line Prem D 4M A 1.9L Diesel · SN53 APS

The vehicle is currently roadworthy, but the maintenance history reveals a persistent trend of deferred brake maintenance. In the most recent test in February 2026 at 69,919 miles, the tester flagged thin front brake pads and worn, scored discs on both sides. This follows a pattern of pitting and scoring noted in both 2024 and 2025, indicating that the owner consistently allows components to reach their wear limits rather than performing preventative replacements. The vehicle has covered significant mileage for its five-year age, averaging approximately 14,000 miles per year. Between the February 2024 test at 36,532 miles and the February 2025 test at 51,912 miles, the car clocked over 15,000 miles in just twelve months. This consistent high-mile usage suggests motorway driving, which typically accelerates the wear on consumable components but also explains the rapid degradation of the braking hardware recorded across multiple inspections. A buyer must conduct a thorough physical inspection of the braking system to ensure the front components have been addressed since the February 2026 advisory. Given the recurring reports of pitted discs on both front and rear axles since 2024, the inspector should check for seized caliper pistons or uneven wear that might be causing premature surface corrosion. Pay attention to the suspension bushings and coil springs, as the high annual mileage places significant stress on these mechanical components of the AMG Line chassis.