2019 Mercedes-Benz GLC 300 AMG Line Prem + D 4M A 1.9L Diesel · AY69 LXJ

A persistent mechanical theme emerges from the MOT record of this 2019 Mercedes-Benz GLC 300, centred on the offside front suspension arm ball joint, which has carried an advisory for slight play at three consecutive tests in 2023, 2024, and 2026, with the latest pass on 7 August 2026 also noting the same wear pattern. The single failure occurred in September 2025 and was tyre-related rather than structural, with both rear tyres presenting cuts exposing ply or cord alongside an advisory noting inner edge wear on the offside front tyre; this was rectified the following day for a clean pass. The suspension ball joint advisory has not progressed to a failure category across these three appearances, but its recurrence over a three-year window indicates a wear trend rather than a one-off observation, and this is the principal mechanical risk factor identified in the vehicle's history. With a recorded mileage of 66,527 against an age of approximately seven years, this GLC has averaged around 9,500 miles annually, which sits broadly in line with typical usage for a vehicle of its class and age. The MOT test cadence has been annual and consistent since first testability, with no extended off-road gaps and no anomalous mileage jumps between recorded tests, indicating steady rather than sporadic use. At this annual mileage, wear on consumables such as brake pads and discs, tyres, and suspension bushes would be expected to track closely with time in service rather than accumulate disproportionately quickly, though the recurring suspension advisory demonstrates that component-specific wear is still advancing within that normal usage envelope. A prospective buyer should focus their physical inspection on the offside front suspension assembly, as the repeated ball joint play advisory is the most significant flag in the history. On a test drive, listen for any knocking or clonking from the front end, particularly over uneven surfaces, speed bumps, and during slow-speed cornering where load transfers onto the outer suspension arm. Any worsening of steering precision, vague self-centring, or a clonking transmitted through the steering wheel under braking would warrant immediate professional attention, as a ball joint that has progressed beyond slight play represents a clear safety concern. It would also be prudent to have the offside front lower control arm, bush, and related linkages physically inspected on a ramp, since the play noted by DVSA testers could potentially indicate wear in adjacent components that have not yet been formally flagged. The 2025 tyre failure is worth examining in context rather than treating as a routine item, as cuts deep enough to reach the ply or cord on both rear tyres simultaneously can be consistent with kerbing damage, road debris strike, or simply aged rubber nearing the end of its service life. Inspect all four tyres for uneven shoulder wear, particularly on the inner edge of the offside front as previously noted, and check the DOT date stamps to confirm the tyres fitted at replacement were within a reasonable age window. The 2023 minor advisory regarding reduced daytime running lamp intensity on the nearside front should also be verified cleared, as a failing LED module or corroded connector on these units can recur. Beyond these specific points, a standard pre-purchase inspection covering brake disc and pad condition, fluid states, and a thorough underbody check for any corrosion or oil seepage would round out a sensible evaluation given the documented suspension wear pattern and the vehicle's mid-life mileage position.