2013 Mercedes-Benz A-Class 1.5L Diesel · WF63 FNU

A pattern of repeated anti-roll bar ball joint wear is the defining mechanical theme in this A-Class record. Both front anti-roll bar linkage ball joints were flagged with severely deteriorated dust covers as Minors in July 2024, and by the July 2025 retest those joints had deteriorated further, with the dust covers failing to keep dirt out and the offside joint recorded as excessively worn. Despite these failures, the vehicle passed its 2025 and 2026 MOT tests with no defects recorded, indicating the components were rectified prior to the most recent examinations. Across eight recorded tests between 2021 and 2026 there are two failures, one advisory on front brake linings, and the escalating anti-roll bar issue, while the 2023 and 2021 tests were clean. The overall trend therefore shows a recurring front suspension weakness rather than systemic decline, but a buyer should treat the anti-roll bar hardware as a known weakness on this chassis rather than an isolated event. With 128,056 miles recorded over thirteen years, the vehicle is accumulating roughly 9,850 miles annually, which is broadly typical for its age and suggests consistent regular use rather than extended periods off the road. The MOT history shows annual testing from 2021 onwards with no multi-year gaps, supporting a picture of continuous rather than sporadic use. At this mileage the mechanical priorities shift towards consumables and chassis components: brake discs, pads, calipers, suspension bushes, coil springs, engine and gearbox mountings, and drive shafts. The 2022 advisory on thinning front brake linings was a routine wear item at the time, but front brake components should be expected to require attention again given the further mileage covered since. An annual figure close to ten thousand miles generally indicates higher wear on friction and chassis parts than would be seen on a low-mileage example, even though it avoids the specific risks associated with prolonged standing. A prospective buyer should place particular emphasis on the front anti-roll bar assembly during inspection and any test drive, given the documented progression from deteriorated dust covers through to an excessively worn joint within twelve months. On the road, listen for clonking or rattling noises from the front suspension over uneven surfaces, particularly over speed humps and broken tarmac, and feel for vagueness or a slight delay in steering response during direction changes. With the engine off, the front wheels should be rocked laterally to detect play in the anti-roll bar linkages, and the ball joints themselves should be inspected for perished or split gaiters, grease leakage, and any visible free movement. Additionally, inspect the rear registration plate lens and backing for fading or peeling, as the 2025 failure cited an illegible rear plate, and confirm both front and rear wiper blades clear the screen fully, addressing the 2024 wiper defects. Beyond the anti-roll bar, the test drive should focus on the other wear items expected at this mileage. The brakes should be checked for judder or vibration through the pedal under firm application, suggesting warped front discs, and for any pulling to one side which can indicate binding calipers or uneven pad wear. Listen for any knocks or creaks from the rear suspension over undulating roads, which can point to worn bushes or weakened coil springs, and feel for vibration through the steering wheel at speed that may indicate wheel balance or tracking issues. The underbody should be examined on a ramp for any signs of corrosion, exhaust leaks, or oil seepage from the engine and gearbox, and the condition of the underbody covers noted should be confirmed, as these were recorded as obscuring some components during the 2024 test. A compression test or diagnostic read for any stored engine management faults would be prudent on a diesel or petrol unit of this age and mileage, alongside checking for smoke from the exhaust on start-up and under load.