2016 Mercedes-Benz A 1.5L Diesel · FX16 HHD

A deteriorating near-side front outer drive shaft constant velocity boot represents the primary mechanical concern identified in the most recent test on 29 July 2026. While the vehicle has maintained a passing status since its initial recorded tests, the transition from recurring brake disc advisories in 2022 and 2023 to a specific mechanical component failure in 2026 suggests a shift in the types of wear being observed. The history shows a period of stability regarding braking components, but the recent deterioration of the CV boot introduces a risk of grease loss and subsequent joint failure if not addressed. The recorded mileage of 28,829 miles against a 2016 registration indicates a usage pattern of approximately 2,883 miles per year, which is significantly lower than the UK average. This low annual accumulation suggests the vehicle has spent considerable time stationary or has been used only for very short trips. Mechanically, such infrequent use can lead to different wear profiles than high-mileage vehicles, specifically regarding the degradation of rubber components like CV boots and the pitting of brake discs due to lack of regular friction and exposure to environmental moisture. Prospective buyers should pay close attention to the near-side front driving area during a test drive. The deterioration of the constant velocity boot can lead to clicking or popping noises when the steering is turned sharply, particularly when pulling away or maneuvering at low speeds. If the joint has already begun to suffer from grease loss or internal damage, this noise will be prominent. It is essential to verify that the recent failure has been rectified with a new boot and that the joint itself remains smooth and free of excessive play. Regarding the previous advisories for pitted or scored brake discs, although these were not flagged in the 2025 or 2026 tests, the history of surface corrosion should be noted. During a test drive, listen for any rhythmic grinding or squealing sounds from the braking system and feel for any pedal judder or vibration through the footwell when applying the brakes at various speeds. This will help determine if the previous disc wear has been managed or if the braking surfaces are currently stable.