2017 Mercedes-Benz A-Class 1.5L Diesel · HC05 RAM

The 2017 Mercedes-Benz A-Class most recently passed its MOT on 26 March 2026, with a single advisory noting a phone holder fitted to the windscreen obstructing the driver's view, an item the previous owner should have removed prior to the examination. Evaluating the recent MOT trend, the vehicle has exhibited a stable and broadly improving picture overall, having passed six of its last seven tests without major failure. The single failure in April 2023 was relatively minor and concerned the front windscreen washer providing insufficient fluid, a straightforward maintenance issue easily rectified. However, the two most recent tests have both flagged advisories relating to suspension arm ball joint play, first on the offside in 2025 and then on the nearside in 2024, which suggests progressive wear in the front suspension geometry rather than isolated incidents. With a recorded mileage of 67,872 miles spread across roughly nine years of service, this A-Class is accumulating around 7,541 miles annually, a figure consistent with typical mixed private and commuter usage. There are no significant gaps in the MOT record and the mileage progression appears steady and consistent, suggesting the vehicle has been in regular use rather than left standing for extended periods. This is mechanically reassuring, as consistent usage tends to keep seals, brakes, and drivetrain components in healthier working condition than a vehicle that has been left idle for long spells. The mileage remains well within the expected tolerances for a nine-year-old Mercedes, and there is no indication of rapid accumulation that would suggest hard use such as towing or high-mileage motorway driving. Given the recurring advisories concerning front suspension arm ball joint play on both sides over successive tests, a prospective buyer should prioritise a thorough inspection of the front suspension and steering geometry. On the road, listen for clonking or knocking noises from the front end when traversing speed bumps or uneven surfaces, and pay particular attention to vague steering response, uneven or feathered tyre wear across the front axle, or any vibration through the steering wheel that could indicate worn bushes, drop links, or track rod ends now operating beyond their service tolerance. These ball joints are relatively inexpensive in isolation, but if left to deteriorate they can affect tracking, accelerate tyre wear, and ultimately compromise ABS sensor readings. It would be prudent to have the front suspension professionally inspected and budget for replacement of both lower arms if the play has progressed since the 2025 advisory. Beyond the suspension concerns, the advisory regarding a coolant warning light illuminated on the dashboard in 2025 warrants investigation, as this could indicate anything from a low coolant level and air in the system through to a failing coolant temperature sensor, thermostat, or water pump. On a test drive, monitor the temperature gauge closely and verify that the heater produces consistent warmth. Although the current MOT record does not show any brake or tyre advisories, a nine-year-old vehicle with this mileage should still be physically examined for tyre sidewall perishing and cracking from age, brake disc corrosion around the outer edges, caliper slide pin binding particularly after standing, and the condition of the 12V battery which on Mercedes vehicles can become weakened through continuous parasitic draw from control modules. Finally, confirm that the brake fluid and coolant have been changed on a calendar basis regardless of mileage, verify the full service book stamp history, and ensure the cam belt or timing chain service interval has been observed, as Mercedes timing chains are generally long-lived but can still exhibit stretch and noise on high-mileage examples of this age.