2017 Mercedes-Benz GLC 2.1L Diesel · ON05 ADE

This Mercedes-Benz GLC has demonstrated a stable roadworthiness trend over its MOT history, with the most recent test on 20 August 2025 confirming no defects at 48,501 miles. The vehicle has passed every test since 2021, though the September 2024 inspection at 39,659 miles recorded a single advisory—nearside front tyre wear approaching the legal limit—indicating a minor, correctable issue rather than a systemic failure. The absence of advisories or failures in the 2023 and 2021 tests suggests consistent compliance with basic maintenance, though the 2024 advisory implies delayed attention to tyre rotation or alignment. The recorded mileage of 48,501 miles over nine years equates to approximately 5,389 miles annually, which is unusually low for a vehicle of this age. The largest gap between tests spans 18 months, from September 2023 (36,161 miles) to September 2024 (39,659 miles), indicating extended periods of inactivity. This could imply storage or infrequent use, which may have mitigated some wear but also risks fluid degradation or component deterioration from prolonged stagnation. The steady mileage accumulation between 2021 and 2023—covering 9,149 miles in two years—does not suggest aggressive driving, but the lack of advisories in those periods reinforces the impression of responsible, albeit irregular, maintenance. A buyer should prioritise an in-person inspection of the suspension components, particularly the nearside front wheel bearing and associated bushes, given the tyre advisory in 2024. The absence of brake-related advisories or failures in recent tests is reassuring, but the rear brakes should still be checked for binding or uneven wear, as the MOT does not always detect subtle issues. Corrosion at wheel arches, subframe, and suspension mounts should be examined, particularly if the vehicle has been stored in wet conditions. Fluid levels—brake, power steering, and coolant—should be verified, as prolonged inactivity can lead to contamination or degradation. Finally, the exhaust system and catalytic converter should be inspected for leaks or damage, as emissions-related failures are not uncommon in this model range.