2017 Mercedes-Benz GLC 2.1L Diesel · SW17 XOA

The most recent MOT recorded on 13 June 2023 resulted in a failure, citing a fractured off‑side rear upper coil spring and an excessively worn off‑side front suspension arm ball joint, both classified as major defects. Prior to this, the vehicle enjoyed three consecutive passes (2020, 2021 and 2022) with no recorded faults, indicating a previously stable maintenance record that has now deteriorated due to emerging suspension issues. At 40,641 miles after nine years on the road the average annual mileage works out to roughly 4,500 mi, well below the typical UK average of 8‑10 000 mi per year. Such low utilisation often points to light, possibly intermittent use or extended periods of storage. While low mileage reduces cumulative wear on engine and drivetrain components, prolonged inactivity can accelerate ageing of rubber components, corrosion of metal parts and degradation of fluids, all of which merit close scrutiny. The buyer should give the suspension a thorough examination. Inspect the off‑side rear coil spring for any signs of fatigue, cracks or corrosion at the mounting points, and verify that the spring has been correctly replaced if repairs were carried out after the MOT failure. Examine the front ball joint for excessive play by rocking the wheel at the 12 o’clock and 6 o’clock positions; any clunk, looseness or uneven tyre wear on the off‑side front wheel could indicate the joint is still marginal. While on the road, listen for metallic knocks over bumps, feel for any wandering or vague steering feel, and check that the steering rack remains tight. It is prudent to have the entire suspension assembly—including control arm bushes, tie‑rod ends and rear damper mounts—checked for wear, and to request a post‑repair MOT certificate confirming that the major defects have been rectified and the vehicle is now road‑worthy. Given the vehicle’s age and low‑mileage profile, the buyer should also verify the condition of age‑sensitive items. Inspect all four tyres for sidewall cracking, dry rot or uneven tread, remembering that tyre rubber can deteriorate after six years regardless of tread depth. Test the 12 V battery voltage and assess its ability to hold charge, as batteries left idle for long periods often lose capacity. Examine brake discs and pads for surface rust, glazing or uneven wear, and ensure calipers move freely without binding. Finally, confirm that engine oil, coolant, brake fluid and transmission fluid have been changed in line with calendar‑based service intervals, and review the service book for any gaps that might mask missed maintenance. A comprehensive visual and road‑test inspection covering these points will give a clear picture of the GLC’s current roadworthiness and any imminent maintenance that may be required.