2018 Mercedes-Benz GLC 2.1L Diesel · LR18 BGF

The most recent MOT, carried out on 16 May 2023, resulted in a Pass with a single advisory concerning the nearside rear tyre being close to the legal tread limit and showing edge wear. The preceding tests in April 2022 and April 2021 also passed, the latter noting a similar advisory for both rear tyres and minor chips to the windscreen. The pattern shows a generally stable maintenance record with no outright failures, but the recurring tyre‑wear advisory indicates that tyre condition has been a marginal issue over the last few years and should be monitored closely. At eight years old the GLC has logged 32,495 miles, which works out to just over 4,000 miles per annum – considerably below the average for a vehicle of this class. Such low utilisation often points to periods of infrequent use or prolonged storage, which can be as consequential as high mileage in terms of component ageing. The modest annual mileage reduces the expected wear on engine, transmission and suspension elements, but it also raises the likelihood of age‑related degradation such as rubber hardening, fluid oxidation and corrosion in parts that sit idle for extended periods. When you inspect the vehicle, give the tyre set a thorough visual and tactile appraisal. Confirm that the tread depth on all four tyres exceeds 1.6 mm and that the sidewalls are free of cracks, bulges or dry‑rot, especially on the rear nearside where the MOT advisory was raised. Uneven wear patterns may betray mis‑alignment, worn suspension bushes or a failing rear axle bearing; a quick road test should reveal any clunk, squeak or vibration when cornering or under braking. Check the brakes for surface rust on the discs, especially if the car has been stationary for long stretches, and verify that the pads still have sufficient material and that the calipers move freely without binding. Given the vehicle’s age, also examine the 12‑volt battery for sulphation and ensure it holds charge under load, as batteries left idle can lose capacity quickly. Inspect all fluid reservoirs – engine oil, coolant, brake fluid and power‑steering fluid – for colour change, sediment or a gummy texture, and consider a full fluid change if the service book does not show recent calendar‑based servicing. Look for any signs of corrosion on the chassis, underbody and exhaust, particularly around the wheel arches and suspension mounting points. Finally, request a complete service history; regular oil changes, filter replacements and any scheduled timing‑chain or valve‑train work will give you confidence that the low‑mileage car has been kept in a mechanically sound condition despite its relatively quiet life.