2018 Mercedes-Benz GLC 250 D 4MATIC AMG Line Auto 2.1L Heavy oil · KK18 UON

The most recent DVSA MOT test on this Mercedes-Benz GLC 250 d 4MATIC AMG Line was conducted on 5 October 2024, resulting in a pass with no defects or advisories recorded against the vehicle. Looking back through the documented history, both the 2023 and 2022 tests also returned clean passes with no advisories, indicating a consistent pattern of roadworthy condition at the time of each annual inspection. With three consecutive pass entries free from recorded advisories, the documented maintenance trend appears stable and well-managed, suggesting that the vehicle has not been presenting any immediate testable concerns over the observed period. That said, a clean MOT history does not necessarily equate to a fully serviced vehicle, and any prospective purchase should still be supported by a comprehensive dealer or independent inspection. The recorded mileage of 70,510 miles across approximately eight years of registration equates to an annual usage rate of roughly 8,800 miles, which sits comfortably within the average range for a UK-registered vehicle of this age and class. This is a typical mileage profile for a premium SUV that has likely been used for a balanced mix of commuting and longer journeys, rather than predominantly short urban trips or extended periods of standing. Such consistent usage generally benefits mechanical components, particularly the diesel engine, 4MATIC drivetrain, and exhaust after-treatment system, as regular running under load helps to clear carbon deposits, regenerate the diesel particulate filter, and prevent moisture accumulation within the engine oils and differentials. However, it is worth noting that the MOT history provided shows annual tests in 2022, 2023, and 2024 without recorded mileage progression between those specific dates, so it is advisable to verify the full mileage continuity through the service book, V5C document, and any accompanying invoices to ensure consistency. Given the clean MOT record and the vehicle's age, attention during a pre-purchase inspection should be directed towards age-related degradation rather than any specific flagged defects. Tyres fitted to the GLC should be examined closely for sidewall perishing and cracking, which commonly affects eight-year-old rubber even where tread depth remains legal, and a check of manufacture date codes on the sidewalls is recommended. The 12V battery, which on Mercedes-Benz vehicles of this generation is often located in the engine bay or beneath the rear seat, should be load-tested as battery failure is a frequent issue in vehicles of this age, and a fresh battery may be imminent. Brake discs and calipers should be inspected for corrosion, surface pitting, or any signs of binding, particularly given the typical wet UK climate, and a test drive should include firm brake applications from higher speeds to confirm there is no shudder, pull, or uneven retardation. Additionally, all fluids including engine oil, automatic transmission fluid, coolant, brake fluid, and the AdBlue system should be verified as current, as these degrade on a calendar basis regardless of mileage, with brake fluid in particular requiring renewal every two years due to its hygroscopic nature. From a structural and underbody perspective, the GLC should be raised on a ramp to check for any signs of corrosion, oil leaks from the OM651 diesel unit, condition of the exhaust system, and the integrity of the rear differential and 4MATIC transfer case seals, as fluid weeps from these areas are not uncommon on higher-mileage examples. The coil spring assemblies and suspension bushes, including the front lower wishbone and rear trailing arm bushings, should be inspected for cracking or splitting, and a test drive over uneven surfaces will typically reveal any clonks or knocks indicative of worn suspension components. Diesel-specific items such as the EGR valve, turbocharger actuator, and intercooler piping should be assessed for oil contamination or boost leaks, while the diesel particulate filter should ideally be interrogated for its live fill level using STAR diagnostics. Finally, ensuring that the digital service history within the Mercedes-Benz system is up to date, or that a comprehensive independent service log is present, will provide further confidence that this well-presented AMG Line example has been correctly maintained throughout its life.