2013 Mercedes-Benz ML 3.0L Diesel · AD11 BSD

The vehicle was last presented for MOT on 24 December 2025 and achieved a Pass, although the examining tester recorded an advisory concerning a worn rear coil spring under section 5.3.1 (b) (i) of the inspection manual. Reviewing the more recent MOT history, the trend is largely stable but not entirely unblemished. The 2023 test returned a clean pass with no advisories, while the 2022 test noted rear inner brake pads wearing thin alongside an advisory for an undertray obscuring underside components. The 2025 test then identified multiple tyres worn close to the legal limit with edge wear, rear brake pads once again recorded as wearing thin, and the most recent 2025 test highlighted a worn rear coil spring. This pattern of advisories, although not resulting in failures, suggests that consumable wear items are being identified at each inspection, which is consistent with a vehicle of this age and mileage but does warrant attention before further deterioration leads to a failure. The recorded mileage of 86,806 miles over approximately 13 years equates to around 6,677 miles annually, which is broadly typical for a large premium SUV of this era and indicates regular but moderate usage. The MOT record shows no significant gaps in annual testing, suggesting the vehicle has been in continuous road use rather than left standing for prolonged periods. Mechanical implications of this annual rate are generally favourable: it is high enough to prevent the issues associated with low-mileage corrosion and seized components, but not so excessive that high-wear items such as the transmission, drivetrain, or suspension should have suffered extreme fatigue. Nonetheless, even at moderate mileage, the accumulated wear over thirteen years places many of the vehicle's original rubber, fluid, and electrical components into their replacement window. Prospective buyers should treat the rear coil spring advisory as the most mechanically significant recorded item. Coil springs on the Mercedes-Benz ML of this generation are susceptible to sagging, corrosion, and fracture, particularly at the lower coils, and a worn spring can produce symptoms such as a noticeable rear sag, uneven ride height, or a clunking noise over uneven surfaces caused by the spring shifting on its seat. A test drive should be conducted over varied road surfaces and, if possible, with the vehicle loaded to expose any weakness. Visually, the gap between the spring and its mounting seat can be inspected for signs of play, and the ride height should be compared side to side. Replacement springs, ideally supplied in pairs to maintain balance, should be budgeted for if deterioration is evident, as a fractured coil spring would result in an MOT failure. Given the vehicle's age, several age-related inspections should be carried out regardless of the MOT advisories. The tyres should be examined for sidewall cracking or perishing caused by UV exposure, even if the tread depth remains legal, and the brake discs should be checked for corrosion or lipping, particularly if the vehicle has been used predominantly for short journeys. The 12V battery is likely approaching the end of its service life and should be tested for state of health, while all fluid systems including brake fluid, coolant, and the automatic transmission fluid are due for replacement on a calendar basis rather than purely by mileage. Confirmation of a complete service history with documented stamp intervals would greatly strengthen the mechanical case for purchase, and it would also be prudent to verify that the undertrays referenced in the 2022 advisory are still in place, as their absence may have exposed underbody components to additional corrosion and road damage.