2009 Mercedes-Benz ML 3.0L Diesel · YP09 YJB

The defining characteristic of this 2009 Mercedes-Benz ML is its puzzling MOT record showing repeated test entries clustered tightly together with no defects recorded on any pass or failure, which warrants direct enquiry before purchase. The most recent test on 1 October 2025 shows a pass with no advisories, yet it followed two failures four and eight days earlier, also recorded with no defects. The same pattern repeats in October 2023, where a pass on the same date as a recorded failure, both clean of defects. This sequence is unusual and suggests administrative anomalies, such as duplicate test submissions, rather than intermittent mechanical issues that were simply repaired between attempts. A buyer should request sight of the actual pass certificates and any repair invoices to clarify whether genuine mechanical rectification took place between the failures. Annual mileage of approximately 6,422 miles over seventeen years sits broadly in line with typical accumulation for a vehicle of this age, suggesting neither heavy use nor extended periods off the road that would exacerbate corrosion or perishable component degradation. There is a two-year gap between the October 2023 test cluster and the late September 2025 tests, which represents the only notable interval in the recorded mileage progression. No mileage discrepancy is evident across the five recorded test dates, and the figure appears consistent at each entry. Mechanically, this level of use means the engine, transmission, and final drive components should not be excessively worn, though age-related deterioration of rubber and polymer items will still proceed regardless of mileage covered. Given the absence of any advisories across the visible test history, targeted inspection should focus on components commonly affected on the M-Class platform at this age, particularly the air suspension system if fitted, the front lower control arm bushes, and the rear subframe mounting points where corrosion is known to develop. On a test drive, listen for clonking or knocking from the front suspension over uneven surfaces, which would indicate worn thrust arms or ball joints, and pay particular attention to any unusual body floatiness or failure to maintain ride height, as the airmatic system is a known weakness even when not flagged at MOT. Steering should remain precise without vibration through the wheel, and the transmission should change smoothly without harsh downshifts when pulling away. Brake feel should be firm and progressive, with no judder under heavy pedal pressure that would indicate disc warping, and the vehicle should pull up in a straight line without pulling to either side. Inspect the underside thoroughly for any surface corrosion on suspension arms, brake pipes running along the chassis, and the exhaust system, as these areas tend to deteriorate on older Mercedes SUVs regardless of test outcomes. Check for any signs of oil misting around the engine, as seals on the higher-mileage V6 and V8 units fitted to this generation can weep. Verify that all dashboard warning lights extinguish promptly after start-up and that the four-wheel-drive system engages smoothly, as transfer case issues are documented on this chassis. Finally, confirm the precise reason for the multiple test attempts in 2023 and 2025 by reviewing the physical certificates, as the clean advisory history alone does not fully account for the failed entries.