2013 Mercedes-Benz ML 3.0L Diesel · A27 DHD

A recurring theme across the MOT record is the progressive wear of the front brake discs, which have been flagged in every test from 2021 through 2025, most recently as worn, pitted or scored but not seriously weakened. Alongside this, an oil leak has been noted on several occasions, and a single headlamp failure caused a failure in 2022. Apart from these items the vehicle has otherwise passed its annual tests, indicating that the majority of the inspected systems have met the minimum safety standards, but the brake disc condition and oil containment remain the principal mechanical concerns. With 94,582 mi recorded over a 13‑year lifespan the average annual mileage is roughly 7,300 mi, a figure that sits comfortably within normal usage patterns for a luxury SUV of this age. The MOT history shows consistent yearly testing with no significant gaps, suggesting the mileage figure is reliable and that the vehicle has not experienced periods of prolonged inactivity that could mask latent corrosion or component degradation. The moderate mileage implies that wear on consumables such as brakes, tyres and suspension components will be in line with typical service intervals, but the repeated brake disc advisories indicate that the front braking system is approaching the end of its service life. Prospective buyers should inspect the front brake discs for remaining thickness, surface scoring and any signs of uneven wear; a pulsating pedal, squealing or grinding under braking would corroborate the MOT advisories and may warrant immediate disc replacement and possible caliper servicing. The oil leak, repeatedly described as “not excessive,” should be traced – likely sources include the valve cover gasket or oil pan – and the underside of the vehicle examined for fresh oil deposits; monitoring oil level over a short drive will reveal whether the leak is worsening. Verify that both headlamps illuminate fully on dipped and main beam, as the off‑side dipped beam failure in 2022 suggests a possible wiring or bulb issue that may have been remedied but should be confirmed. Additional checks should include the brake pedal surface, which has been noted as wearing smooth, to ensure a firm, consistent pedal feel without excessive travel. Confirm that the rear adult seatbelts are fully accessible and functional, as child seats have previously obstructed inspection. Test the windscreen washer system for adequate fluid delivery and spray pattern, addressing the 2021 washer‑fluid insufficiency. Finally, a brief road test listening for any clunk or knock over bumps will help reveal any emerging suspension or steering bush wear that has not yet been captured by MOT advisories. A qualified mechanic’s inspection of the brake discs and oil leak source before purchase would provide the most reliable assessment of remaining service life.