2012 Mercedes-Benz ML 250 2.1L Diesel · CE12 VCW

With 179,845 miles on the odometer and a service life spanning roughly fourteen years, this ML 250 presents a mechanical narrative dominated by repeated advisories clustered around nearside consumables. The most recent test on 8 June 2026 returned a clean pass with no defects recorded, which on the surface suggests stable roadworthiness, but the prior test at the same station on 24 June 2025 flagged an identical suite of issues on both the pass and failure entries that day: nearside front brake disc wear, a damaged nearside front seat belt flexible stalk, nearside rear brake disc wear, fraying on the nearside rear seat belt webbing, and perishing on the nearside rear tyre. The same nearside rear tyre perishing was also noted in 2024, and front and rear nearside tyre wear was flagged in 2023, establishing a clear pattern of nearside component attention across three consecutive test cycles. The lone failure on 24 June 2025 does not specify which item caused the fail, but it occurred on the same day as the pass, suggesting a quick rectification of a minor item that allowed the vehicle to pass shortly after. Overall, the trajectory appears stable but maintenance-intensive on the nearside, with no structural or corrosion advisories appearing anywhere in the record. The annual mileage accumulation of approximately 12,846 miles is notably high for a fourteen-year-old SUV of this class, indicating consistent, sustained use rather than long periods of standing or light weekend driving. There are no significant gaps between test dates, with annual MOTs recorded consistently from 2023 through 2026, confirming the vehicle has remained in regular service throughout. High-mileage diesel ML chassis of this era place above-average demand on the engine and transmission mounts, the seven-speed automatic torque converter and mechatronic seal, the diesel particulate filter, and the air suspension compressor and valve block, alongside the multi-link front suspension geometry. The 2024 advisory noting fitted covers obscuring certain testable items is also worth bearing in mind, as it means corrosion on hidden structural components and underbody seams could have progressed without formal documentation in the record. A prospective buyer should physically inspect the nearside front and rear brake discs for lipping, hot spots, and surface scoring, as the pattern of disc wear advisories over consecutive years points toward discs that may now be at or near their minimum thickness, particularly given the high annual mileage. The damaged nearside front seat belt stalk and frayed nearside rear webbing warrant careful functional testing of the latch, retraction, and pretensioner operation, as any further deterioration would represent a safety failure rather than a mere advisory. The nearside rear tyre has been flagged for perishing on two separate occasions, so a close examination of the sidewall and inner shoulder for cracking is essential, and replacement with matching load-rated tyres should be budgeted for if not already addressed. On a road test, particular attention should be paid to the feel of the brake pedal, listening for any judder or pulsing under firm application that would confirm brake disc runout, and observing whether the vehicle pulls toward the nearside under braking, which would corroborate uneven disc wear. The suspension should be exercised over uneven surfaces and speed humps, listening for clonking from the front lower wishbone arms, anti-roll bar drop links, and the upper control arm ball joints, all known wear items on the W164 ML platform at this mileage. Steering should be checked for vagueness or knocking through the rack mount, and the air suspension should be observed rising and settling smoothly on start-up, as compressor wear and air leaks in the strut bellows are common failures that would not appear on an MOT but would prove costly. Finally, given the high-mileage diesel context, a thorough diagnostic scan for stored fault codes relating to the DPF pressure differential, turbocharger actuator, injector balancing, and EGR valve would be a prudent step before purchase.