2012 Mercedes-Benz ML 3.0L Diesel · YC62 AEM

The most recent MOT history for this 2012 Mercedes-Benz ML shows a concerning instability in roadworthiness just before the current test date. The vehicle failed on 2025-04-30 at 104,009 miles, yet passed the subsequent test exactly one day later at the same mileage without any recorded defects. This abrupt reversal suggests either an administrative oversight or a last-minute repair that was not substantiated by the test itself. The previous clean passes in 2024 and 2023—at 90,655 and 78,607 miles respectively—indicate no prior issues were detected during standard MOT testing, but the recent anomaly warrants scrutiny. The lack of advisories or defects in earlier tests implies the vehicle has not experienced systematic failures, though the sudden pass/fail discrepancy at the same mileage raises questions about maintenance consistency. The mileage progression reveals a steady but typical usage pattern for a vehicle of this age. Over the past four years, the ML accumulated approximately 13,354 miles annually, which aligns with average usage for a luxury SUV. There are no extreme gaps or spikes in mileage between tests, though the 2022-2023 interval shows a slower accumulation—only 11,296 miles—suggesting a period of reduced usage. The most notable outlier is the identical mileage recorded for the April 2025 fail and pass, which contradicts normal odometer progression and implies either a reset or an error in reporting. This inconsistency alone should prompt a buyer to verify the odometer reading independently. Given the lack of recorded defects in prior MOTs, the primary focus for an in-person inspection should centre on components that commonly fail without immediate MOT failings but still pose long-term risks. The sudden pass/fail at the same mileage suggests potential issues with brake binding, suspension wear (coil springs, bushes, or dampers), or exhaust emissions systems that might have been adjusted or replaced just before the retest. The vehicle’s age—now 14 years old—demands particular attention to structural integrity, especially around wheel arches, subframes, and the rear axle, where corrosion can compromise safety without always triggering an MOT fail. Additionally, the lack of advisories in earlier tests does not guarantee these areas are sound; a thorough examination of suspension geometry, brake caliper binding, and wheel bearing condition is essential, as these can degrade silently over time. The buyer should also confirm the authenticity of the odometer reading and request evidence of any repairs made between the fail and pass tests.