2013 Mercedes-Benz S-Class 3.0L Diesel · P944 AFC

The vehicle’s MOT history presents a stable but irregular pattern of roadworthiness, with no mechanical defects recorded in any of the five tests spanning July 2023 to July 2025. The most recent evaluation, conducted on 16 July 2025 at 93,619 miles, passed without advisories or failures, suggesting the car met all DVSA thresholds for structural integrity, emissions, lighting, and core safety systems at that point. However, the repeated failures in July 2024 and 2025—both occurring on the same day as the subsequent pass—are unusual, as they imply a transient issue resolved within hours, possibly linked to a minor administrative or procedural oversight rather than a recurring mechanical flaw. The absence of defects across all tests indicates no major wear trends in brakes, suspension, or exhaust systems, but the lack of advisories also raises questions about whether routine maintenance was deferred or simply not required in this period. The mileage accumulation of 93,619 miles over 13 years aligns closely with the average for its age, averaging roughly 7,200 miles annually, which is neither excessively high nor low. The gaps between tests are consistent, with each MOT falling within a five-day window in July of successive years, suggesting the vehicle was presented for testing at roughly the same interval. The mileage jump between July 2024 (85,193 miles) and July 2025 (93,619 miles) indicates approximately 8,426 miles covered in the year, a modest increase that doesn’t signal aggressive driving or neglect. The clean record across all tests, combined with this steady mileage, implies the car has been used regularly but not pushed to extremes, with no obvious signs of abuse or prolonged disuse. Given the absence of defects or advisories, a buyer should still prioritise a thorough pre-purchase inspection, particularly focusing on components prone to silent degradation in luxury vehicles of this age. The suspension—including coil springs, anti-roll bars, and bushings—should be checked for wear, as these often degrade without immediate MOT impact. Braking systems, including calipers, discs, and pads, merit close scrutiny, even though no failures were recorded; binding or uneven wear can develop without triggering a test failure. Structural corrosion, especially around wheel arches, sills, and underbody panels, should be assessed, as Mercedes S-Class models from this era are susceptible to surface rust despite passing MOTs. Finally, while the MOT history is clean, the repeated failures on the same day in 2024 and 2025 warrant clarification from the seller—whether they stemmed from a test centre error or an easily rectified issue could influence long-term reliability.