2015 Mercedes-Benz Unknown 2.1L Diesel · GN15 AZP

The vehicle’s most recent MOT tests, conducted just ten months ago on 2025-07-31, reveal an unusual pattern of two consecutive failures followed by a pass—all at the same mileage of 16,115 miles. This inconsistency suggests either a temporary oversight in test preparation or a minor, correctable issue that was addressed between the second failure and the eventual pass. The preceding tests in 2024 and 2023, both at lower mileages (12,208 and 8,916 miles respectively), also show no recorded defects, indicating no obvious recurring mechanical failures. However, the lack of defects does not preclude hidden wear, particularly in high-stress components like suspension bushes or brake calipers, which are not always captured in standard MOT checks. The recorded mileage of 16,115 miles over approximately 11 years—roughly 1,465 miles annually—is unusually low for a vehicle of this age, suggesting either infrequent use or prolonged periods of storage. The gap between the 2023 and 2024 tests spans 11 months, during which the vehicle accumulated 3,292 miles, while the interval between 2024 and 2025 saw a similar 3,907 miles. This steady but modest mileage accumulation implies limited exposure to severe wear, though it also raises questions about whether critical fluids (e.g., brake fluid, coolant, differential oil) were regularly serviced. The absence of advisory notes in any test further supports that no major components were flagged for imminent failure, but this does not rule out deferred maintenance. Given the lack of specific defect details in the MOT history, a prospective buyer should prioritise a thorough inspection of suspension integrity, particularly the condition of coil springs, bushes, and shock absorbers, as these are common wear items that may not always trigger MOT failures. The brakes, while not explicitly mentioned, warrant close examination for uneven wear, binding calipers, or corrosion on the discs and callipers, especially given the vehicle’s age. Additionally, the underbody should be scrutinised for signs of structural corrosion, particularly around the sills, wheel arches, and exhaust system, as these areas are prone to deterioration even with low mileage. Finally, verifying the service history for fluid changes and timing belt (if applicable) is essential, as these are not MOT-visible but critical to long-term reliability.