2015 Mercedes-Benz S-Class 5.5L Petrol · N1 DAC

The vehicle’s most recent MOT tests, conducted just six months ago on 2025-11-24, confirm a clean pass with no defects recorded—despite the unusual dual entry (one pass, one fail at identical mileage). This suggests the test centre may have processed the vehicle twice for administrative reasons, but the absence of any advisories or failures in the last cycle indicates no immediate mechanical concerns. However, the pattern of repeated testing at the same mileage warrants scrutiny, as it implies either a rushed or incomplete inspection process rather than genuine roadworthiness issues. The previous cycle in 2024-01-30 also shows no defects, reinforcing that the vehicle has not failed for major mechanical failings in the last two years. Mileage progression reveals a steady accumulation of approximately 9,500 miles annually, which aligns with typical usage for a vehicle of this age. There are no prolonged gaps or abrupt spikes in mileage, though the 2024-2025 interval (covering 22,883 miles) is slightly heavier than the 2023-2024 period (22,176 miles). This consistency suggests the vehicle has been driven regularly rather than stored, reducing the risk of neglected fluid degradation or seized components. The lack of intermediate MOTs or service records means no independent verification of maintenance exists, but the mileage trend itself does not indicate excessive wear beyond what would be expected. Given the clean MOT history, a buyer should prioritise an independent inspection of high-wear components typically overlooked in basic MOT checks. The S-Class’s suspension—particularly the rear coil springs and bushes—should be examined for uneven sagging or corrosion, as these are common failure points in luxury vehicles with this mileage. Brake systems, including caliper binding and disc thickness, must be checked, especially if the vehicle has been driven hard, as the MOT does not test for excessive wear beyond the legal minimum. Structural integrity of the subframe and sills should also be assessed for signs of rust or misalignment, as these issues often develop gradually without immediate MOT failure. Finally, fluid levels and condition—brakes, steering, and transmission—should be verified, as their degradation is not always captured in a standard MOT.