2016 Mercedes-Benz S-Class 3.0L Diesel · SD16 ACS

The most recent MOT test on 2025-11-06 confirms the vehicle remains roadworthy at 145,262 miles, with no defects or advisories recorded. This suggests a stable maintenance pattern over the past two years, as all preceding tests—from 2021 to 2023—also passed without fail. The absence of recurring advisories or defects implies that major components such as suspension bushes, coil springs, binding calipers, or exhaust emissions have not been compromised, though this does not preclude hidden wear. The clean record is particularly notable given the vehicle’s age and mileage, as luxury models of this class often develop subtle issues in steering dampers, electrical systems, or drivetrain seals over time. The mileage progression reveals a consistent annual average of approximately 14,500 miles, which is high for a vehicle of this age. Between the 2021 and 2022 tests, the odometer advanced by 12,101 miles in just over a year, while the jump from 2022 to 2023 covered 13,000 miles. This suggests the vehicle has seen regular, heavy use rather than prolonged storage, which could accelerate wear on consumables like brake discs, suspension mounts, and tyres. The most recent test was conducted just six months ago, ensuring the latest MOT standards were met, but the next due date—now overdue—will be critical to reassess conditions after another 12 months of operation. Given the lack of recorded defects, a buyer should prioritise a thorough inspection of high-wear areas that are not always captured in a standard MOT. Focus on the suspension geometry—particularly the rear air suspension (if fitted) or hydraulic struts—for uneven sagging or leaks, as these systems degrade progressively. The brake system warrants close examination, including rear caliper binding, disc thickness, and pad material, as high mileage can lead to uneven wear or corrosion. Electrical components, such as the central locking, infotainment system, and high-beam function, should be tested for intermittent faults, which are common in older luxury vehicles. Finally, inspect the underbody for corrosion around the sills, subframe, and exhaust manifolds, as these areas are prone to hidden deterioration despite passing visual MOT checks.