2016 Mercedes-Benz S-Class 5.5L Petrol · RS63 AMG

The latest DVSA MOT test on the 2016 Mercedes-Benz S-Class, conducted on 2026-06-06, resulted in a clean pass with no recorded defects, marking a positive continuation of the vehicle’s roadworthiness. Over the past four years, the MOT history demonstrates a stable maintenance profile, with no failures or repeated issues beyond the single advisory noted in 2025. The absence of recurring defects, combined with the absence of any critical failures, suggests that the vehicle has been maintained to a satisfactory standard, though the advisory on offside rear brake pad wear indicates a gradual but manageable degradation that should be monitored closely. The recorded mileage of 19,001 miles for a vehicle aged approximately ten years reflects a relatively low annual usage rate of around 1,900 miles per year, which is notably below the average for its class. Such low mileage often correlates with periods of inactivity, particularly if the vehicle has been stored or used sparingly, potentially leading to issues related to standing corrosion, fluid degradation, and wear from infrequent operation. Over time, prolonged idling can accelerate corrosion in brake components, particularly discs and calipers, which may explain the observed thinness of the offside rear brake pads. Additionally, standing fluids—such as brake fluid, differential oil, and coolant—can degrade more rapidly due to evaporation and oxidation, risking system inefficiency or failure if not addressed promptly. For the prospective buyer, the most critical inspection should focus on the brake system, particularly the rear offside components, where the thin brake pads indicate progressive wear. During a test drive, listen for uneven braking performance, a grinding noise when applying the brakes, or a binding sensation that could signal caliper issues or warped discs. Visually inspect the brake discs for scoring, glazing, or warping, and check for any rust or corrosion on the backing plates. Given the low mileage, also examine the vehicle for signs of standing corrosion, such as rust on the chassis near wheel arches, undercarriage, and beneath the rear axle housing, which can compromise structural integrity if left unaddressed. The rear child seat advisory from 2022 suggests the vehicle was fitted with a seat that obstructed inspection of the adult seat belt system, a minor but easily rectifiable issue if the seat remains in place. Beyond the immediate concerns, the buyer should conduct a comprehensive physical inspection of the vehicle’s fluids, paying particular attention to their condition and age. Given the extended periods of inactivity, check the brake fluid level and condition—old brake fluid can absorb moisture and reduce braking efficiency—and replace it if it appears dark or gel-like. Similarly, inspect the differential oil for contamination or sludge, and consider a full fluid flush if the vehicle has been stationary for an extended period. The 12V battery, which may have been discharged during prolonged inactivity, should be tested for voltage and overall health, as a weak battery can lead to starting issues or electrical system failures. Finally, verify the service history for any time-based maintenance, such as timing belt replacement (if applicable), suspension component checks, and exhaust emissions system servicing, as these tasks are critical for long-term reliability, especially on a vehicle of this age and usage profile.