2021 Mercedes-Benz S-Class 4.0L Petrol · 5 SJG

The 2021 Mercedes-Benz S-Class presents a stable and exemplary maintenance trend, culminating in a clean pass on 12 January 2026 at 32,731 miles. The tester recorded zero defects, indicating the vehicle currently meets all required safety and emissions standards without any advisories. This unblemished record suggests the previous owner maintained the vehicle to a high standard, addressing potential issues proactively before they escalated into failures. The mileage accumulation aligns perfectly with typical usage for a vehicle of this age. Between the 2024 test at 21,812 miles and the 2025 test at 26,406 miles, the car covered 4,594 miles. The subsequent year saw a slight uptick in usage, with the odometer climbing 6,325 miles to reach the current 32,731 miles by January 2026. There are no anomalous gaps or sudden spikes in the recorded distances, reflecting consistent, low-mileage driving rather than prolonged periods of inactivity or excessive long-distance touring. Despite the flawless MOT history, a pre-purchase inspection must focus on the specific wear characteristics of a modern S-Class. The low annual mileage means the vehicle likely undertook frequent short trips, which can prevent the diesel particulate filter from regenerating fully or cause moisture buildup in the exhaust system, though the clean emissions test mitigates this concern. A buyer should physically inspect the air suspension components for slow leaks or compressor wear, as these systems degrade with age regardless of mileage. Check the alloy wheels for kerbing and the tyres for uneven wear, which often indicates misalignment or worn suspension bushes not yet severe enough to fail an MOT. The brake discs and pads should be measured for thickness; low-mileage vehicles often suffer from surface corrosion rather than friction wear, leading to binding calipers or juddering under heavy braking.