2020 Mercedes-Benz GLS 400 AMG LN Prem+exe D 4M A 2.9L Diesel · SM20 REM

The 2020 Mercedes-Benz GLS 400 demonstrates a completely stable and exemplary maintenance trend, culminating in a flawless pass at its most recent MOT on 20 March 2026 at 47,154 miles. The tester recorded zero defects, indicating that all critical safety and emissions systems met the required standard without any advisories. This unblemished record suggests a vehicle that has been consistently maintained to a high standard, with no recurring mechanical or structural issues developing over its lifespan. The mileage accumulation aligns perfectly with typical usage for a vehicle of this age, averaging roughly 7,859 miles per year. The progression from 19,358 miles in February 2023 to 26,683 miles in February 2024 shows an annual increase of 7,325 miles, while the jump to 31,426 miles by February 2025 reflects 4,743 miles covered that year. The most recent interval, from February 2025 to March 2026, saw a slightly higher accumulation of 15,728 miles over thirteen months, suggesting a period of more sustained or regular use. There are no suspicious gaps or sudden drops in the odometer reading, confirming steady, continuous operation rather than prolonged periods of inactivity. Although the MOT history contains zero defects or advisories, a physical pre-purchase inspection remains essential for a vehicle of this size and specification. A buyer should examine the condition of the air suspension components, as failure in these systems is common on large SUVs and can lead to costly repairs. The brake discs and pads should be measured for wear, given the vehicle's substantial kerb weight, while the tyre sidewalls require close scrutiny for bulges or uneven wear patterns. A thorough underbody check is also advisable to confirm the structural integrity of the chassis and subframes, ensuring no corrosion has developed beneath the underseal despite the clean MOT record.