2020 Mercedes-Benz GLS 400 AMG LN Prem + D 4MAT A 2.9L Diesel · HN20 NLL

The most recent MOT test conducted on 16 July 2025 resulted in a pass with no defects recorded. Reviewing the vehicle history, the maintenance trend appears exceptionally stable, with clean passes in 2024 and 2023. While a failure was noted on 21 June 2023, the immediate pass the following day suggests a minor administrative or easily rectified issue rather than a systemic mechanical failure. This consistency indicates a vehicle that has been maintained to a high standard in accordance with DVSA requirements. The recorded mileage of 53,773 miles over approximately six years equates to an average annual usage of roughly 8,962 miles. This is considered typical for a luxury SUV of this class and suggests a balanced usage profile. There are no indications of excessive wear associated with high-mileage fleet use, nor are there signs of the deterioration often found in vehicles that have suffered from prolonged periods of standing. The drivetrain and chassis components should theoretically be in a mid-life state of wear. Given the absence of MOT advisories, the physical inspection should focus on age-related degradation and preventative maintenance. It is essential to examine the tyre sidewalls for signs of perishing or ozone cracking, as rubber compounds degrade over time regardless of remaining tread depth. Particular attention should be paid to the brake discs for surface corrosion and the calipers for any signs of binding, which can occur even with regular use on heavier vehicles. The health of the 12V battery should be verified, as the complex electronic suites in this model are highly sensitive to voltage drops. Prospective buyers should verify the service history to ensure that calendar-based fluid intervals have been adhered to, specifically regarding engine oil, coolant, and brake fluid, which degrade over time. During a test drive, listen for any unusual noises from the air suspension system during leveling or cornering, and check for any shuddering under heavy braking. Finally, a thorough review of the digital service record is advised to confirm that all manufacturer-recommended inspections have been completed, ensuring the long-term structural and mechanical integrity of the 4MAT drivetrain.