2021 Mercedes-Benz GLS 400 AMG LN Prem + D 4MAT A 2.9L Diesel · 7 KSJ

The vehicle’s most recent MOT test on 30 May 2026—just two months ago—confirmed full roadworthiness with no defects recorded, indicating a clean pass at 32,894 miles. While the absence of advisories or failures in the latest inspection suggests no immediate mechanical concerns, the 2024 test revealed persistent tyre-related issues that were not fully resolved by the 2025 test. The 2024 entry specifically noted worn front tyres approaching the legal limit and uneven wear, alongside the activation of the tyre pressure monitoring system, which implies either neglect or a lack of proactive maintenance. This pattern suggests that while the vehicle has not failed structurally, basic upkeep—particularly tyre rotation, balancing, or alignment—was either overlooked or deferred between tests. The recorded mileage of 32,894 miles over five years equates to an average of approximately 6,579 miles annually, which aligns with typical usage for a vehicle of this age. There are no significant gaps in mileage between tests, and the progression from 14,444 miles in May 2024 to 24,723 miles in May 2025, followed by 32,894 miles in May 2026, indicates consistent driving rather than prolonged periods of inactivity. However, the lack of intermediate maintenance records—such as service intervals or part replacements—means no external verification exists for critical components like suspension bushes, coil springs, or brake caliper wear, which are prone to gradual deterioration at this mileage. Given the history, a buyer should prioritise an independent inspection of the front suspension components, particularly the alignment and condition of the coil springs and bushes, as uneven tyre wear often signals misalignment or worn suspension parts. The brakes, while not explicitly failed, warrant scrutiny for binding calipers or uneven disc wear, especially if the vehicle exhibits pulling or reduced stopping efficiency. Additionally, the under-tray installation noted in 2024 may obscure access to the subframe or exhaust system, so corrosion or leaks in these areas should be checked thoroughly. The absence of advisories in the latest test does not preclude hidden issues, so a focus on fluid levels, differential and transfer case conditions (given the 4MAT configuration), and exhaust emissions would provide further clarity on the vehicle’s long-term reliability.