2021 Mercedes-Benz GLB 220 AMG Line Prem + D 4M A 1.9L Diesel · S88 NAA

The most recent MOT test conducted in April 2026 resulted in a pass, but this follows a significant failure involving both a major and a dangerous defect. While the vehicle maintained a clean record through 2024 and 2025, the recent failure indicates a sudden lapse in the maintenance of critical safety components. The overall maintenance trend should be viewed with caution; although the vehicle is currently compliant, the severity of the defects found, specifically a tyre with exposed cords, suggests that the previous owner may not have been performing sufficiently frequent visual inspections of wear items. With a recorded mileage of 47,878 miles over approximately five years, the vehicle has covered an average of roughly 9,576 miles per year. This represents typical, moderate usage for a diesel-powered SUV and avoids the extremes of either heavy commercial mileage or the potential issues associated with very low-use vehicles, such as excessive carbon buildup or seized components from standing. This mileage level suggests that the vehicle's mechanical components, including the drivetrain and suspension, should be in a mid-life condition, though consumables like tyres, brake pads, and suspension bushes will be subject to regular, predictable wear. During your test drive, you must be particularly vigilant regarding the front suspension system. The recent failure of the nearside front anti-roll bar linkage ball joint due to excessive wear means you should listen closely for any knocking, clunking, or rattling noises when traversing uneven road surfaces or speed bumps. While the part was replaced to achieve the pass, you should also check for any secondary symptoms of wear, such as uneven tyre wear or a slight pull to one side, which could indicate broader suspension geometry issues. Additionally, given the dangerous failure of the offside rear tyre, inspect all remaining tyres for consistent tread depth and ensure there are no signs of sidewall perishing, bulging, or uneven wear patterns. Finally, perform a thorough check of the braking system and fluid health. Inspect the brake discs for significant corrosion or scoring and test the vehicle under braking to ensure there is no shuddering or pulling, which could indicate warped discs or binding calipers. Given the vehicle's age, you should also verify the service history to ensure that oil changes and filter replacements have been carried out according to the manufacturer's schedule. It is also prudent to check the condition of the 12V battery and ensure that all essential fluids, including coolant and brake fluid, are at the correct levels and have not suffered from age-related degradation.