2021 Mercedes-Benz GLB 200 AMG Line Premium + A 1.3L Petrol · MW70 DVT

A pattern of deterioration linked to low usage defines this vehicle's mechanical record, with the most recent pass on 24 October 2025 highlighting widespread degradation of consumables. While the vehicle has maintained a passing status, the transition from a single CV boot issue in March 2024 to multiple advisories regarding brake disc pitting and tyre perishing indicates a trend of wear caused by inactivity rather than operational mileage. With only 11,769 miles recorded over approximately five years, the vehicle has averaged roughly 2,354 miles per year. This exceptionally low annual accumulation often leads to specific mechanical issues, such as the surface corrosion and pitting noted on the brake discs, as the components are not used frequently enough to keep the surfaces clean. This usage profile also correlates with the tyre perishing observed in the latest test, where rubber compounds degrade over time regardless of the remaining tread depth. Attention must be paid to the braking system and tyre condition during a physical inspection. The DVSA records specifically flag worn and pitted discs both front and rear, which can lead to reduced braking efficiency. During a test drive, feel for any pedal judder or unevenness during deceleration, which would confirm the extent of the disc scoring. The recorded cracking and perishing on the offside front and nearside rear tyres require a close examination of the sidewalls to ensure structural integrity. The previous recording of a severely deteriorated nearside front drive shaft constant velocity boot should be verified to ensure the component was replaced. Listen for rhythmic clicking or popping sounds when steering at full lock and accelerating, as this is a primary symptom of a failed joint. Additionally, the mention of an under tray being fitted should be checked to ensure it is securely fastened and not obstructing airflow or dragging, which may manifest as a scraping sound or vibration over uneven road surfaces.