1985 Lambretta GP150 0.1L Petrol · B170 FTU

A persistent inconsistency in the rear braking system defines the recent mechanical history of this Lambretta, appearing as a recurring advisory for fluctuating brake effort in both the December 2024 and December 2025 tests. While the vehicle remains roadworthy and passed its latest inspection on 19 December 2025, the repetition of this specific fault suggests a systemic issue rather than a transient one. Aside from this, the record shows a period of electrical instability in June 2023, where a total failure of the headlamp, position lamps, and stop lamp led to a dangerous failure, though these were rectified immediately. The recorded mileage of 2,539 miles is exceptionally low for a vehicle of this vintage, equating to an average annual accumulation of approximately 62 miles over 41 years. Such a usage profile indicates a machine that has spent the vast majority of its life in stationary storage rather than in active service. While this preserves the physical condition of the drivetrain and reduces mechanical wear on the engine, it often necessitates a closer inspection of rubber components and seals that may have perished or hardened due to prolonged inactivity. During a physical inspection and test drive, priority must be given to the rear braking system to determine the nature of the recorded fluctuation. The buyer should feel for any pulsing, uneven resistance, or a lack of linear deceleration when applying the rear brake control. Particular attention should be paid to the brake linkage and the condition of the drum internals to ensure there is no glazing or uneven wear contributing to the inconsistent effort flagged by the DVSA. Given the comprehensive electrical failure recorded in 2023, a full functional check of the lighting circuit is essential. Verify that the headlamp operates correctly on both dipped and main beams and ensure the stop lamp activates reliably from both brake controls. Any flickering or intermittent operation of the position lamps would indicate that the previous electrical issues may not have been fully resolved or that further degradation of the wiring loom is occurring.