2000 Yamaha YN100 0.1L Petrol · W969 SOU

The latest recorded MOT test from May 2013 resulted in a failure, including multiple dangerous defects. When reviewing the history from 2009 to 2013, the maintenance trend appears to be worsening. While the vehicle initially passed with few issues, the final recorded tests show a significant decline in roadworthiness, specifically regarding critical safety systems. The transition from minor advisories to dangerous failures in the steering and braking systems suggests a period of neglect or a failure to perform routine preventative maintenance. The recorded mileage of 16,861 miles over approximately 26 years indicates an exceptionally low annual usage rate of roughly 648 miles. While this implies minimal wear on the internal engine components and drivetrain, such low mileage often points to extended periods of standing. Inactive vehicles are prone to specific degradation patterns, where rubber components perish and fluids break down due to age rather than use, often resulting in mechanical issues that are more severe than those found on a higher-mileage vehicle that has been kept in regular service. Prospective buyers must pay close attention to the steering and braking systems given the history of dangerous failures. The steering headbearing should be checked for excessive play or notchiness, which indicates pitting or wear. The brake linkage and rear brake lever must be inspected for correct travel and smooth operation, as previous records indicate maladjustment and inadequate reserve travel. During a test drive, listen for clunks or knocks from the rear suspension bushes and feel for any shuddering or inconsistency in braking effort, which would suggest the previous issues with brake fluctuation have persisted. Due to the vehicle's age and low usage, a comprehensive physical inspection of all consumables is essential. Check the tyre sidewalls for cracking and perishing, as old rubber loses its grip and structural integrity regardless of the remaining tread. Inspect the brake discs for heavy surface corrosion and ensure the calipers are not binding. The 12V battery and fuel system should be scrutinized for failure or varnish buildup from standing. Finally, verify the service history to ensure that engine oil and brake fluid have been changed according to calendar intervals, as these fluids degrade chemically over time regardless of the miles covered.