2004 Yamaha FZ6 0.6L Petrol · PA04 AOH

The most recent MOT test conducted on the 2004 Yamaha FZ6 on 2026-08-26 resulted in a passing outcome, but this follows a critical failure in the same test session under the same conditions, specifically a dangerous condition relating to the near-side drive chain being excessively loose and likely to fail imminently. This dual-test failure indicates a severe and persistent issue that has not been addressed, suggesting either a lack of proper maintenance or a fundamental mechanical failure that has not been rectified. The previous MOT records show no defects until 2025, with the advisory on rear tyre wear appearing only once, reinforcing the concern that the drive chain problem may have been overlooked or ignored during earlier inspections. The overall maintenance trend is unstable, with a clear pattern of deferred or unresolved mechanical issues that could compromise road safety if not addressed promptly. The vehicle’s recorded mileage of 36,431 miles at the time of writing represents an unusually low annual usage rate of approximately 1,656 miles per year, which is far below what would be expected for a 22-year-old motorcycle of this type. Such low mileage often correlates with periods of prolonged inactivity, where components such as the drive chain, bearings, and seals can degrade more rapidly due to lack of lubrication and movement. The absence of significant mileage accumulation over the past decade suggests that the motorcycle has been stored or used sporadically, which can accelerate wear on consumables like brake pads, tyres, and suspension components. However, the critical drive chain failure highlights that even low-mileage vehicles can suffer from mechanical failures if not regularly serviced, particularly in areas prone to neglect such as drivetrain components. For the prospective buyer, the most urgent concern is the near-side drive chain failure, which constitutes a dangerous condition under the DVSA’s MOT testing criteria. The chain is loose to the point of imminent failure, meaning it may snap without warning, leading to a loss of control and potentially catastrophic consequences. Before proceeding with purchase, the buyer should immediately inspect the drive chain for signs of elongation, excessive slack, or wear on the sprockets. During a test drive, listen for a distinct rattling or clunking noise from the rear wheel area, particularly when accelerating or shifting gears, as this may indicate chain movement or binding. If the chain is confirmed to be loose, the buyer should insist on a full replacement by a qualified motorcycle technician, as the cost of a new chain and associated components is typically less than £300, but the risk of a catastrophic failure far outweighs any potential savings. Additionally, the rear tyre advisory from 2025 suggests that the rear tyre may be nearing the legal limit of 1.6mm tread depth, which should be verified with a tread depth gauge. Uneven wear patterns or cracks in the sidewall could also indicate underlying issues with alignment or suspension. Beyond the immediate drive chain concern, the buyer should conduct a comprehensive physical inspection of the motorcycle to address potential issues arising from its age and low annual mileage. Given the vehicle’s age, the tyres should be checked for sidewall cracking or perishing, which can occur even with low mileage due to prolonged exposure to the elements. The brake system should be inspected for signs of corrosion on brake discs or calipers, particularly if the motorcycle has been stored in a damp environment, as standing water can cause rust and binding. The 12V battery should be tested for charge retention and overall health, as older batteries in low-use vehicles often fail due to sulfation or poor connections. Fluid levels, including the coolant, brake fluid, and engine oil, should be checked and topped up if necessary, with a reminder that fluids degrade over time even without use. Finally, the suspension components, such as coil springs and shock absorbers, should be examined for signs of wear or damage, as prolonged inactivity can lead to stiffness or failure. If the motorcycle has been stored for extended periods, it may also be advisable to perform a thorough cleaning of the exhaust system to prevent corrosion, as rust can accumulate rapidly in a stationary vehicle.