1985 Yamaha YB100 0.1L Petrol · C128 BFB

The vehicle’s most recent MOT test on 2022-10-10 confirms it remains roadworthy, with no defects recorded at 11,821 miles. The absence of advisories or failures across the last three tests—including the 2021-04-19 and 2010-03-06 assessments—suggests a stable maintenance pattern, though the prolonged gaps between tests (particularly the five-year hiatus from 2010 to 2021) raise questions about whether critical components were serviced outside MOT requirements. The 2022 pass, just three months before the current date, indicates the vehicle has not yet reached its next mandatory inspection, but the lack of recent service history beyond MOT compliance means potential wear on non-MOT-tested elements cannot be confirmed. The recorded mileage of 11,821 miles over 41 years—approximately 288 miles annually—is exceptionally low for a vehicle of this age, suggesting either minimal use or prolonged periods of storage. The near-static mileage between tests (only 27 miles between 2021 and 2022) implies the vehicle was likely stationary for extended periods, which could accelerate degradation of fluids, seals, and rubber components. Without additional service records, it is impossible to determine whether critical fluids (e.g., brake fluid, coolant, or chain lubricant) were refreshed during these gaps, or whether the engine, transmission, or electrical systems were operated regularly to prevent stagnation. Given the sparse MOT history, a buyer should prioritise an in-person inspection focusing on high-wear consumables and structural integrity. The absence of advisories does not preclude issues with the chain, sprocket, or rear suspension—common failure points on this model—particularly if the vehicle was stored without proper maintenance. The brakes, while not flagged in tests, should be scrutinised for uneven wear or corrosion, especially if the vehicle was left stationary for years. Rust penetration in the frame, fork seals, or exhaust system is also a concern given the age, and any visible corrosion in these areas would warrant immediate attention. The engine and transmission should be checked for leaks or unusual noises, as prolonged inactivity can lead to dryness in bearings or seals. Finally, the electrical system—including lights, switches, and battery condition—should be tested, as age-related degradation is often overlooked in low-mileage vehicles.