2017 Yamaha YS 125 0.1L Petrol · DV17 ABK

The most recent DVSA MOT test for this 2017 Yamaha YS 125 was conducted on 11 March 2026 and resulted in a pass with no defects or advisories recorded. The overall maintenance trend is stable and consistent, with the motorcycle clearing each test at the same approximate annual cadence. The pairings of a failed and passed test on the same day in both June 2025 and May 2024 are typical for small-capacity commuter machines where an initial failure is addressed immediately by the owner and a retest is carried out the same day, and because no defect categories were recorded against either failure, these retests were clearly straightforward to remedy. With a clean current pass and no advisory items noted across the recent history, there is no documented trend of recurring mechanical faults or progressive deterioration. At 20,045 miles over approximately nine years of service, this YS 125 has covered around 2,200 miles annually, which is exceptionally low for a commuter-class motorcycle of this age and suggests the machine has either been used only for occasional short journeys or has spent significant periods laid up in storage. Low annual mileage of this nature can be a mixed indicator: it reduces cumulative wear on the engine, transmission, and final drive, yet it introduces its own set of age-related concerns. Long standing periods encourage internal corrosion in the exhaust system and silencer, oxidation and pitting on the brake discs, and seizing of the caliper slides and pistons. Fuel systems can suffer from stale petrol, varnish build-up in the carburettor jets, and degradation of rubber fuel lines, while the drive chain and sprockets can corrode and develop tight links even when total mileage is modest. Given the clean MOT record and the low usage profile, a prospective buyer should focus physical inspection on items that deteriorate with calendar age rather than mileage. Examine the brake discs closely for surface rust and lip corrosion, and check that the calipers release cleanly without the pads binding against the disc, which is a common issue on bikes that have stood unused. Tyres should be inspected for sidewall perishing and cracking from age, even if the tread depth appears adequate, as the rubber compound hardens over time on low-mileage machines. The 12-volt battery is highly likely to be original or aged and should be load-tested, as standing and short infrequent journeys are the leading cause of premature battery failure. Also check the condition of the coolant, brake fluid, and any drive chain lubricant, as fluids degrade with time irrespective of mileage, and inspect the exhaust mounting rubbers and the carburettor for any signs of leaking seals or blocked pilot jets that may have developed during periods of inactivity. On a test ride, pay particular attention to smooth throttle response from a cold start, even idle at traffic pace, and the absence of flat spots or hesitation that might suggest fuel varnish or carburation issues. Listen for any clonks or rattles from the suspension, as the original front forks and rear shock have been fitted for the vehicle's entire nine-year life and the fork oil may have lost its viscosity, leading to reduced damping. Check that both front and rear brakes pull the machine up squarely without pulling to one side, which would indicate a binding caliper, and confirm that the chain runs smoothly without tight spots. Finally, verify that the odometer reading is consistent with the documented MOT history and service stamps, and consider commissioning an independent compression test and an oil analysis if the service history is incomplete, as these will provide a clear picture of internal engine condition given the low recorded mileage.