2018 Yamaha YS 125 0.1L Petrol · YN18 JBX

A clean and entirely defect-free DVSA record across every recorded test, including the most recent pass on 26 February 2026, establishes this YS 125 as a machine with no flagged advisories, structural concerns, or component failures documented since it first appeared for testing in 2023. The only anomaly worth noting is the duplicate entry on 6 February 2024, where a fail and a pass are both recorded on the same date; this pattern is consistent with a vehicle initially presented with an issue that was rectified and re-submitted within the same day, and the absence of any defect codes on either entry means no specific mechanical problem has been officially attributed to the machine. Across all five recorded events spanning three years, no brake, tyre, suspension, exhaust, lighting, or structural defects have been raised, indicating a stable and consistent roadworthiness profile with no deteriorating trend visible in the data. With 26,679 miles accumulated over an eight-year lifespan, the annual usage works out to roughly 3,335 miles per year, which is notably low for a commuter-class 125 and points towards a vehicle that has seen light, predominantly short-journey use rather than sustained daily riding. Low-mileage motorcycles of this age are commonly found to have suffered from extended periods of standing, which can quietly degrade consumables such as the 12V battery, carburettor or fuel system internals, drive chain and sprockets, brake pads and discs, and tyre rubber compounds through oxidation and flex-cracking rather than through wear from use. The recorded mileage appears entirely plausible and incremental across the test entries, with no sudden jumps or signs of a mileage discrepancy that would warrant concern about the odometer's integrity. For a prospective buyer, the absence of recorded advisories means there are no specific components flagged for immediate scrutiny, but the low annual mileage strongly warrants a hands-on inspection of items that the MOT does not cover or that deteriorate with age regardless of use. On a test ride, pay particular attention to the operation of the carburettor and throttle response, as stale fuel deposits can cause hesitation, poor cold starting, or an uneven idle. Listen for any chain or sprocket noise under deceleration, check the sprocket teeth for the hooked or shark-fin shape that indicates replacement is overdue, and inspect the chain for stiff links and adequate slack. Examine the front and rear brake discs for surface rust pitting or lipping, the brake pads for crumbling edges, and the tyres for sidewall cracking or uneven wear, all of which are common on lightly used machines where rubber and friction materials have aged rather than worn. Finally, because this is a 2018 model now in its eighth year, components with a finite lifespan such as the battery, fork seals, and any rubber hosing or gaiters should be assessed visually for signs of perishing, seepage, or corrosion around electrical connections. Check that the steering head bearings are not notched by pushing the front wheel off the ground and rocking it side to side, and confirm that the rear shock and swingarm pivot bushes feel tight without any play or clonking over uneven surfaces. A compression check or at least a careful listen during kick-start or electric-start operation can reveal valve or piston ring wear that the MOT visual test will not detect. While the official DVSA history is commendably clean, a pre-purchase inspection by a motorcycle specialist remains the prudent step for any eight-year-old, low-mileage machine of this type.