1999 Honda NX650 0.6L Petrol · T186 AOB

The most recent MOT, carried out on 23 July 2025, was a Pass with no defects recorded, indicating that the bike met the statutory safety and emissions standards at that date. Looking back through the four‑year history the pattern shows a dip in 2023 when a failure was recorded for rear lower suspension wear and steering interference on full lock, followed by an advisory on rear suspension wear in 2022 and clean passes in 2021 and 2024. The fact that the 2024 and 2025 tests were clean suggests that any faults identified in 2023 were addressed, and the overall maintenance trend appears to be improving rather than deteriorating. Mileage information is not supplied, so a quantitative assessment of annual usage cannot be made. For a 1999 Honda NX650 a typical rider would accumulate roughly 2 000–3 000 miles per year, giving an expected odometer reading of about 45 000–70 000 miles by 2026. In the absence of a recorded figure the buyer should request a current odometer reading, compare it with service stamps or receipts, and look for any signs of excessive wear such as heavily thinned brake discs or tyre tread that would be out of proportion to the apparent mileage. The recurring rear lower suspension advisory warrants a close visual and tactile inspection of the lower swing‑arm bushings, pivot bolts and any associated bearings. On a test ride the rider should listen for clunking or knocking when riding over bumps, and feel for any looseness or excessive play in the rear end. Uneven tyre wear on the rear tyre can be a symptom of worn bushings, and the rear suspension should be checked for any oil leakage from the shock absorber. The steering interference noted in 2023 should be verified by turning the handlebars to full lock in both directions; the steering should move freely without the fuel tank or bodywork contacting the fork or any other component. Any binding, grinding noise or a noticeable increase in steering effort could indicate a misaligned steering rack, worn steering bearings, or a compromised fuel tank mount that may need rectification. Given the bike’s age, even with a clean recent MOT, the buyer should also examine age‑related items that are not covered by the MOT. Inspect the tyre sidewalls for cracking, dry rot or hardening of the rubber, especially if the bike has been stored for long periods. Check the 12 V battery for sulphation, low voltage and swollen cases, and consider a load test. Examine the brake discs and pads for surface corrosion, pitting or uneven wear, and verify that the calipers move freely without sticking. Look for any signs of fluid degradation – old engine oil, coolant or brake fluid may have become contaminated and should be replaced on a time basis. Finally, inspect the exhaust for rust or cracks, the frame for any corrosion or fatigue, and ensure that the service book shows regular oil changes and valve adjustments, as these are critical to the long‑term reliability of a late‑1990s four‑stroke motorcycle.