2004 Yamaha YZF R1 04 1.0L Petrol · FD04 YXA

A pattern of recurring suspension component wear and intermittent electrical/lighting issues defines the mechanical history of this vehicle, despite a clean result in its most recent test on 21 May 2026. While the latest inspection passed with no defects after rectifying a missing rear reflector and a non-functional nearside rear indicator, the preceding years show a tendency for consumables and linkages to reach critical thresholds. Specifically, the 2020 inspection recorded a dangerous failure due to insufficient rear tyre tread depth and a major failure regarding a loose drive chain, alongside advisories for both tyre wear and suspension bushing. The recorded mileage of 23,103 miles over a 22-year lifespan represents an average annual accumulation of approximately 1,050 miles. This low-frequency usage profile suggests the vehicle has spent significant periods stationary between intervals of use. Mechanically, such a pattern can lead to the degradation of rubber components and seals through age rather than friction, which is consistent with the advisories regarding worn suspension pins and bushes noted in 2019 and 2020. The six-year gap in testing between 2020 and 2026 also indicates a period of non-use or irregular road use that warrants close scrutiny of all moving parts. Prospective buyers should focus heavily on the rear suspension assembly, as the MOT history repeatedly flags wear in the central rear lower suspension pin, bush, or joint. During a test ride, pay close attention to the stability of the rear end when encountering uneven road surfaces or during cornering; any lateral movement, clunking, or irregular oscillations could indicate that the previously noted bushing wear has progressed or has not been adequately addressed. Furthermore, the 2020 failure regarding an excessively loose drive chain necessitates a thorough physical inspection of the chain and sprocket condition to ensure there is no excessive play or uneven wear patterns that could compromise power delivery. The history of tyre wear advisories and a dangerous tread depth failure suggests that tyre replacement intervals may be driven by age or storage conditions rather than high mileage. It is essential to inspect the current tyre carcasses for signs of perishing, sidewall cracking, or flat-spotting caused by long periods of standing. Additionally, given the 2026 failure involving the nearside rear indicator and the 2020 failure of the offside front headlamp, a complete functional check of the entire lighting and electrical system is required to ensure all bulbs, filaments, and wiring connections are secure and operational.