2005 Ducati S4 R 1.0L Petrol · FX05 HNN

The vehicle is currently roadworthy but the maintenance history shows a persistent trend of unresolved mechanical issues. While the most recent test in September 2025 at 34,754 miles passed, the tester again flagged a fluctuation in front brake effort and a noisy exhaust. The brake fluctuation has appeared consistently in every test since 2023, indicating a recurring fault with the hydraulic system, master cylinder, or potentially corroated rotors that has not been rectified by previous owners. The mileage profile is exceptionally low for a 21-year-old motorcycle, averaging approximately 1,655 miles per year. The data shows periods of infrequent use, such as the 1,539 miles driven between October 2022 and September 2023. However, low-mileage often leads to degradation of rubber-based components. This is evidenced by the failure in September 2024 at 33,386 miles, where the rear tyre was dangerously worn with a tread depth of 1.0mm, suggesting that basic consumable upkeep was neglected during long stationary periods. A buyer must conduct a thorough physical inspection of the braking system to identify the root cause of the fluctuating effort. The recurring nature of this fault suggests air in the lines, a failing ABS pump, or sticking pistons in the calipers. The noisy exhaust noted in the 2025 test requires checking for internal baffle damage or manifold leaks which often occur on older Duc. Given the age and low mileage, the inspection should also focus on perished brake hoses, dry seals, and seized suspension sliders, as these components fail due to time rather than distance-based wear.