2001 Ducati S4 0.9L Petrol · Y365 CGN

The Ducati S4's 916cc engine typically falls into the UK CO2 emissions band that attracts a road tax of around £150‑£200 per year, though exact figures depend on the specific emissions rating. Insurance groups for vintage sport bikes of this size usually sit in the mid‑range (group 20‑25), leading to annual premiums of roughly £600‑£900 for a typical rider.

Fuel consumption for a 916cc Ducati is generally between 45‑55 mpg, which at current petrol prices translates to about £300‑£350 per year for an average of 3,000 miles driven. Routine maintenance on a Ducati of this age, including valve clearance checks, clutch adjustments, and periodic gearbox oil changes, can add another £200‑£300 annually. Combining tax, insurance, fuel, and maintenance gives an estimated annual running cost of £800‑£1,000.

Inspect the exhaust system closely, as the 2023 MOT noted a noisy exhaust (code 8.1.1 (a)). Look for cracks, rust, or missing mounts that could cause the noise and potentially affect emissions compliance. A test ride can help confirm whether the exhaust sound is within normal limits for a high‑performance bike.

Examine the engine casings and mounting points for any signs of oil seepage, which is not recorded in MOT results but can indicate internal wear. Pay particular attention to the cylinder heads, valve clearances, and the condition of the spark plugs, as these areas are prone to issues on older Ducati engines.

Check the chassis, suspension forks, and rear shock for any leaks, worn bushings, or excessive play. Given the bike's age, the suspension seals may be degraded, affecting handling. Also verify that the brakes (discs and pads) are in good condition, as MOTs do not detail pad thickness unless a failure occurs.