2021 Triumph Rocket 3 GT Triple Black 2.5L Petrol · SV71 OPE

The Triumph Rocket 3 GT Triple Black is a 2.5 L petrol motorcycle with a typical fuel consumption of around 45‑50 mpg, translating to roughly £600‑£700 per year on fuel assuming average UK mileage. Road tax for a 2458 cc bike falls into the highest band, currently about £300 per year. Insurance groups for this model are usually in the 30‑35 range, leading to an annual premium of approximately £800‑£1,200 depending on the rider's profile. Routine maintenance, including valve checks and coolant changes, can add another £200‑£300 per year.

Overall, you can expect total annual running costs in the region of £1,900‑£2,500, with fuel and insurance forming the bulk of the expense. The low mileage may slightly reduce wear‑related costs, but budgeting for the higher tax and insurance is essential.

Focus first on the headlamp alignment and condition, as the MOT failure in 2024 highlighted an aim that was too high. Verify that the bulbs are correctly positioned and that the reflector housings are undamaged. Next, examine the engine for any oil leaks, especially around the triple cylinder heads, and check the coolant level and hoses for signs of cracking or swelling.

Inspect the chassis for any signs of impact or corrosion, paying particular attention to the rear swingarm and suspension components. The bike's low mileage suggests limited use, so look for dried‑out rubber seals on the fuel tank and brake lines, which can become brittle over time even with few miles. Finally, review the condition of the exhaust system and the spark plugs, as these are critical on a high‑performance triple engine.