What year Triumph Bonneville Speedmaster is most reliable?

Based on MOT first-test pass rates, the 2021 Triumph Bonneville Speedmaster has the highest pass rate at 95.7%, out of 265 vehicles tested.

What are the most common Triumph Bonneville Speedmaster MOT failures?

The most common Triumph Bonneville Speedmaster MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Triumph Bonneville Speedmaster — Reliability by Year

1,234 vehicles · MOT data 2021–2025 · first-test pass rates

This page shows MOT first-test pass rates for each year the Triumph Bonneville Speedmaster was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

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Best pass rate year

2021

95.7% pass rate · 265 vehicles

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Lowest pass rate year

2022

95.1% pass rate · 263 vehicles

Year	Pass rate	Avg mileage	Vehicles
2025	First MOTs due 2028+	—	185
2024	First MOTs due 2027+	—	218
2023	First MOTs due 2026+	2,050 mi	303
2022	95.1%	3,859 mi	263
2021	95.7%	3,811 mi	265

* UK vehicles require their first MOT at 3 years old. Recent model years shown in grey have little or no MOT test data yet — pass rate data will build up as those vehicles mature.

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