What year Triumph Bonneville T 100 865 is most reliable?

Based on MOT first-test pass rates, the 2013 Triumph Bonneville T 100 865 has the highest pass rate at 94.1%, out of 114 vehicles tested.

What are the most common Triumph Bonneville T 100 865 MOT failures?

The most common Triumph Bonneville T 100 865 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 T 100 865 — Reliability by Year

1,836 vehicles · MOT data 2005–2013 · first-test pass rates

This page shows MOT first-test pass rates for each year the Triumph Bonneville T 100 865 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

2013

94.1% pass rate · 114 vehicles

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Lowest pass rate year

2005

90.1% pass rate · 247 vehicles

Year	Pass rate	Avg mileage	Vehicles
2013	94.1%	8,011 mi	114
2012	91.9%	6,907 mi	190
2011	90.6%	6,819 mi	205
2010	91.2%	7,740 mi	189
2009	91.9%	6,629 mi	205
2008	92.6%	7,472 mi	216
2007	92.5%	8,323 mi	214
2006	91.3%	8,584 mi	256
2005	90.1%	10,004 mi	247

Which year Triumph Bonneville T 100 865 is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests. Green = noticeably above average for this model; red = noticeably below average.

Tests range from an average of 6,629 miles (newest year) to 10,004 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a Triumph Bonneville T 100 865.

See the buying guide →

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Check any UK registration — free MOT history and risk insights.