TRIUMPH BONNEVILLE T 100 (865)

865cc Petrol Class 2

#1075 of 5426 overall #82 of 175 TRIUMPHs #205 of 465 cruiser bikes

89.6%

first-time pass rate

4.5%

failed outright

7,832

median miles at test

16.2k

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2008–2025

The BONNEVILLE T 100 (865)'s first-time pass rate has risen 4.5 points since 2008, 85.9% to 90.4%.

Pass rate by mileage

how the BONNEVILLE T 100 (865)'s first-time pass rate falls with the odometer · class average 84.9%

A low-mileage BONNEVILLE T 100 (865) passes first time 91.1% of the time; by 50k that's 88.7%.

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a BONNEVILLE T 100 (865)

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	406	36.2	0.5×
lamps and reflectors	179	15.9	0.5×
lighting and signalling	161	14.3	0.2×
tyres and wheels	110	9.8	0.3×
tyres	69	6.1	0.6×
fuel and exhaust	66	5.9	0.5×
structure and attachments	53	4.7	0.4×
steering and suspension	32	2.8	0.1×
reg plates and vin	26	2.3	0.2×
suspension	21	1.9	0.2×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the BONNEVILLE T 100 (865) beats 4 of its 4 closest rivals (TRIUMPH BONNEVILLE, TRIUMPH THUNDERBIRD, HARLEY-DAVIDSON XLH 883).

TRIUMPH BONNEVILLE 89.0% pass · 195k tests TRIUMPH THUNDERBIRD 87.8% pass · 56.3k tests HARLEY-DAVIDSON XLH 883 87.4% pass · 41.2k tests HARLEY-DAVIDSON XL 87.9% pass · 18.5k tests

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the BONNEVILLE T 100 (865).

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2013 (92.9% pass). Weakest: 2004 (85.4%).

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

TRIUMPH BONNEVILLE T 100 (865) FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH BONNEVILLE T 100 (865) reliable?

The TRIUMPH BONNEVILLE T 100 (865) is more reliable than average for its class: 89.6% of its 16,221 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1075 of 5426 models.

What does a BONNEVILLE T 100 (865) fail its MOT on most?

brakes — 36% of all defects recorded against failed BONNEVILLE T 100 (865) tests.

What is the best year of BONNEVILLE T 100 (865) to buy used?

By first-time pass rate, 2013-registered examples do best (92.9%) and 2004 worst (85.4%). Condition and history still trump the year.

How many miles will a BONNEVILLE T 100 (865) last?

The median BONNEVILLE T 100 (865) shows 7,832 miles at test, and examples around 50k miles still pass 88.7% of the time — mileage alone rarely kills one.