TRIUMPH BONNEVILLE T100

790cc Petrol Class 2

#1303 of 5426 overall #93 of 175 TRIUMPHs #254 of 465 cruiser bikes

88.9%

first-time pass rate

5.1%

failed outright

8,632

median miles at test

4,711

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2025

The BONNEVILLE T100's first-time pass rate has risen 3.7 points since 2006, 89.6% to 93.3%.

Pass rate by mileage

how the BONNEVILLE T100's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage BONNEVILLE T100 passes first time 90.8% of the time; by 40k that's 76.6%.

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 T100

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	153	39.4	0.6×
tyres and wheels	54	13.9	0.5×
lighting and signalling	52	13.4	0.2×
lamps and reflectors	40	10.3	0.3×
steering and suspension	23	5.9	0.1×
fuel and exhaust	21	5.4	0.5×
structure and attachments	14	3.6	0.3×
tyres	14	3.6	0.4×
Identification of the vehicle	9	2.3	0.8×
suspension	8	2.1	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 T100 beats 3 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 T100.

Pass rate by registration year

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

Best year to buy used: 2022 (94.0% pass). Weakest: 2006 (79.7%).

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 T100 FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH BONNEVILLE T100 reliable?

The TRIUMPH BONNEVILLE T100 is more reliable than average for its class: 88.9% of its 4,711 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1303 of 5426 models.

What does a BONNEVILLE T100 fail its MOT on most?

brakes — 39% of all defects recorded against failed BONNEVILLE T100 tests.

What is the best year of BONNEVILLE T100 to buy used?

By first-time pass rate, 2022-registered examples do best (94.0%) and 2006 worst (79.7%). Condition and history still trump the year.

How many miles will a BONNEVILLE T100 last?

The median BONNEVILLE T100 shows 8,632 miles at test, and examples around 40k miles still pass 76.6% of the time — mileage alone rarely kills one.