TRIUMPH T100

500cc Petrol Class 2

#1332 of 5426 overall #95 of 175 TRIUMPHs #816 of 2787 other bikes

88.8%

first-time pass rate

4.2%

failed outright

8,892

median miles at test

5,424

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The T100's first-time pass rate has risen 3.1 points since 2005, 87.7% to 90.8%.

Pass rate by mileage

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

A low-mileage T100 passes first time 90.0% of the time; by 50k that's 89.2%.

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 T100

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	131	28	0.4×
steering and suspension	122	26.1	0.6×
brakes	83	17.7	0.3×
tyres and wheels	50	10.7	0.4×
fuel and exhaust	23	4.9	0.5×
lamps and reflectors	21	4.5	0.1×
drive system	14	3	0.3×
driving controls	10	2.1	0.8×
body and structure	9	1.9	0.3×
structure and attachments	5	1.1	0.1×

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 T100 beats 4 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

KAWASAKI ZX-6R 78.1% pass · 174k tests SUZUKI GSF600 77.3% pass · 143k tests YAMAHA FZS600 82.6% pass · 137k tests SUZUKI SV650S 80.6% pass · 84.6k 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 T100.

Pass rate by registration year

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

Best year to buy used: 1955 (94.0% pass). Weakest: 2003 (78.1%).

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 T100 FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH T100 reliable?

The TRIUMPH T100 is more reliable than average for its class: 88.8% of its 5,424 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1332 of 5426 models.

What does a T100 fail its MOT on most?

lighting and signalling — 28% of all defects recorded against failed T100 tests.

What is the best year of T100 to buy used?

By first-time pass rate, 1955-registered examples do best (94.0%) and 2003 worst (78.1%). Condition and history still trump the year.

How many miles will a T100 last?

The median T100 shows 8,892 miles at test, and examples around 50k miles still pass 89.2% of the time — mileage alone rarely kills one.