TRIUMPH T100SS

500cc Petrol Class 2

#454 of 5426 overall #29 of 175 TRIUMPHs #281 of 2787 other bikes

92.1%

first-time pass rate

2.0%

failed outright

12,729

median miles at test

692

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2017

The T100SS's first-time pass rate has risen 1.9 points since 2006, 92.7% to 94.6%.

Pass rate by mileage

how the T100SS's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage T100SS passes first time 88.7% of the time; by 40k that's 87.1%.

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 T100SS

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	20	44.4	0.3×
steering and suspension	12	26.7	0.3×
tyres and wheels	4	8.9	0.3×
brakes	4	8.9	0.1×
driving controls	3	6.7	1.8×
fuel and exhaust	1	2.2	0.2×
drive system	1	2.2	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 T100SS 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 T100SS.

Pass rate by registration year

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

Best year to buy used: 1962 (96.4% pass). Weakest: 1967 (82.1%).

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 T100SS FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH T100SS reliable?

The TRIUMPH T100SS is more reliable than average for its class: 92.1% of its 692 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #454 of 5426 models.

What does a T100SS fail its MOT on most?

lighting and signalling — 44% of all defects recorded against failed T100SS tests.

What is the best year of T100SS to buy used?

By first-time pass rate, 1962-registered examples do best (96.4%) and 1967 worst (82.1%). Condition and history still trump the year.

How many miles will a T100SS last?

The median T100SS shows 12,729 miles at test, and examples around 40k miles still pass 87.1% of the time — mileage alone rarely kills one.