BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

TRIUMPH T100C

500cc Petrol Class 2
92.5%
first-time pass rate
2.4%
failed outright
8,756
median miles at test
491
MOT tests, 2005–2025

Pass rate over time

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

The T100C's first-time pass rate has risen 1.8 points since 2006, 94.3% to 96.1%.

85%92%100%2006: 94.3% pass (35 tests)2007: 90.6% pass (32 tests)2008: 87.8% pass (41 tests)2009: 91.2% pass (34 tests)2010: 94.3% pass (35 tests)2011: 88.6% pass (35 tests)2012: 91.9% pass (37 tests)2013: 92.5% pass (40 tests)2014: 100.0% pass (43 tests)2015: 95.6% pass (45 tests)2016: 92.5% pass (40 tests)2017: 96.1% pass (51 tests)20062017

Pass rate by mileage

how the T100C's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage T100C passes first time 91.4% of the time; by 20k that's 87.9%.

87%90%94%0k: 91.4% pass (255 tests)10k: 92.7% pass (137 tests)20k: 87.9% pass (33 tests)0k10k20k

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 T100C

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
steering and suspension
9 34.6
lighting and signalling
7 26.9
brakes
3 11.5
lamps and reflectors
2 7.7
audible warning (Horn)
1 3.8
suspension
1 3.8
driving controls
1 3.8
fuel and exhaust
1 3.8
structure and attachments
1 3.8

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the T100C beats 4 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

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 T100C.

Pass rate by registration year

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

Best year to buy used: 1968 (95.7% pass). Weakest: 1971 (87.5%).

86%92%97%1968: 95.7% pass (70 tests)1969: 90.0% pass (100 tests)1970: 93.8% pass (113 tests)1971: 87.5% pass (104 tests)196819701971

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.