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

TRIUMPH T120V

649cc Petrol Class 2
90.6%
first-time pass rate
3.8%
failed outright
13,413
median miles at test
320
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2010–2014

The T120V's first-time pass rate has risen 6.1 points since 2010, 80.6% to 86.7%.

79%84%88%2010: 80.6% pass (31 tests)2014: 86.7% pass (30 tests)20102014

Pass rate by mileage

how the T120V's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage T120V passes first time 89.0% of the time; by 30k that's 93.9%.

86%93%100%0k: 89.0% pass (118 tests)10k: 87.9% pass (66 tests)20k: 98.1% pass (52 tests)30k: 93.9% pass (33 tests)0k20k30k

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 T120V

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
9 32.1
steering and suspension
9 32.1
brakes
4 14.3
fuel and exhaust
2 7.1
tyres and wheels
2 7.1
driving controls
1 3.6
body and structure
1 3.6

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 T120V 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 T120V.

Pass rate by registration year

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

Best year to buy used: 1972 (91.8% pass). Weakest: 1971 (88.4%).

88%90%93%1971: 88.4% pass (121 tests)1972: 91.8% pass (61 tests)1973: 90.7% pass (75 tests)197119721973

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.