TRIUMPH T150

750cc Petrol Class 2

#1303 of 5426 overall #93 of 175 TRIUMPHs #798 of 2787 other bikes

88.9%

first-time pass rate

3.4%

failed outright

19,890

median miles at test

813

MOT tests, 2005–2025

Pass rate over time

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

The T150's first-time pass rate has fallen 1.1 points since 2006, 88.1% to 87.0%.

Pass rate by mileage

how the T150's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage T150 passes first time 91.8% of the time; by 30k that's 90.0%.

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 T150

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	15	31.2	0.3×
steering and suspension	13	27.1	0.4×
brakes	11	22.9	0.3×
tyres and wheels	5	10.4	0.2×
fuel and exhaust	2	4.2	0.3×
body and structure	1	2.1	0.3×
driving controls	1	2.1	0.5×

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 T150 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 TRIUMPH SPRINT 85.6% pass · 133k 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 T150.

Pass rate by registration year

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

Best year to buy used: 1969 (94.5% pass). Weakest: 1972 (86.5%).

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 T150 FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH T150 reliable?

The TRIUMPH T150 is more reliable than average for its class: 88.9% of its 813 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1303 of 5426 models.

What does a T150 fail its MOT on most?

lighting and signalling — 31% of all defects recorded against failed T150 tests.

What is the best year of T150 to buy used?

By first-time pass rate, 1969-registered examples do best (94.5%) and 1972 worst (86.5%). Condition and history still trump the year.

How many miles will a T150 last?

The median T150 shows 19,890 miles at test, and examples around 30k miles still pass 90.0% of the time — mileage alone rarely kills one.