TRIUMPH T90

350cc Petrol Class 2

#1024 of 5426 overall #76 of 175 TRIUMPHs #627 of 2787 other bikes

89.8%

first-time pass rate

4.0%

failed outright

9,338

median miles at test

1,189

MOT tests, 2005–2025

Pass rate over time

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

The T90's first-time pass rate has held steady since 2006 (93.7% → 93.2%).

Pass rate by mileage

how the T90's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage T90 passes first time 91.5% 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 T90

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	38	32.2	0.5×
steering and suspension	30	25.4	0.7×
brakes	20	16.9	0.3×
tyres and wheels	10	8.5	0.3×
fuel and exhaust	8	6.8	0.8×
driving controls	4	3.4	1.1×
body and structure	3	2.5	0.5×
drive system	3	2.5	0.3×
reg plates and vin	2	1.7	0.3×

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 T90 beats 4 of its 4 closest rivals (SUZUKI AN400, SUZUKI DR-Z400S, YAMAHA RD350).

SUZUKI AN400 86.2% pass · 27.1k tests SUZUKI DR-Z400S 80.4% pass · 26.8k tests YAMAHA RD350 86.3% pass · 19.6k tests KAWASAKI ZXR400 73.1% pass · 14.2k 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 T90.

Pass rate by registration year

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

Best year to buy used: 1968 (92.2% pass). Weakest: 1967 (88.0%).

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 T90 FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH T90 reliable?

The TRIUMPH T90 is more reliable than average for its class: 89.8% of its 1,189 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1024 of 5426 models.

What does a T90 fail its MOT on most?

lighting and signalling — 32% of all defects recorded against failed T90 tests.

What is the best year of T90 to buy used?

By first-time pass rate, 1968-registered examples do best (92.2%) and 1967 worst (88.0%). Condition and history still trump the year.

How many miles will a T90 last?

The median T90 shows 9,338 miles at test, and examples around 40k miles still pass 87.1% of the time — mileage alone rarely kills one.