TRIUMPH T509 SPEED TRIPLE

885cc Petrol Class 2

#3334 of 5426 overall #165 of 175 TRIUMPHs #158 of 205 naked bikes

81.2%

first-time pass rate

11.6%

failed outright

21,923

median miles at test

1,913

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2025

The T509 SPEED TRIPLE's first-time pass rate has risen 3.7 points since 2006, 83.3% to 87.0%.

Pass rate by mileage

how the T509 SPEED TRIPLE's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage T509 SPEED TRIPLE passes first time 84.2% of the time; by 50k that's 72.7%.

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 T509 SPEED TRIPLE

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	132	30.2	1.1×
brakes	87	19.9	0.9×
steering and suspension	64	14.6	1.0×
tyres and wheels	47	10.8	1.2×
fuel and exhaust	29	6.6	1.9×
drive system	20	4.6	1.2×
reg plates and vin	19	4.3	1.5×
lamps and reflectors	19	4.3	0.4×
suspension	12	2.7	0.6×
body and structure	8	1.8	0.9×

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 T509 SPEED TRIPLE beats 0 of its 4 closest rivals (TRIUMPH SPEED TRIPLE, TRIUMPH STREET TRIPLE, APRILIA TUONO).

TRIUMPH SPEED TRIPLE 85.6% pass · 74.6k tests TRIUMPH STREET TRIPLE 87.7% pass · 37.7k tests APRILIA TUONO 88.4% pass · 34.7k tests TRIUMPH TRIDENT 85.0% pass · 23.9k 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 T509 SPEED TRIPLE.

Pass rate by registration year

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

Best year to buy used: 1997 (82.5% pass). Weakest: 1999 (79.3%).

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 T509 SPEED TRIPLE FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH T509 SPEED TRIPLE reliable?

The TRIUMPH T509 SPEED TRIPLE is less reliable than average for its class: 81.2% of its 1,913 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #3334 of 5426 models.

What does a T509 SPEED TRIPLE fail its MOT on most?

lighting and signalling — 30% of all defects recorded against failed T509 SPEED TRIPLE tests.

What is the best year of T509 SPEED TRIPLE to buy used?

By first-time pass rate, 1997-registered examples do best (82.5%) and 1999 worst (79.3%). Condition and history still trump the year.

How many miles will a T509 SPEED TRIPLE last?

The median T509 SPEED TRIPLE shows 21,923 miles at test, and examples around 50k miles still pass 72.7% of the time — mileage alone rarely kills one.