TRIUMPH TT600

599cc Petrol Class 2

#3601 of 5426 overall #171 of 175 TRIUMPHs #2295 of 2787 other bikes

79.9%

first-time pass rate

12.5%

failed outright

15,568

median miles at test

15.4k

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The TT600's first-time pass rate has fallen 4.5 points since 2005, 83.6% to 79.1%.

Pass rate by mileage

how the TT600's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage TT600 passes first time 86.9% of the time; by 50k that's 76.9%.

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 TT600

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	977	24.9	1.1×
brakes	917	23.3	1.0×
steering and suspension	777	19.8	1.3×
tyres and wheels	370	9.4	1.1×
lamps and reflectors	217	5.5	0.7×
drive system	186	4.7	1.4×
suspension	139	3.5	1.0×
body and structure	126	3.2	1.6×
structure and attachments	113	2.9	0.8×
reg plates and vin	106	2.7	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 TT600 beats 2 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 SUZUKI SV650S 80.6% pass · 84.6k 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 TT600.

Pass rate by registration year

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

Best year to buy used: 2004 (81.9% pass). Weakest: 2001 (79.1%).

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 TT600 FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH TT600 reliable?

The TRIUMPH TT600 is less reliable than average for its class: 79.9% of its 15,432 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #3601 of 5426 models.

What does a TT600 fail its MOT on most?

lighting and signalling — 25% of all defects recorded against failed TT600 tests.

What is the best year of TT600 to buy used?

By first-time pass rate, 2004-registered examples do best (81.9%) and 2001 worst (79.1%). Condition and history still trump the year.

How many miles will a TT600 last?

The median TT600 shows 15,568 miles at test, and examples around 50k miles still pass 76.9% of the time — mileage alone rarely kills one.