Pass rate over time
The TR6P's first-time pass rate has fallen 6.3 points since 2006, 98.0% to 91.7%.
Pass rate by mileage
A low-mileage TR6P passes first time 92.7% of the time; by 50k that's 89.5%.
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 TR6P
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| steering and suspension |
|
14 | 36.8 | 0.5× |
| brakes |
|
11 | 28.9 | 0.2× |
| lighting and signalling |
|
7 | 18.4 | 0.2× |
| tyres and wheels |
|
2 | 5.3 | 0.2× |
| fuel and exhaust |
|
1 | 2.6 | 0.2× |
| reg plates and vin |
|
1 | 2.6 | 0.3× |
| driving controls |
|
1 | 2.6 | 0.7× |
| body and structure |
|
1 | 2.6 | 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
On first-time pass rate the TR6P 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 TR6P.
Pass rate by registration year
Best year to buy used: 1967 (100.0% pass). Weakest: 1971 (87.7%).
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 TR6P FAQ
Is the TRIUMPH TR6P reliable?
The TRIUMPH TR6P is more reliable than average for its class: 92.5% of its 641 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #381 of 5426 models.
What does a TR6P fail its MOT on most?
steering and suspension — 37% of all defects recorded against failed TR6P tests.
What is the best year of TR6P to buy used?
By first-time pass rate, 1967-registered examples do best (100.0%) and 1971 worst (87.7%). Condition and history still trump the year.
How many miles will a TR6P last?
The median TR6P shows 12,957 miles at test, and examples around 50k miles still pass 89.5% of the time — mileage alone rarely kills one.