TRIUMPH ROCKET 3 GT

2458cc Petrol Class 2

#405 of 5426 overall #26 of 175 TRIUMPHs #77 of 465 cruiser bikes

92.4%

first-time pass rate

3.7%

failed outright

5,870

median miles at test

1,105

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2023–2025

The ROCKET 3 GT's first-time pass rate has risen 2.8 points since 2023, 90.9% to 93.7%.

Pass rate by mileage

how the ROCKET 3 GT's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage ROCKET 3 GT passes first time 93.7% of the time; by 20k that's 96.9%.

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 ROCKET 3 GT

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	28	42.4	0.4×
lamps and reflectors	20	30.3	0.9×
Identification of the vehicle	8	12.1	3.1×
tyres	4	6.1	0.5×
suspension	3	4.5	0.4×
structure and attachments	2	3	0.3×
audible warning (Horn)	1	1.5	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 ROCKET 3 GT beats 2 of its 2 closest rivals (TRIUMPH ROCKET III, TRIUMPH ROCKET 111).

TRIUMPH ROCKET III 88.3% pass · 15.5k tests TRIUMPH ROCKET 111 88.4% pass · 6,812 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 ROCKET 3 GT.

Pass rate by registration year

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

Best year to buy used: 2021 (94.5% pass). Weakest: 2020 (92.1%).

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 ROCKET 3 GT FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH ROCKET 3 GT reliable?

The TRIUMPH ROCKET 3 GT is more reliable than average for its class: 92.4% of its 1,105 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #405 of 5426 models.

What does a ROCKET 3 GT fail its MOT on most?

brakes — 42% of all defects recorded against failed ROCKET 3 GT tests.

What is the best year of ROCKET 3 GT to buy used?

By first-time pass rate, 2021-registered examples do best (94.5%) and 2022 worst (92.1%). Condition and history still trump the year.

How many miles will a ROCKET 3 GT last?

The median ROCKET 3 GT shows 5,870 miles at test, and examples around 20k miles still pass 96.9% of the time — mileage alone rarely kills one.