Triumph ROCKET 3 GT MOT pass rate and common failures
Triumph ROCKET 3 GT motorcycles pass the MOT 93.68% of the time, measured across 570 tests in the DVSA record. A further 2.46% passed only after a defect was put right at the test station.
What to check before the MOT
Built from this model's own failure record, not general advice.
- Start with too high - it accounts for 40.9% of failed tests on this model.
- Then check not working and does not conform to the specified requirements, the next two most common reasons.
- The most common advisory is tread depth is below minimum requirements of 1.0mm (4.7% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 7,759 miles, which is the number to compare any advert against.
Pass rate by age
A single pass rate hides the most useful thing in this data: how the same model behaves at three years old and at fifteen.
| Age at test | Pass rate | Tests | |
|---|---|---|---|
| 3-5 years | 93.68% | 570 |
Why the Triumph ROCKET 3 GT fails
Share of failed tests on this model where the item was recorded. One test can fail on several items, so the column does not add up to 100%.
| # | Item | Of failures | Tests | |
|---|---|---|---|---|
| 1 | Too high | 40.9% | 9 | |
| 2 | Not working | 31.8% | 7 | |
| 3 | Does not conform to the specified requirements | 27.3% | 6 | |
| 4 | The less effective brake control does not achieve an efficiency of 25% | 27.3% | 6 | |
| 5 | Effort inadequate at a wheel | 22.7% | 5 | |
| 6 | Tread depth is below minimum requirements of 1.0mm | 22.7% | 5 | |
| 7 | Less than 1.0 mm thick | 13.6% | 3 | |
| 8 | Missing | 9.1% | 2 | |
| 9 | Defective but brake still operating | 4.5% | 1 | |
| 10 | Has insufficient reserve travel | 4.5% | 1 |
Most common advisories
Not a failure and not a legal requirement to fix - but an advisory that repeats year after year is money the next owner spends.
| # | Item | Of all tests | Tests | |
|---|---|---|---|---|
| 1 | Tread depth is below minimum requirements of 1.0mm | 4.7% | 27 | |
| 2 | Indicates excessive fluctuation of brake effort | 2.8% | 16 | |
| 3 | Less than 1.0 mm thick | 2.5% | 14 | |
| 4 | Noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition | 2.3% | 13 | |
| 5 | Has a serious fluid leak | 0.5% | 3 | |
| 6 | Light intensity significantly reduced | 0.4% | 2 | |
| 7 | Tread not clearly visible | 0.4% | 2 | |
| 8 | Excessively binding | 0.2% | 1 | |
| 9 | Has an excessively worn bush | 0.2% | 1 | |
| 10 | Has negligible damping effect | 0.2% | 1 |
Triumph ROCKET 3 GT for sale
No Triumph ROCKET 3 GT in stock at the moment - 107 other Triumph bikes are advertised.
Similar bikes compared
Models of comparable capacity, so the comparison means something.
| Model | Tests | Pass rate | Avg mileage | |
|---|---|---|---|---|
| Triumph ROCKET III · 2,297cc | 861 | 88.62% | 21,945 | |
| Honda GL · 1,797cc | 432 | 95.14% | 21,693 | |
| Triumph ROCKET · 2,296cc | 401 | 91.52% | 16,010 | |
| Harley-Davidson FXFBS FAT BOB 114 1868 19 · 1,869cc | 400 | 89.75% | 8,680 | |
| Triumph ROCKET 3 R · 2,459cc | 373 | 95.44% | 7,668 | |
| Harley-Davidson FLSB SPORT GLIDE 1745 20 · 1,746cc | 339 | 94.69% | 10,292 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method