Triumph BONNEVILLE 642-904cc MOT pass rate and common failures
Triumph BONNEVILLE 642-904cc motorcycles pass the MOT 90.8% of the time, measured across 12,456 tests in the DVSA record. A further 4.66% passed only after a defect was put right at the test station.
Calculated from DVSA records for Triumph BONNEVILLE, 642-904cc.
What to check before the MOT
Built from this model's own failure record, not general advice.
- Start with not working - it accounts for 40.5% of failed tests on this model.
- Then check missing and too high, the next two most common reasons.
- The most common advisory is tread depth is below minimum requirements of 1.0mm (4.9% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 12,824 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 | 92.61% | 853 | |
| 6-10 years | 91.67% | 5,105 | |
| 11-15 years | 90.98% | 2,906 | |
| 16+ years | 88.98% | 3,592 |
Why the Triumph BONNEVILLE 642-904cc 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 | Not working | 40.5% | 229 | |
| 2 | Missing | 24.2% | 137 | |
| 3 | Too high | 24.1% | 136 | |
| 4 | Too low | 16.6% | 94 | |
| 5 | Tread depth is below minimum requirements of 1.0mm | 15.8% | 89 | |
| 6 | Less than 1.0 mm thick | 15.4% | 87 | |
| 7 | Does not conform to the specified requirements | 13.3% | 75 | |
| 8 | Not working on dipped beam | 10.8% | 61 | |
| 9 | Insecure | 9.4% | 53 | |
| 10 | Excessively binding | 8.7% | 49 |
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 | 4.9% | 610 | |
| 2 | Noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition | 4.8% | 596 | |
| 3 | Less than 1.0 mm thick | 4% | 500 | |
| 4 | Excessively loose | 2% | 247 | |
| 5 | Indicates excessive fluctuation of brake effort | 1.8% | 225 | |
| 6 | Excessively binding | 1.2% | 150 | |
| 7 | Tread not clearly visible | 0.9% | 116 | |
| 8 | Excessively stiff or notchy | 0.9% | 115 | |
| 9 | Worn to excess | 0.9% | 106 | |
| 10 | Has a serious fluid leak | 0.6% | 75 |
Triumph BONNEVILLE 642-904cc for sale
No Triumph BONNEVILLE 642-904cc in stock at the moment - 108 other Triumph bikes are advertised.
Similar bikes compared
Models of comparable capacity, so the comparison means something.
| Model | Tests | Pass rate | Avg mileage | |
|---|---|---|---|---|
| Triumph TIGER · 969cc | 16,144 | 91.27% | 22,934 | |
| BMW S 1000 · 999cc | 8,445 | 91.96% | 15,282 | |
| Yamaha YZF R1 · 998cc | 6,022 | 88.01% | 23,152 | |
| Yamaha MT 800-1000cc · 800-1000cc | 5,720 | 90.98% | 16,130 | |
| Honda NC · 741cc | 5,311 | 89.53% | 22,765 | |
| Triumph SPRINT · 1,015cc | 5,210 | 86.68% | 29,928 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method