Triumph BONNEVILLE T100 MOT pass rate and common failures
Triumph BONNEVILLE T100 motorcycles pass the MOT 93.33% of the time, measured across 495 tests in the DVSA record. A further 2.83% 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 missing - it accounts for 26.3% 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 (4.4% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 9,845 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 | 94.68% | 301 | |
| 16+ years | 92.35% | 170 |
Why the Triumph BONNEVILLE T100 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 | Missing | 26.3% | 5 | |
| 2 | Not working | 26.3% | 5 | |
| 3 | Does not conform to the specified requirements | 21.1% | 4 | |
| 4 | Less than 1.0 mm thick | 21.1% | 4 | |
| 5 | Has a serious fluid leak | 15.8% | 3 | |
| 6 | Too high | 10.5% | 2 | |
| 7 | Does not illuminate by the operation of both brake controls | 5.3% | 1 | |
| 8 | Excessively binding | 5.3% | 1 | |
| 9 | Excessively distorted | 5.3% | 1 | |
| 10 | Excessively loose | 5.3% | 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 | 4.4% | 22 | |
| 2 | Less than 1.0 mm thick | 4.2% | 21 | |
| 3 | Indicates excessive fluctuation of brake effort | 1.8% | 9 | |
| 4 | Noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition | 1.4% | 7 | |
| 5 | Excessively binding | 1% | 5 | |
| 6 | Excessively loose | 0.6% | 3 | |
| 7 | Significantly and obviously worn | 0.6% | 3 | |
| 8 | Worn to excess | 0.6% | 3 | |
| 9 | Has excessive play | 0.4% | 2 | |
| 10 | Is so short that the brake cannot be readily applied | 0.4% | 2 |
Triumph BONNEVILLE T100 for sale
3 Triumph BONNEVILLE T100 adverts on MotoDealers UK right now, 108 Triumph in total.
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 | |
| Triumph BONNEVILLE 642-904cc · 642-904cc | 12,456 | 90.8% | 12,824 | |
| 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 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method