KTM 390 ADVENTURE 21 MOT pass rate and common failures
KTM 390 ADVENTURE 21 motorcycles pass the MOT 93.66% of the time, measured across 205 tests in the DVSA record. A further 1.95% 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 not working - it accounts for 22.2% of failed tests on this model.
- Then check does not conform to the specified requirements and does not illuminate by the operation of both brake controls, the next two most common reasons.
- The most common advisory is excessively loose (3.4% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 6,369 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 | 93.66% | 205 |
Why the KTM 390 ADVENTURE 21 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 | 22.2% | 2 | |
| 2 | Does not conform to the specified requirements | 11.1% | 1 | |
| 3 | Does not illuminate by the operation of both brake controls | 11.1% | 1 | |
| 4 | Excessively binding | 11.1% | 1 | |
| 5 | Faulty | 11.1% | 1 | |
| 6 | Fluid level below minimum level | 11.1% | 1 | |
| 7 | Grabbing severely | 11.1% | 1 | |
| 8 | Has a serious fluid leak | 11.1% | 1 | |
| 9 | Incorrect | 11.1% | 1 | |
| 10 | Missing | 11.1% | 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 | Excessively loose | 3.4% | 7 | |
| 2 | Worn to excess | 3.4% | 7 | |
| 3 | Excessively binding | 2% | 4 | |
| 4 | Has a serious fluid leak | 2% | 4 | |
| 5 | Sprocket worn to excess | 1.5% | 3 | |
| 6 | Tread depth is below minimum requirements of 1.0mm | 1.5% | 3 | |
| 7 | In such a condition that it is seriously weakened | 1% | 2 | |
| 8 | Indicates excessive fluctuation of brake effort | 1% | 2 | |
| 9 | Sprocket excessively loose | 1% | 2 | |
| 10 | Corroded so that its cross sectional area is reduced and seriously weakened | 0.5% | 1 |
KTM 390 ADVENTURE 21 for sale
No KTM 390 ADVENTURE 21 in stock at the moment - 297 other KTM bikes are advertised.
Similar bikes compared
Models of comparable capacity, so the comparison means something.
| Model | Tests | Pass rate | Avg mileage | |
|---|---|---|---|---|
| Piaggio VESPA GTS · 240-300cc | 4,305 | 92.15% | 9,875 | |
| Royal Enfield HIMALAYAN · 411cc | 2,371 | 88.49% | 8,163 | |
| Royal Enfield METEOR 350 · 349cc | 2,133 | 93.95% | 4,543 | |
| Honda NSS 250-297cc · 250-297cc | 1,397 | 90.34% | 17,407 | |
| Honda CRF 300 LA-M · 286cc | 1,297 | 88.43% | 3,963 | |
| BMW G310 · 313cc | 1,129 | 90.79% | 7,243 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method