Suzuki AN400 MOT pass rate and common failures
Suzuki AN400 motorcycles pass the MOT 86.84% of the time, measured across 722 tests in the DVSA record. A further 3.74% 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 26.5% of failed tests on this model.
- Then check less than 1.0 mm thick and has a serious fluid leak, the next two most common reasons.
- The most common advisory is tread depth is below minimum requirements of 1.0mm (6.9% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 23,393 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 | |
|---|---|---|---|
| 11-15 years | 82.44% | 131 | |
| 16+ years | 87.69% | 585 |
Why the Suzuki AN400 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 | 26.5% | 18 | |
| 2 | Less than 1.0 mm thick | 19.1% | 13 | |
| 3 | Has a serious fluid leak | 11.8% | 8 | |
| 4 | Tread depth is below minimum requirements of 1.0mm | 11.8% | 8 | |
| 5 | Contaminated | 10.3% | 7 | |
| 6 | Excessively binding | 8.8% | 6 | |
| 7 | Too high | 8.8% | 6 | |
| 8 | Has a major leak of exhaust gases | 7.4% | 5 | |
| 9 | Not working on dipped beam | 7.4% | 5 | |
| 10 | Rough when rotated | 7.4% | 5 |
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 | 6.9% | 50 | |
| 2 | Less than 1.0 mm thick | 6% | 43 | |
| 3 | Has a serious fluid leak | 5.1% | 37 | |
| 4 | Corroded to the extent that the rigidity of the assembly is significantly reduced | 4.7% | 34 | |
| 5 | Excessively binding | 4.3% | 31 | |
| 6 | Has a major leak of exhaust gases | 3.7% | 27 | |
| 7 | Indicates excessive fluctuation of brake effort | 3.5% | 25 | |
| 8 | Noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition | 3% | 22 | |
| 9 | In such a condition that it is seriously weakened | 2.1% | 15 | |
| 10 | Excessively stiff or notchy | 1.5% | 11 |
Suzuki AN400 for sale
No Suzuki AN400 in stock at the moment - 528 other Suzuki 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 CB500 · 497cc | 1,300 | 84.08% | 34,941 | |
| Honda CRF 300 LA-M · 286cc | 1,297 | 88.43% | 3,963 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method