SYM JET 14 125 E4 MOT pass rate and common failures
SYM JET 14 125 E4 motorcycles pass the MOT 73.62% of the time, measured across 326 tests in the DVSA record. A further 6.75% 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 35.9% of failed tests on this model.
- Then check tread depth is below minimum requirements of 1.0mm and excessively binding, the next two most common reasons.
- The most common advisory is tread depth is below minimum requirements of 1.0mm (10.7% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 14,794 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 | 72.41% | 232 | |
| 6-10 years | 76.6% | 94 |
Why the SYM JET 14 125 E4 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 | 35.9% | 23 | |
| 2 | Tread depth is below minimum requirements of 1.0mm | 25% | 16 | |
| 3 | Excessively binding | 21.9% | 14 | |
| 4 | Has insufficient reserve travel | 14.1% | 9 | |
| 5 | Does not illuminate by the operation of both brake controls | 12.5% | 8 | |
| 6 | Too low | 10.9% | 7 | |
| 7 | Insecure | 9.4% | 6 | |
| 8 | Remains on when the brakes are released | 9.4% | 6 | |
| 9 | The less effective brake control does not achieve an efficiency of 25% | 9.4% | 6 | |
| 10 | Inoperative in the case of a single lamp or all lamps | 7.8% | 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 | 10.7% | 35 | |
| 2 | Is bent and the brake cannot be readily applied | 6.4% | 21 | |
| 3 | Less than 1.0 mm thick | 6.1% | 20 | |
| 4 | Has a major leak of exhaust gases | 4.3% | 14 | |
| 5 | Excessively stiff or notchy | 3.7% | 12 | |
| 6 | Is so short that the brake cannot be readily applied | 3.4% | 11 | |
| 7 | Tread not clearly visible | 2.5% | 8 | |
| 8 | Excessively binding | 2.1% | 7 | |
| 9 | Has excessive wear or free play | 2.1% | 7 | |
| 10 | Noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition | 2.1% | 7 |
SYM JET 14 125 E4 for sale
No SYM JET 14 125 E4 in stock at the moment - 9,173 other SYM bikes are advertised.
Similar bikes compared
Models of comparable capacity, so the comparison means something.
| Model | Tests | Pass rate | Avg mileage | |
|---|---|---|---|---|
| Yamaha GPD125-A NMAX 125 · 125cc | 8,762 | 80.8% | 45,039 | |
| Piaggio VESPA 79-210cc · 79-210cc | 8,363 | 85.42% | 11,710 | |
| Honda WW · 125cc | 7,252 | 80.32% | 40,134 | |
| Honda WW 125 A-M · 125cc | 5,011 | 84.06% | 29,846 | |
| Honda GLR · 125cc | 4,737 | 79.99% | 14,642 | |
| Honda CBF 100-125cc · 100-125cc | 3,204 | 77% | 15,203 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method