SYM JET X 125 MOT pass rate and common failures
SYM JET X 125 motorcycles pass the MOT 73.76% of the time, measured across 282 tests in the DVSA record. A further 7.09% 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 less than 1.0 mm thick - it accounts for 48.1% of failed tests on this model.
- Then check tread depth is below minimum requirements of 1.0mm and not working, the next two most common reasons.
- The most common advisory is less than 1.0 mm thick (10.6% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 9,897 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 | 73.76% | 282 |
Why the SYM JET X 125 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 | Less than 1.0 mm thick | 48.1% | 26 | |
| 2 | Tread depth is below minimum requirements of 1.0mm | 35.2% | 19 | |
| 3 | Not working | 22.2% | 12 | |
| 4 | Does not illuminate by the operation of both brake controls | 16.7% | 9 | |
| 5 | Inoperative in the case of a single lamp or all lamps | 16.7% | 9 | |
| 6 | Does not illuminate simultaneously with the position lamp(s) | 14.8% | 8 | |
| 7 | Excessively binding | 14.8% | 8 | |
| 8 | Too low | 14.8% | 8 | |
| 9 | Rough when rotated | 9.3% | 5 | |
| 10 | Has a serious fluid leak | 7.4% | 4 |
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 | Less than 1.0 mm thick | 10.6% | 30 | |
| 2 | Tread depth is below minimum requirements of 1.0mm | 8.5% | 24 | |
| 3 | Excessively binding | 3.5% | 10 | |
| 4 | In such a condition that it is seriously weakened | 3.5% | 10 | |
| 5 | Significantly and obviously worn | 3.5% | 10 | |
| 6 | Indicates excessive fluctuation of brake effort | 2.5% | 7 | |
| 7 | Excessively stiff or notchy | 2.1% | 6 | |
| 8 | Has a serious fluid leak | 2.1% | 6 | |
| 9 | Tread not clearly visible | 2.1% | 6 | |
| 10 | Is bent and the brake cannot be readily applied | 1.8% | 5 |
SYM JET X 125 for sale
2 SYM JET X 125 adverts on MotoDealers UK right now, 9,173 SYM in total.
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