SYM JET 14 125 AC MOT pass rate and common failures

SYM JET 14 125 AC motorcycles pass the MOT 72.51% of the time, measured across 422 tests in the DVSA record. A further 7.82% passed only after a defect was put right at the test station.

Worse than average: 14.4 points below the 86.87% figure for all motorcycles tested.

Pass rate 72.51% 306 of 422

Fixed at the station 7.82% passed after an on-the-spot repair

Average mileage at test 12,028 miles

Average age at test 3.42 years old

Engine 125cc MOT class 1 and 2

For sale now 0 SYM JET 14 125 AC adverts

What to check before the MOT

Built from this model's own failure record, not general advice.

Start with not working - it accounts for 59% of failed tests on this model.
Then check tread depth is below minimum requirements of 1.0mm and too low, the next two most common reasons.
The most common advisory is tread depth is below minimum requirements of 1.0mm (9.2% of all tests) - not a failure, but money you will spend sooner or later.
Average recorded mileage at test is 12,028 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	72.51%		422

Why the SYM JET 14 125 AC 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	59%	49
2	Tread depth is below minimum requirements of 1.0mm	34.9%	29
3	Too low	20.5%	17
4	Less than 1.0 mm thick	15.7%	13
5	Remains on when the brakes are released	13.3%	11
6	Excessively binding	12%	10
7	Has excessive wear or free play	8.4%	7
8	Has insufficient reserve travel	7.2%	6
9	Has a serious fluid leak	6%	5
10	Insecure	6%	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	9.2%	39
2	Less than 1.0 mm thick	6.4%	27
3	Indicates excessive fluctuation of brake effort	3.3%	14
4	Tread not clearly visible	3.3%	14
5	Excessively binding	2.6%	11
6	Is bent and the brake cannot be readily applied	2.6%	11
7	Has a serious fluid leak	2.4%	10
8	Excessively stiff or notchy	2.1%	9
9	Inscription illegible	1.7%	7
10	Has excessive wear or free play	1.4%	6

SYM JET 14 125 AC for sale

No SYM JET 14 125 AC in stock at the moment - 9,177 other SYM bikes are advertised.

Used SYM JET 14 125 AC Used SYM All SYM SYM MOT statistics

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

SYM JET 14 125 AC MOT questions

What is the MOT pass rate for the SYM JET 14 125 AC?+

72.51% of SYM JET 14 125 AC MOT tests end in a pass, based on 422 tests in the DVSA dataset.

What is the most common MOT failure on a SYM JET 14 125 AC?+

Not working, which appears in 59% of failed tests on this model.

Where does this data come from?+

From the DVSA anonymised MOT testing dataset, which records every MOT carried out in England, Scotland and Wales. It is published under the Open Government Licence and covers 2025.

Does a high pass rate mean the bike is reliable?+

Not by itself. The MOT checks safety items - brakes, tyres, lights, structure - and says nothing about engines, gearboxes or electrics. Read it as a maintenance signal, not a reliability score.