SYM JET 14 125 AC E5
The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.
“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.
Pass rate over time
The JET 14 125 AC E5's first-time pass rate has held steady since 2024 (73.7% → 74.7%).
Pass rate by mileage
A low-mileage JET 14 125 AC E5 passes first time 80.3% of the time; by 20k that's 70.0%.
First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.
What fails on a JET 14 125 AC E5
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lamps and reflectors |
|
79 | 35 | 6.9× |
| brakes |
|
45 | 19.9 | 1.5× |
| tyres |
|
44 | 19.5 | 10.9× |
| audible warning (Horn) |
|
17 | 7.5 | 16.8× |
| steering |
|
16 | 7.1 | 5.7× |
| suspension |
|
16 | 7.1 | 3.4× |
| structure and attachments |
|
6 | 2.7 | 1.6× |
| Identification of the vehicle |
|
3 | 1.3 | 2.3× |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.
How rivals compare
On first-time pass rate the JET 14 125 AC E5 beats 0 of its 4 closest rivals (PIAGGIO VESPA, HONDA PCX 125, HONDA Vision 110).
Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the JET 14 125 AC E5.
Compare with any bike
More SYM models
Pass rate by registration year
Best year to buy used: 2021 (75.5% pass). Weakest: 2022 (74.2%).
First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.
SYM JET 14 125 AC E5 FAQ
Is the SYM JET 14 125 AC E5 reliable?
The SYM JET 14 125 AC E5 is about average for its class: 75.0% of its 553 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4300 of 5428 models.
What does a JET 14 125 AC E5 fail its MOT on most?
lamps and reflectors — 35% of all defects recorded against failed JET 14 125 AC E5 tests.
How many miles will a JET 14 125 AC E5 last?
The median JET 14 125 AC E5 shows 8,634 miles at test, and examples around 20k miles still pass 70.0% of the time — mileage alone rarely kills one.
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