YAMAHA YZ125
Pass rate over time
The YZ125's first-time pass rate has risen 3.8 points since 2012, 75.0% to 78.8%.
What fails on a YZ125
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lighting and signalling |
|
74 | 20.9 | 1.4× |
| steering and suspension |
|
71 | 20.1 | 2.4× |
| brakes |
|
63 | 17.8 | 1.4× |
| tyres and wheels |
|
44 | 12.4 | 2.3× |
| lamps and reflectors |
|
37 | 10.5 | 1.6× |
| suspension |
|
17 | 4.8 | 2.7× |
| drive system |
|
16 | 4.5 | 3.0× |
| tyres |
|
11 | 3.1 | 1.4× |
| reg plates and vin |
|
11 | 3.1 | 2.9× |
| fuel and exhaust |
|
10 | 2.8 | 1.7× |
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 YZ125 beats 4 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).
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 YZ125.
YAMAHA YZ125 FAQ
Is the YAMAHA YZ125 reliable?
The YAMAHA YZ125 is about average for its class: 75.0% of its 609 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4298 of 5426 models.
What does a YZ125 fail its MOT on most?
lighting and signalling — 21% of all defects recorded against failed YZ125 tests.