Pass rate over time
The CY50's first-time pass rate has risen 11.9 points since 2005, 71.4% to 83.3%.
What fails on a CY50
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lighting and signalling |
|
125 | 40.7 | 2.1× |
| steering and suspension |
|
78 | 25.4 | 2.8× |
| brakes |
|
45 | 14.7 | 1.0× |
| tyres and wheels |
|
26 | 8.5 | 1.6× |
| fuel and exhaust |
|
20 | 6.5 | 3.0× |
| body and structure |
|
6 | 2 | 1.7× |
| Items Not Tested |
|
4 | 1.3 | 4.4× |
| drive system |
|
1 | 0.3 | 0.2× |
| steering |
|
1 | 0.3 | 0.3× |
| lamps and reflectors |
|
1 | 0.3 | 0.1× |
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 CY50 beats 4 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).
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 CY50.
Pass rate by registration year
Best year to buy used: 1995 (83.3% pass). Weakest: 2002 (70.1%).
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.
YAMAHA CY50 FAQ
Is the YAMAHA CY50 reliable?
The YAMAHA CY50 is more reliable than average for its class: 76.5% of its 744 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4123 of 5426 models.
What does a CY50 fail its MOT on most?
lighting and signalling — 41% of all defects recorded against failed CY50 tests.
What is the best year of CY50 to buy used?
By first-time pass rate, 1995-registered examples do best (83.3%) and 2002 worst (70.1%). Condition and history still trump the year.