Data as of: DVSA MOT results to 2025
YAMAHA CW 50 NG ORG
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 CW 50 NG ORG's first-time pass rate has fallen 30.4 points since 2008, 89.2% to 58.8%.
Pass rate by mileage
A low-mileage CW 50 NG ORG passes first time 78.9% of the time; by 20k that's 52.6%.
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 CW 50 NG ORG
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lighting and signalling |
|
90 | 31.4 | 2.4× |
| steering and suspension |
|
72 | 25.1 | 2.9× |
| brakes |
|
43 | 15 | 1.4× |
| tyres and wheels |
|
30 | 10.5 | 2.0× |
| body and structure |
|
14 | 4.9 | 4.5× |
| fuel and exhaust |
|
12 | 4.2 | 2.4× |
| suspension |
|
10 | 3.5 | 1.6× |
| reg plates and vin |
|
7 | 2.4 | 1.5× |
| lamps and reflectors |
|
6 | 2.1 | 0.4× |
| audible warning (Horn) |
|
3 | 1 | 2.7× |
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 CW 50 NG ORG 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 CW 50 NG ORG.
Compare with any bike
More YAMAHA models
Pass rate by registration year
Highest pass rate: 2006 (75.9%). Lowest: 2005 (65.8%). Every CW 50 NG Org year compared →
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 CW 50 NG ORG FAQ
Is the YAMAHA CW 50 NG ORG reliable?
The YAMAHA CW 50 NG ORG is about average for its class: 72.5% of its 597 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4542 of 5428 models.
What does a CW 50 NG ORG fail its MOT on most?
lighting and signalling: 31% of all defects recorded against failed CW 50 NG ORG tests.
What is the best year of CW 50 NG ORG to buy used?
By first-time pass rate, 2006-registered examples do best (75.9%) and 2005 worst (65.8%). Condition and history still trump the year.
How many miles will a CW 50 NG ORG last?
The median CW 50 NG ORG shows 8,755 miles at test, and examples around 20k miles still pass 52.6% of the time, so mileage alone rarely decides the result.
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