BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ YAMAHA/CW 50 NG ORG
Model report · 2005–2025

YAMAHA CW 50 NG ORG

49cc Petrol Class 1
72.5%
first-time pass rate
18.3%
failed outright
8,755
median miles at test
597
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2008–2015

The CW 50 NG ORG's first-time pass rate has fallen 30.4 points since 2008, 89.2% to 58.8%.

51%74%97%2008: 89.2% pass (37 tests)2009: 75.4% pass (61 tests)2010: 71.6% pass (95 tests)2011: 62.5% pass (80 tests)2012: 68.7% pass (67 tests)2013: 69.8% pass (53 tests)2014: 86.8% pass (38 tests)2015: 58.8% pass (34 tests)20082015

Pass rate by mileage

how the CW 50 NG ORG's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage CW 50 NG ORG passes first time 78.9% of the time; by 20k that's 52.6%.

47%66%84%0k: 78.9% pass (327 tests)10k: 66.8% pass (190 tests)20k: 52.6% pass (57 tests)0k10k20k

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

failure defects by component group · advisories excluded
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

same type, similar capacity, high test volume

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.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2006 (75.9% pass). Weakest: 2005 (65.8%).

64%71%78%2004: 74.5% pass (98 tests)2005: 65.8% pass (117 tests)2006: 75.9% pass (199 tests)2007: 69.6% pass (138 tests)200420062007

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

answers computed from the data above · terms in the glossary

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 #4540 of 5426 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 — mileage alone rarely kills one.