BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

YAMAHA EW50

49cc Petrol Class 1
68.0%
first-time pass rate
22.1%
failed outright
8,158
median miles at test
2,271
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2022

The EW50's first-time pass rate has risen 11.7 points since 2005, 68.9% to 80.6%.

55%71%86%2005: 68.9% pass (90 tests)2006: 72.0% pass (347 tests)2007: 65.1% pass (255 tests)2008: 68.5% pass (197 tests)2009: 63.0% pass (211 tests)2010: 66.7% pass (195 tests)2011: 65.5% pass (177 tests)2012: 65.2% pass (135 tests)2013: 65.9% pass (129 tests)2014: 65.6% pass (93 tests)2015: 71.6% pass (88 tests)2016: 72.9% pass (70 tests)2017: 67.8% pass (59 tests)2018: 60.5% pass (38 tests)2019: 70.6% pass (34 tests)2021: 76.5% pass (34 tests)2022: 80.6% pass (36 tests)20052022

Pass rate by mileage

how the EW50's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage EW50 passes first time 70.8% of the time; by 20k that's 63.3%.

62%67%72%0k: 70.8% pass (1,447 tests)10k: 63.9% pass (681 tests)20k: 63.3% pass (90 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 EW50

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
808 48.7 3.9×
steering and suspension
302 18.2 2.9×
brakes
242 14.6 1.9×
lamps and reflectors
85 5.1 0.9×
tyres and wheels
79 4.8 1.5×
fuel and exhaust
62 3.7 3.3×
body and structure
30 1.8 2.6×
reg plates and vin
25 1.5 1.8×
steering
14 0.8 1.2×
Items Not Tested
13 0.8 5.3×

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

same type, similar capacity, high test volume

On first-time pass rate the EW50 beats 2 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 EW50.

Pass rate by registration year

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

Best year to buy used: 2003 (72.7% pass). Weakest: 2000 (66.4%).

65%70%74%2000: 66.4% pass (848 tests)2001: 66.5% pass (553 tests)2002: 68.4% pass (469 tests)2003: 72.7% pass (363 tests)200020022003

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 EW50 FAQ

answers computed from the data above · terms in the glossary

Is the YAMAHA EW50 reliable?

The YAMAHA EW50 is less reliable than average for its class: 68.0% of its 2,271 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4851 of 5426 models.

What does a EW50 fail its MOT on most?

lighting and signalling — 49% of all defects recorded against failed EW50 tests.

What is the best year of EW50 to buy used?

By first-time pass rate, 2003-registered examples do best (72.7%) and 2000 worst (66.4%). Condition and history still trump the year.

How many miles will a EW50 last?

The median EW50 shows 8,158 miles at test, and examples around 20k miles still pass 63.3% of the time — mileage alone rarely kills one.