YAMAHA NS 50 AEROX R

49cc Petrol Class 1

#5121 of 5426 overall #398 of 409 YAMAHAs #356 of 455 moped bikes

62.7%

first-time pass rate

25.1%

failed outright

10,378

median miles at test

434

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2016–2023

The NS 50 AEROX R's first-time pass rate has fallen 3.7 points since 2016, 61.8% to 58.1%.

Pass rate by mileage

how the NS 50 AEROX R's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage NS 50 AEROX R passes first time 68.5% of the time; by 20k that's 53.1%.

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 NS 50 AEROX R

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lamps and reflectors	101	29.9
brakes	84	24.9
lighting and signalling	42	12.4
tyres	21	6.2
structure and attachments	20	5.9
suspension	18	5.3
steering and suspension	17	5
fuel and exhaust	16	4.7
steering	10	3
body and structure	9	2.7

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the NS 50 AEROX R beats 0 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests PIAGGIO ZIP 71.3% pass · 79.0k tests PIAGGIO NRG 65.5% pass · 40.5k tests PEUGEOT VIVACITY 70.4% pass · 29.7k tests

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 NS 50 AEROX R.

Pass rate by registration year

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

Best year to buy used: 2013 (62.5% pass). Weakest: 2013 (62.5%).

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.