YAMAHA YQ 50 AEROX

49cc Petrol Class 1

#5293 of 5426 overall #408 of 409 YAMAHAs #399 of 455 moped bikes

57.3%

first-time pass rate

33.5%

failed outright

11,784

median miles at test

4,773

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The YQ 50 AEROX's first-time pass rate has fallen 10.1 points since 2005, 64.6% to 54.5%.

Pass rate by mileage

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

A low-mileage YQ 50 AEROX passes first time 62.9% of the time; by 30k that's 53.3%.

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 YQ 50 AEROX

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	2,132	41.7	5.6×
brakes	1,076	21	3.5×
steering and suspension	818	16	4.0×
tyres and wheels	265	5.2	2.4×
lamps and reflectors	251	4.9	1.7×
fuel and exhaust	239	4.7	5.7×
body and structure	134	2.6	4.8×
reg plates and vin	89	1.7	2.7×
suspension	56	1.1	1.1×
structure and attachments	53	1	1.2×

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 YQ 50 AEROX 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 YQ 50 AEROX.

Pass rate by registration year

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

Best year to buy used: 2012 (66.9% pass). Weakest: 2004 (52.5%).

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.

YAMAHA YQ 50 AEROX FAQ

answers computed from the data above · terms in the glossary

Is the YAMAHA YQ 50 AEROX reliable?

The YAMAHA YQ 50 AEROX is less reliable than average for its class: 57.3% of its 4,773 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5293 of 5426 models.

What does a YQ 50 AEROX fail its MOT on most?

lighting and signalling — 42% of all defects recorded against failed YQ 50 AEROX tests.

What is the best year of YQ 50 AEROX to buy used?

By first-time pass rate, 2012-registered examples do best (66.9%) and 2004 worst (52.5%). Condition and history still trump the year.

How many miles will a YQ 50 AEROX last?

The median YQ 50 AEROX shows 11,784 miles at test, and examples around 30k miles still pass 53.3% of the time — mileage alone rarely kills one.