YAMAHA YP125

124cc Petrol Class 1

#4769 of 5426 overall #370 of 409 YAMAHAs #395 of 734 commuter bikes

69.5%

first-time pass rate

23.0%

failed outright

12,553

median miles at test

9,130

MOT tests, 2005–2025

Pass rate over time

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

The YP125's first-time pass rate has risen 6.6 points since 2005, 73.7% to 80.3%.

Pass rate by mileage

how the YP125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage YP125 passes first time 74.3% of the time; by 50k that's 70.7%.

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 YP125

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	1,451	27.2	2.7×
brakes	1,306	24.5	2.4×
steering and suspension	1,198	22.5	3.1×
tyres and wheels	746	14	3.4×
lamps and reflectors	183	3.4	0.9×
fuel and exhaust	158	3	1.9×
suspension	86	1.6	1.0×
body and structure	83	1.6	1.7×
tyres	77	1.4	0.9×
reg plates and vin	46	0.9	0.8×

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 YP125 beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

YAMAHA YBR 125 71.0% pass · 125k tests HONDA CG125 72.2% pass · 89.3k tests HONDA CBF125 73.3% pass · 84.4k tests GILERA RUNNER 70.8% pass · 69.9k 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 YP125.

Pass rate by registration year

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

Best year to buy used: 2012 (85.2% pass). Weakest: 2004 (64.2%).

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 YP125 FAQ

answers computed from the data above · terms in the glossary

Is the YAMAHA YP125 reliable?

The YAMAHA YP125 is less reliable than average for its class: 69.5% of its 9,130 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4769 of 5426 models.

What does a YP125 fail its MOT on most?

lighting and signalling — 27% of all defects recorded against failed YP125 tests.

What is the best year of YP125 to buy used?

By first-time pass rate, 2012-registered examples do best (85.2%) and 2004 worst (64.2%). Condition and history still trump the year.

How many miles will a YP125 last?

The median YP125 shows 12,553 miles at test, and examples around 50k miles still pass 70.7% of the time — mileage alone rarely kills one.