APRILIA 125 ST

125cc Petrol Class 1

#4824 of 5426 overall #91 of 128 APRILIAs #430 of 734 commuter bikes

68.5%

first-time pass rate

24.5%

failed outright

13,488

median miles at test

216

MOT tests, 2005–2025

Pass rate by mileage

how the 125 ST's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage 125 ST passes first time 78.8% of the time; by 20k that's 67.6%.

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 125 ST

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	58	33.3
steering and suspension	43	24.7
brakes	27	15.5
drive system	17	9.8
body and structure	11	6.3
tyres and wheels	7	4
fuel and exhaust	6	3.4
reg plates and vin	4	2.3
Items Not Tested	1	0.6

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 125 ST 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 125 ST.

Pass rate by registration year

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

Best year to buy used: 2000 (71.4% pass). Weakest: 2000 (71.4%).

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.