APRILIA SX 125

124cc Petrol Class 1

#5029 of 5426 overall #104 of 128 APRILIAs #526 of 734 commuter bikes

64.7%

first-time pass rate

24.0%

failed outright

7,066

median miles at test

337

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2024–2025

The SX 125's first-time pass rate has fallen 1.7 points since 2024, 71.4% to 69.7%.

What fails on a SX 125

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lamps and reflectors	67	25.2
brakes	53	19.9
suspension	34	12.8
lighting and signalling	34	12.8
structure and attachments	31	11.7
steering and suspension	12	4.5
audible warning (Horn)	10	3.8
tyres and wheels	10	3.8
steering	9	3.4
drive system	6	2.3

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 SX 125 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 SX 125.

Pass rate by registration year

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

Best year to buy used: 2022 (70.7% pass). Weakest: 2021 (67.9%).

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.