HONDA MBX125

124cc Petrol Class 1

#4171 of 5426 overall #794 of 921 HONDAs #203 of 734 commuter bikes

76.1%

first-time pass rate

14.9%

failed outright

18,731

median miles at test

309

MOT tests, 2005–2025

Pass rate by mileage

how the MBX125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage MBX125 passes first time 88.0% of the time; by 30k that's 57.1%.

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 MBX125

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	37	27.8
brakes	24	18
steering and suspension	22	16.5
tyres and wheels	13	9.8
body and structure	10	7.5
drive system	9	6.8
lamps and reflectors	7	5.3
tyres	5	3.8
steering	3	2.3
fuel and exhaust	3	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 MBX125 beats 4 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 MBX125.

Pass rate by registration year

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

Best year to buy used: 1984 (80.0% pass). Weakest: 1985 (70.8%).

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.