BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ HUONIAO/HN 125-8
Model report · 2005–2025

HUONIAO HN 125-8

125cc Petrol Class 1
#5288 of 5426 overall #2 of 2 HUONIAOs #663 of 734 commuter bikes
57.5%
first-time pass rate
29.0%
failed outright
7,887
median miles at test
3,127
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2009–2025

The HN 125-8's first-time pass rate has risen 9.2 points since 2009, 57.5% to 66.7%.

44%58%71%2009: 57.5% pass (40 tests)2010: 63.0% pass (92 tests)2011: 52.9% pass (170 tests)2012: 60.7% pass (219 tests)2013: 59.4% pass (293 tests)2014: 58.3% pass (384 tests)2015: 54.1% pass (495 tests)2016: 53.2% pass (444 tests)2017: 62.3% pass (284 tests)2018: 59.6% pass (156 tests)2019: 64.9% pass (134 tests)2020: 56.7% pass (97 tests)2021: 57.0% pass (93 tests)2022: 48.8% pass (82 tests)2023: 62.3% pass (69 tests)2024: 50.0% pass (38 tests)2025: 66.7% pass (36 tests)20092025

Pass rate by mileage

how the HN 125-8's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage HN 125-8 passes first time 61.0% of the time; by 30k that's 48.8%.

46%55%63%0k: 61.0% pass (1,954 tests)10k: 50.2% pass (892 tests)20k: 56.7% pass (210 tests)30k: 48.8% pass (41 tests)0k20k30k

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 HN 125-8

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
913 30.6 3.8×
steering and suspension
495 16.6 3.4×
brakes
434 14.6 2.4×
drive system
275 9.2 8.5×
lamps and reflectors
221 7.4 2.5×
tyres and wheels
156 5.2 1.9×
structure and attachments
154 5.2 4.5×
body and structure
148 5 7.7×
fuel and exhaust
105 3.5 3.4×
suspension
80 2.7 2.5×

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 HN 125-8 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 HN 125-8.

Pass rate by registration year

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

Best year to buy used: 2006 (62.1% pass). Weakest: 2013 (55.0%).

54%59%64%2006: 62.1% pass (269 tests)2007: 58.5% pass (354 tests)2008: 60.0% pass (403 tests)2009: 57.5% pass (334 tests)2010: 58.4% pass (486 tests)2011: 55.3% pass (586 tests)2012: 55.4% pass (484 tests)2013: 55.0% pass (171 tests)200620102013

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.

HUONIAO HN 125-8 FAQ

answers computed from the data above · terms in the glossary

Is the HUONIAO HN 125-8 reliable?

The HUONIAO HN 125-8 is less reliable than average for its class: 57.5% of its 3,127 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5288 of 5426 models.

What does a HN 125-8 fail its MOT on most?

lighting and signalling — 31% of all defects recorded against failed HN 125-8 tests.

What is the best year of HN 125-8 to buy used?

By first-time pass rate, 2006-registered examples do best (62.1%) and 2013 worst (55.0%). Condition and history still trump the year.

How many miles will a HN 125-8 last?

The median HN 125-8 shows 7,887 miles at test, and examples around 30k miles still pass 48.8% of the time — mileage alone rarely kills one.