BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

HONDA CG125

124cc Petrol Class 1
#4566 of 5426 overall #864 of 921 HONDAs #309 of 734 commuter bikes
72.2%
first-time pass rate
16.8%
failed outright
17,460
median miles at test
89.3k
MOT tests, 2005–2025

Pass rate over time

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

The CG125's first-time pass rate has held steady since 2005 (75.4% → 76.4%).

68%73%78%2005: 75.4% pass (1,633 tests)2006: 76.2% pass (6,709 tests)2007: 74.3% pass (6,401 tests)2008: 73.3% pass (6,578 tests)2009: 71.1% pass (6,979 tests)2010: 71.8% pass (6,830 tests)2011: 70.6% pass (6,945 tests)2012: 70.6% pass (6,487 tests)2013: 69.4% pass (5,824 tests)2014: 69.3% pass (5,349 tests)2015: 70.9% pass (4,763 tests)2016: 71.1% pass (4,193 tests)2017: 72.7% pass (3,665 tests)2018: 72.6% pass (2,536 tests)2019: 71.8% pass (2,402 tests)2020: 73.6% pass (2,140 tests)2021: 73.9% pass (2,507 tests)2022: 73.5% pass (2,327 tests)2023: 74.4% pass (2,055 tests)2024: 73.0% pass (1,469 tests)2025: 76.4% pass (1,553 tests)20052025

Pass rate by mileage

how the CG125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage CG125 passes first time 79.3% of the time; by 50k that's 65.8%.

63%73%82%0k: 79.3% pass (22,987 tests)10k: 73.0% pass (27,804 tests)20k: 68.3% pass (19,492 tests)30k: 66.4% pass (9,781 tests)40k: 66.2% pass (4,463 tests)50k: 65.8% pass (2,043 tests)0k30k50k

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 CG125

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
14,046 32.3 2.1×
steering and suspension
8,676 20 2.1×
brakes
6,507 15 1.2×
tyres and wheels
4,167 9.6 2.0×
drive system
3,248 7.5 3.6×
lamps and reflectors
2,843 6.5 1.1×
structure and attachments
1,283 3 1.4×
body and structure
991 2.3 1.9×
fuel and exhaust
909 2.1 1.2×
suspension
809 1.9 0.9×

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 CG125 beats 3 of its 4 closest rivals (YAMAHA YBR 125, HONDA CBF125, GILERA RUNNER).

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 CG125.

Pass rate by registration year

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

Best year to buy used: 1980 (79.1% pass). Weakest: 1978 (67.0%).

65%73%82%1971: 74.6% pass (59 tests)1976: 75.1% pass (193 tests)1977: 76.8% pass (508 tests)1978: 67.0% pass (367 tests)1979: 78.7% pass (343 tests)1980: 79.1% pass (494 tests)1981: 72.5% pass (542 tests)1982: 73.4% pass (704 tests)1983: 71.9% pass (384 tests)1984: 72.7% pass (392 tests)1985: 73.1% pass (576 tests)1986: 71.0% pass (859 tests)1987: 71.5% pass (968 tests)1988: 70.9% pass (1,342 tests)1989: 68.0% pass (2,154 tests)1990: 72.1% pass (2,189 tests)1991: 67.8% pass (1,797 tests)1992: 70.1% pass (1,284 tests)1993: 70.1% pass (1,864 tests)1994: 69.3% pass (1,243 tests)1995: 71.3% pass (1,246 tests)1996: 70.0% pass (3,458 tests)1997: 70.5% pass (2,472 tests)1998: 67.2% pass (3,221 tests)1999: 70.4% pass (4,575 tests)2000: 70.6% pass (3,804 tests)2001: 73.0% pass (10,380 tests)2002: 73.1% pass (11,795 tests)2003: 70.9% pass (1,302 tests)2004: 73.3% pass (5,720 tests)2005: 72.7% pass (8,062 tests)2006: 74.1% pass (8,529 tests)2007: 75.2% pass (4,079 tests)2008: 77.2% pass (2,375 tests)197119922008

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.

HONDA CG125 FAQ

answers computed from the data above · terms in the glossary

Is the HONDA CG125 reliable?

The HONDA CG125 is about average for its class: 72.2% of its 89,345 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4566 of 5426 models.

What does a CG125 fail its MOT on most?

lighting and signalling — 32% of all defects recorded against failed CG125 tests.

What is the best year of CG125 to buy used?

By first-time pass rate, 1980-registered examples do best (79.1%) and 1978 worst (67.0%). Condition and history still trump the year.

How many miles will a CG125 last?

The median CG125 shows 17,460 miles at test, and examples around 50k miles still pass 65.8% of the time — mileage alone rarely kills one.