SUZUKI GN125

124cc Petrol Class 1

#4638 of 5426 overall #636 of 680 SUZUKIs #331 of 734 commuter bikes

71.2%

first-time pass rate

17.8%

failed outright

14,224

median miles at test

15.6k

MOT tests, 2005–2025

Pass rate over time

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

The GN125's first-time pass rate has fallen 4.3 points since 2005, 76.3% to 72.0%.

Pass rate by mileage

how the GN125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage GN125 passes first time 78.2% of the time; by 50k that's 67.9%.

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 GN125

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	1,897	25.4	1.9×
steering and suspension	1,214	16.3	1.9×
brakes	1,098	14.7	1.2×
drive system	1,057	14.1	6.1×
tyres and wheels	650	8.7	1.8×
lamps and reflectors	588	7.9	1.4×
body and structure	326	4.4	3.4×
structure and attachments	308	4.1	2.0×
fuel and exhaust	201	2.7	1.5×
suspension	131	1.8	1.0×

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 GN125 beats 2 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 GN125.

Pass rate by registration year

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

Best year to buy used: 2015 (93.7% pass). Weakest: 1993 (62.4%).

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.

SUZUKI GN125 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GN125 reliable?

The SUZUKI GN125 is less reliable than average for its class: 71.2% of its 15,611 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4638 of 5426 models.

What does a GN125 fail its MOT on most?

lighting and signalling — 25% of all defects recorded against failed GN125 tests.

What is the best year of GN125 to buy used?

By first-time pass rate, 2015-registered examples do best (93.7%) and 1993 worst (62.4%). Condition and history still trump the year.

How many miles will a GN125 last?

The median GN125 shows 14,224 miles at test, and examples around 50k miles still pass 67.9% of the time — mileage alone rarely kills one.