SUZUKI GZ 125 K6

124cc Petrol Class 1

#4748 of 5426 overall #646 of 680 SUZUKIs #385 of 734 commuter bikes

69.8%

first-time pass rate

19.8%

failed outright

9,652

median miles at test

3,463

MOT tests, 2005–2025

Pass rate over time

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

The GZ 125 K6's first-time pass rate has fallen 9.4 points since 2009, 73.6% to 64.2%.

Pass rate by mileage

how the GZ 125 K6's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage GZ 125 K6 passes first time 75.8% of the time; by 30k that's 64.6%.

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 GZ 125 K6

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	413	23.5	2.1×
lighting and signalling	349	19.9	1.8×
drive system	233	13.3	6.1×
steering and suspension	210	12	1.6×
tyres and wheels	157	8.9	1.8×
lamps and reflectors	148	8.4	1.9×
structure and attachments	112	6.4	3.0×
suspension	72	4.1	2.3×
tyres	39	2.2	1.5×
reg plates and vin	22	1.3	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 GZ 125 K6 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 GZ 125 K6.

Pass rate by registration year

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

Best year to buy used: 2007 (71.1% pass). Weakest: 2006 (69.4%).

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 GZ 125 K6 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GZ 125 K6 reliable?

The SUZUKI GZ 125 K6 is less reliable than average for its class: 69.8% of its 3,463 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4748 of 5426 models.

What does a GZ 125 K6 fail its MOT on most?

brakes — 24% of all defects recorded against failed GZ 125 K6 tests.

How many miles will a GZ 125 K6 last?

The median GZ 125 K6 shows 9,652 miles at test, and examples around 30k miles still pass 64.6% of the time — mileage alone rarely kills one.