SUZUKI GZ

124cc Petrol Class 1

#4450 of 5426 overall #608 of 680 SUZUKIs #275 of 734 commuter bikes

73.5%

first-time pass rate

18.2%

failed outright

7,732

median miles at test

554

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2013–2025

The GZ's first-time pass rate has risen 2.9 points since 2013, 60.0% to 62.9%.

Pass rate by mileage

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

A low-mileage GZ passes first time 77.5% of the time; by 20k that's 64.5%.

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

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	67	23.7	2.0×
lighting and signalling	52	18.4	1.4×
steering and suspension	30	10.6	1.5×
lamps and reflectors	28	9.9	2.4×
drive system	28	9.9	4.8×
suspension	23	8.1	4.2×
structure and attachments	22	7.8	3.7×
tyres and wheels	16	5.7	1.4×
tyres	9	3.2	1.8×
steering	8	2.8	2.6×

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 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 GZ.

Pass rate by registration year

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

Best year to buy used: 2009 (81.5% pass). Weakest: 2007 (72.2%).

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 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GZ reliable?

The SUZUKI GZ is about average for its class: 73.5% of its 554 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4450 of 5426 models.

What does a GZ fail its MOT on most?

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

What is the best year of GZ to buy used?

By first-time pass rate, 2009-registered examples do best (81.5%) and 2007 worst (72.2%). Condition and history still trump the year.

How many miles will a GZ last?

The median GZ shows 7,732 miles at test, and examples around 20k miles still pass 64.5% of the time — mileage alone rarely kills one.