SUZUKI GS125

124cc Petrol Class 1

#5077 of 5426 overall #673 of 680 SUZUKIs #551 of 734 commuter bikes

63.6%

first-time pass rate

24.9%

failed outright

21,020

median miles at test

4,511

MOT tests, 2005–2025

Pass rate over time

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

The GS125's first-time pass rate has fallen 2.8 points since 2005, 62.8% to 60.0%.

Pass rate by mileage

how the GS125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage GS125 passes first time 71.7% of the time; by 50k that's 59.3%.

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 GS125

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	1,100	29.6	3.4×
steering and suspension	763	20.5	3.4×
brakes	568	15.3	2.1×
drive system	409	11	8.1×
tyres and wheels	276	7.4	2.6×
body and structure	225	6	7.8×
lamps and reflectors	129	3.5	0.9×
fuel and exhaust	119	3.2	3.2×
structure and attachments	81	2.2	1.7×
driving controls	50	1.3	4.6×

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 GS125 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 GS125.

Pass rate by registration year

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

Best year to buy used: 1998 (71.1% pass). Weakest: 2003 (52.8%).

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 GS125 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GS125 reliable?

The SUZUKI GS125 is less reliable than average for its class: 63.6% of its 4,511 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5077 of 5426 models.

What does a GS125 fail its MOT on most?

lighting and signalling — 30% of all defects recorded against failed GS125 tests.

What is the best year of GS125 to buy used?

By first-time pass rate, 1998-registered examples do best (71.1%) and 2003 worst (52.8%). Condition and history still trump the year.

How many miles will a GS125 last?

The median GS125 shows 21,020 miles at test, and examples around 50k miles still pass 59.3% of the time — mileage alone rarely kills one.