SUZUKI GS125ES

124cc Petrol Class 1

#5047 of 5426 overall #670 of 680 SUZUKIs #537 of 734 commuter bikes

64.2%

first-time pass rate

24.3%

failed outright

19,559

median miles at test

3,142

MOT tests, 2005–2025

Pass rate over time

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

The GS125ES's first-time pass rate has risen 2.2 points since 2005, 68.9% to 71.1%.

Pass rate by mileage

how the GS125ES's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage GS125ES passes first time 73.9% of the time; by 50k that's 60.0%.

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 GS125ES

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	698	29.9	3.1×
steering and suspension	434	18.6	3.1×
brakes	387	16.6	2.1×
drive system	254	10.9	7.4×
tyres and wheels	175	7.5	2.5×
body and structure	111	4.8	5.8×
lamps and reflectors	101	4.3	1.2×
fuel and exhaust	77	3.3	2.6×
structure and attachments	61	2.6	1.9×
suspension	37	1.6	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 GS125ES 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 GS125ES.

Pass rate by registration year

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

Best year to buy used: 1989 (78.1% pass). Weakest: 1997 (53.3%).

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 GS125ES FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GS125ES reliable?

The SUZUKI GS125ES is less reliable than average for its class: 64.2% of its 3,142 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5047 of 5426 models.

What does a GS125ES fail its MOT on most?

lighting and signalling — 30% of all defects recorded against failed GS125ES tests.

What is the best year of GS125ES to buy used?

By first-time pass rate, 1989-registered examples do best (78.1%) and 1997 worst (53.3%). Condition and history still trump the year.

How many miles will a GS125ES last?

The median GS125ES shows 19,559 miles at test, and examples around 50k miles still pass 60.0% of the time — mileage alone rarely kills one.