SUZUKI GP125

123cc Petrol Class 1

#4478 of 5426 overall #612 of 680 SUZUKIs #284 of 734 commuter bikes

73.2%

first-time pass rate

16.4%

failed outright

17,291

median miles at test

803

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2017

The GP125's first-time pass rate has risen 9.4 points since 2006, 67.5% to 76.9%.

Pass rate by mileage

how the GP125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage GP125 passes first time 75.9% of the time; by 40k that's 80.0%.

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 GP125

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	176	46.8	2.4×
steering and suspension	70	18.6	2.0×
tyres and wheels	36	9.6	1.8×
lamps and reflectors	27	7.2	1.2×
brakes	27	7.2	0.6×
drive system	22	5.9	3.1×
reg plates and vin	6	1.6	1.3×
body and structure	6	1.6	1.6×
wheels	3	0.8	4.2×
fuel and exhaust	3	0.8	0.5×

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 GP125 beats 3 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 GP125.

Pass rate by registration year

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

Best year to buy used: 1985 (81.0% pass). Weakest: 1987 (70.0%).

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 GP125 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GP125 reliable?

The SUZUKI GP125 is about average for its class: 73.2% of its 803 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4478 of 5426 models.

What does a GP125 fail its MOT on most?

lighting and signalling — 47% of all defects recorded against failed GP125 tests.

What is the best year of GP125 to buy used?

By first-time pass rate, 1985-registered examples do best (81.0%) and 1987 worst (70.0%). Condition and history still trump the year.

How many miles will a GP125 last?

The median GP125 shows 17,291 miles at test, and examples around 40k miles still pass 80.0% of the time — mileage alone rarely kills one.