HYOSUNG GT125

124cc Petrol Class 1

#5254 of 5426 overall #18 of 23 HYOSUNGs #646 of 734 commuter bikes

58.6%

first-time pass rate

31.4%

failed outright

10,959

median miles at test

2,449

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2025

The GT125's first-time pass rate has fallen 1.9 points since 2006, 60.0% to 58.1%.

Pass rate by mileage

how the GT125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage GT125 passes first time 63.0% of the time; by 40k that's 54.5%.

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 GT125

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	646	25.2	3.9×
lighting and signalling	629	24.6	3.6×
steering and suspension	436	17	3.9×
drive system	237	9.3	9.7×
tyres and wheels	155	6.1	2.7×
lamps and reflectors	142	5.5	2.2×
structure and attachments	102	4	3.6×
body and structure	81	3.2	5.4×
fuel and exhaust	67	2.6	3.0×
suspension	66	2.6	2.5×

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 GT125 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 GT125.

Pass rate by registration year

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

Best year to buy used: 2011 (64.6% pass). Weakest: 2005 (44.9%).

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.

HYOSUNG GT125 FAQ

answers computed from the data above · terms in the glossary

Is the HYOSUNG GT125 reliable?

The HYOSUNG GT125 is less reliable than average for its class: 58.6% of its 2,449 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5254 of 5426 models.

What does a GT125 fail its MOT on most?

brakes — 25% of all defects recorded against failed GT125 tests.

What is the best year of GT125 to buy used?

By first-time pass rate, 2011-registered examples do best (64.6%) and 2005 worst (44.9%). Condition and history still trump the year.

How many miles will a GT125 last?

The median GT125 shows 10,959 miles at test, and examples around 40k miles still pass 54.5% of the time — mileage alone rarely kills one.