HYOSUNG GRANDPRIX

125cc Petrol Class 1

#4947 of 5426 overall #10 of 23 HYOSUNGs #488 of 734 commuter bikes

66.4%

first-time pass rate

24.2%

failed outright

10,484

median miles at test

363

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2010

The GRANDPRIX's first-time pass rate has risen 10.2 points since 2006, 60.8% to 71.0%.

Pass rate by mileage

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

A low-mileage GRANDPRIX passes first time 68.0% of the time; by 20k that's 62.3%.

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 GRANDPRIX

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	95	34.8
brakes	74	27.1
steering and suspension	46	16.8
tyres and wheels	40	14.7
fuel and exhaust	10	3.7
reg plates and vin	4	1.5
lamps and reflectors	1	0.4
drive system	1	0.4
structure and attachments	1	0.4
Items Not Tested	1	0.4

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the GRANDPRIX 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 GRANDPRIX.

Pass rate by registration year

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

Best year to buy used: 2004 (66.7% pass). Weakest: 2003 (59.0%).

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.