SUKIDA SK 125 T-21 VIPER

124cc Petrol Class 1

63.4%

first-time pass rate

34.1%

failed outright

8,746

median miles at test

123

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2014–2015

The SK 125 T-21 VIPER's first-time pass rate has risen 6.0 points since 2014, 55.3% to 61.3%.

What fails on a SK 125 T-21 VIPER

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	60	31.9
steering and suspension	58	30.9
brakes	35	18.6
tyres and wheels	15	8
body and structure	8	4.3
fuel and exhaust	6	3.2
steering	2	1.1
Items Not Tested	2	1.1
driving controls	1	0.5
structure and attachments	1	0.5

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 SK 125 T-21 VIPER 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 SK 125 T-21 VIPER.

Pass rate by registration year

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

Best year to buy used: 2011 (68.7% pass). Weakest: 2011 (68.7%).

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.