SUPERBYKE SB 125

124cc Petrol Class 1

#5173 of 5426 overall #1 of 7 SUPERBYKEs #605 of 734 commuter bikes

61.2%

first-time pass rate

22.0%

failed outright

5,427

median miles at test

232

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2010–2011

The SB 125's first-time pass rate has risen 1.7 points since 2010, 51.6% to 53.3%.

What fails on a SB 125

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	67	35.3
brakes	42	22.1
steering and suspension	29	15.3
tyres and wheels	18	9.5
drive system	10	5.3
fuel and exhaust	7	3.7
structure and attachments	5	2.6
body and structure	5	2.6
lamps and reflectors	4	2.1
Items Not Tested	3	1.6

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 SB 125 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 SB 125.

Pass rate by registration year

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

Best year to buy used: 2007 (60.3% pass). Weakest: 2006 (59.5%).

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.