TGB 303

124cc Petrol Class 1

#4469 of 5426 overall #5 of 13 TGBs #280 of 734 commuter bikes

73.3%

first-time pass rate

20.5%

failed outright

4,724

median miles at test

307

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2017–2022

The 303's first-time pass rate has fallen 2.0 points since 2017, 71.4% to 69.4%.

What fails on a 303

failure defects by component group · advisories excluded

Component group	Defects	% of defects
brakes	45	28.8
lamps and reflectors	28	17.9
lighting and signalling	16	10.3
suspension	15	9.6
steering and suspension	14	9
tyres	12	7.7
tyres and wheels	7	4.5
steering	7	4.5
structure and attachments	7	4.5
fuel and exhaust	5	3.2

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 303 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 303.

Pass rate by registration year

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

Best year to buy used: 2015 (83.1% pass). Weakest: 2014 (65.0%).

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.