TGB 204

124cc Petrol Class 1

#4265 of 5426 overall #1 of 13 TGBs #223 of 734 commuter bikes

75.3%

first-time pass rate

15.9%

failed outright

11,546

median miles at test

465

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2008–2014

The 204's first-time pass rate has fallen 19.2 points since 2008, 83.9% to 64.7%.

Pass rate by mileage

how the 204's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage 204 passes first time 81.7% of the time; by 20k that's 71.4%.

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 204

failure defects by component group · advisories excluded

Component group	Defects	% of defects
brakes	60	28
lighting and signalling	55	25.7
steering and suspension	38	17.8
tyres and wheels	28	13.1
fuel and exhaust	20	9.3
lamps and reflectors	4	1.9
body and structure	3	1.4
driving controls	2	0.9
structure and attachments	2	0.9
tyres	2	0.9

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 204 beats 4 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 204.

Pass rate by registration year

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

Best year to buy used: 2003 (82.1% pass). Weakest: 2006 (69.6%).

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.