YAMAHA TEO S

124cc Petrol Class 1

#4265 of 5426 overall #319 of 409 YAMAHAs #223 of 734 commuter bikes

75.3%

first-time pass rate

18.0%

failed outright

8,430

median miles at test

1,565

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2017

The TEO S's first-time pass rate has fallen 13.6 points since 2005, 83.3% to 69.7%.

Pass rate by mileage

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

A low-mileage TEO S passes first time 80.1% of the time; by 30k that's 60.4%.

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 TEO S

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	182	27.6	2.0×
lighting and signalling	137	20.8	1.6×
steering and suspension	121	18.3	1.8×
tyres and wheels	120	18.2	3.3×
fuel and exhaust	62	9.4	4.0×
body and structure	20	3	2.4×
lamps and reflectors	6	0.9	0.2×
reg plates and vin	5	0.8	0.6×
suspension	4	0.6	0.1×
structure and attachments	3	0.5	0.2×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the TEO S 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 TEO S.

Pass rate by registration year

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

Best year to buy used: 2002 (78.7% pass). Weakest: 2001 (72.6%).

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.

YAMAHA TEO S FAQ

answers computed from the data above · terms in the glossary

Is the YAMAHA TEO S reliable?

The YAMAHA TEO S is about average for its class: 75.3% of its 1,565 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4265 of 5426 models.

What does a TEO S fail its MOT on most?

brakes — 28% of all defects recorded against failed TEO S tests.

What is the best year of TEO S to buy used?

By first-time pass rate, 2002-registered examples do best (78.7%) and 2001 worst (72.6%). Condition and history still trump the year.

How many miles will a TEO S last?

The median TEO S shows 8,430 miles at test, and examples around 30k miles still pass 60.4% of the time — mileage alone rarely kills one.