YAMAHA TDR125

124cc Petrol Class 1

#4801 of 5426 overall #374 of 409 YAMAHAs #415 of 734 commuter bikes

68.9%

first-time pass rate

20.8%

failed outright

19,310

median miles at test

1,726

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2025

The TDR125's first-time pass rate has risen 26.3 points since 2006, 58.5% to 84.8%.

Pass rate by mileage

how the TDR125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage TDR125 passes first time 76.8% of the time; by 40k that's 62.7%.

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 TDR125

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	300	28.3	2.6×
steering and suspension	227	21.4	2.7×
brakes	190	17.9	1.9×
drive system	94	8.9	5.3×
lamps and reflectors	79	7.5	1.7×
tyres and wheels	62	5.8	1.4×
body and structure	36	3.4	3.4×
suspension	27	2.5	1.6×
fuel and exhaust	24	2.3	1.7×
structure and attachments	21	2	1.4×

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 TDR125 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 TDR125.

Pass rate by registration year

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

Best year to buy used: 1997 (76.5% pass). Weakest: 1992 (60.0%).

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.

YAMAHA TDR125 FAQ

answers computed from the data above · terms in the glossary

Is the YAMAHA TDR125 reliable?

The YAMAHA TDR125 is less reliable than average for its class: 68.9% of its 1,726 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4801 of 5426 models.

What does a TDR125 fail its MOT on most?

lighting and signalling — 28% of all defects recorded against failed TDR125 tests.

What is the best year of TDR125 to buy used?

By first-time pass rate, 1997-registered examples do best (76.5%) and 1992 worst (60.0%). Condition and history still trump the year.

How many miles will a TDR125 last?

The median TDR125 shows 19,310 miles at test, and examples around 40k miles still pass 62.7% of the time — mileage alone rarely kills one.