BAOTIAN BT 125 T-21

125cc Petrol Class 1

#4923 of 5426 overall #5 of 17 BAOTIANs #479 of 734 commuter bikes

66.7%

first-time pass rate

27.3%

failed outright

5,986

median miles at test

888

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2014–2023

The BT 125 T-21's first-time pass rate has risen 7.3 points since 2014, 66.0% to 73.3%.

What fails on a BT 125 T-21

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	155	26.8	2.5×
brakes	102	17.6	2.0×
steering and suspension	95	16.4	2.3×
lamps and reflectors	70	12.1	2.9×
tyres and wheels	60	10.4	3.0×
suspension	32	5.5	4.0×
tyres	31	5.4	4.5×
structure and attachments	17	2.9	2.3×
fuel and exhaust	9	1.6	1.2×
body and structure	7	1.2	1.6×

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 BT 125 T-21 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 BT 125 T-21.

Pass rate by registration year

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

Best year to buy used: 2012 (68.4% pass). Weakest: 2011 (63.2%).

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.

BAOTIAN BT 125 T-21 FAQ

answers computed from the data above · terms in the glossary

Is the BAOTIAN BT 125 T-21 reliable?

The BAOTIAN BT 125 T-21 is less reliable than average for its class: 66.7% of its 888 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4923 of 5426 models.

What does a BT 125 T-21 fail its MOT on most?

lighting and signalling — 27% of all defects recorded against failed BT 125 T-21 tests.

What is the best year of BT 125 T-21 to buy used?

By first-time pass rate, 2012-registered examples do best (68.4%) and 2011 worst (63.2%). Condition and history still trump the year.