Znen ZN 125 T-K vs Yamaha YBR 125

The Znen ZN 125 T-K passes its MOT first time more often than the Yamaha YBR 125: 75.7% vs 71.0%, a 4.7-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025

Metric	Znen ZN 125 T-K	Yamaha YBR 125
First-time pass rate	75.7%	71.0%
Outright fail rate	14.0%	17.1%
Vs comparable bikes (age & mileage adjusted)	-0.5 pts	-1.1 pts
Engine size	124cc	124cc
Median miles at test	3,752	10,652
MOT tests analysed	107	124,897
Most common failure	brakes	brakes

First-time outcomes on normal tests, 2005–2025. "Most common failure" is the component group with the most recorded defects on failed tests. Read pass rates against test counts: a smaller sample is noisier. Source: DVSA anonymised MOT results.

"Vs comparable bikes" is the first-time pass rate minus the rate expected for each bike's own mix of age, mileage and test class, in percentage points: positive means better than comparable bikes. How this works.

ZNEN ZN 125 T-K 75.7% pass · 107 tests YAMAHA YBR 125 71.0% pass · 125k tests

See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.