Rieju Tango vs Honda CG125

The Honda CG125 passes its MOT first time more often than the Rieju Tango: 72.2% vs 71.1%, a 1.1-point lead.

MOT reliability, side by side

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

Metric	Rieju Tango	Honda CG125
First-time pass rate	71.1%	72.2%
Outright fail rate	18.2%	16.8%
Vs comparable bikes (age & mileage adjusted)	-9.8 pts	+0.7 pts
Engine size	124cc	124cc
Rank among all models	#4652 of 5428	#4568 of 5428
Median miles at test	3,032	17,460
MOT tests analysed	412	89,345
Most common failure	lamps and reflectors	lighting and signalling

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.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Rieju Tango	Honda CG125
2018	69.2%	72.6%
2019	76.5%	71.8%
2020	69.2%	73.6%
2021	62.7%	73.9%
2022	77.3%	73.5%
2023	78.7%	74.4%
2025	76.7%	76.4%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

RIEJU TANGO 71.1% pass · 412 tests HONDA CG125 72.2% pass · 89.3k tests

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