Adly Thunder Bike vs Honda CG125

The Honda CG125 passes its MOT first time more often than the Adly Thunder Bike: 72.2% vs 68.8%, a 3.4-point lead.

MOT reliability, side by side

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

Metric	Adly Thunder Bike	Honda CG125
First-time pass rate	68.8%	72.2%
Outright fail rate	27.5%	16.8%
Vs comparable bikes (age & mileage adjusted)	-8.1 pts	+0.7 pts
Engine size	124cc	124cc
Median miles at test	3,384	17,460
MOT tests analysed	109	89,345
Most common failure	steering and suspension	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.

ADLY THUNDER BIKE 68.8% pass · 109 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.