BIKERELIABILITY Reg check
Model report · 2005–2025

MOTO ROMA RDG 125

124cc Petrol Class 1
63.2%
first-time pass rate
23.2%
failed outright
8,912
median miles at test
125
MOT tests, 2005–2025
-8.5pp
vs expected · age & mileage

The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.

“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.

What fails on a RDG 125

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
40 34.5
brakes
20 17.2
drive system
18 15.5
steering and suspension
14 12.1
body and structure
8 6.9
tyres and wheels
7 6
lamps and reflectors
5 4.3
driving controls
2 1.7
steering
1 0.9
fuel and exhaust
1 0.9

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the RDG 125 beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

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 RDG 125.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the RDG 125

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