Moto Roma Grandprix 100 vs Honda C90

The Honda C90 passes its MOT first time more often than the Moto Roma Grandprix 100 — 79.3% vs 66.7%, a 12.6-point lead.

MOT reliability, side by side

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

Metric	Moto Roma Grandprix 100	Honda C90
First-time pass rate	66.7%	79.3%
Outright fail rate	32.4%	12.6%
Median miles at test	5,550	17,744
MOT tests analysed	111	92,772
Most common failure	lighting and signalling	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.

MOTO ROMA GRANDPRIX 100 66.7% pass · 111 tests HONDA C90 79.3% pass · 92.8k tests

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