Data as of: DVSA MOT results to 2025
Royal Alloy GP 300 LC E5 vs Piaggio X9
The Royal Alloy GP 300 LC E5 passes its MOT first time more often than the Piaggio X9: 92.7% vs 77.0%, a 15.7-point lead.
MOT reliability, side by side
| Metric | Royal Alloy GP 300 LC E5 | Piaggio X9 |
|---|---|---|
| First-time pass rate | 92.7% | 77.0% |
| Outright fail rate | 4.9% | 17.5% |
| Vs comparable bikes (age & mileage adjusted) | +2.8 pts | -4.4 pts |
| Engine size | 278cc | 244cc |
| Rank among all models | #344 of 5428 | #4065 of 5428 |
| Median miles at test | 2,696 | 12,186 |
| MOT tests analysed | 246 | 21,703 |
| Most common failure | suspension | steering and suspension |
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.
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.