Data as of: DVSA MOT results to 2025
Royal Alloy GT 125I vs Honda PCX 125
The Royal Alloy GT 125I passes its MOT first time more often than the Honda PCX 125: 84.4% vs 81.1%, a 3.3-point lead.
MOT reliability, side by side
| Metric | Royal Alloy GT 125I | Honda PCX 125 |
|---|---|---|
| First-time pass rate | 84.4% | 81.1% |
| Outright fail rate | 10.6% | 12.9% |
| Vs comparable bikes (age & mileage adjusted) | +6.1 pts | +8.2 pts |
| Engine size | 125cc | 125cc |
| Rank among all models | #2639 of 5428 | #3358 of 5428 |
| Median miles at test | 2,625 | 16,405 |
| MOT tests analysed | 3,329 | 88,608 |
| Most common failure | lamps and reflectors | brakes |
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.
What fails, side by side
| Component | Royal Alloy GT 125I | Honda PCX 125 |
|---|---|---|
| Brakes | 2.7% | 6.7% |
| Steering & suspension | 4.7% | 4.4% |
| Lights & signalling | 4.3% | 3.9% |
| Tyres & wheels | 2.2% | 5.3% |
| Structure & body | 1.0% | 0.7% |
A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.
Pass rate by test year
| Test year | Royal Alloy GT 125I | Honda PCX 125 |
|---|---|---|
| 2021 | 82.5% | 80.3% |
| 2022 | 83.5% | 80.3% |
| 2023 | 82.4% | 80.2% |
| 2024 | 86.6% | 80.9% |
| 2025 | 85.6% | 81.6% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | Royal Alloy GT 125I | Honda PCX 125 |
|---|---|---|
| 0k-10k miles | 85.1% | 88.4% |
| 10k-20k miles | 71.6% | 79.3% |
Bands with fewer than 30 tests for either bike are left out.
Royal Alloy GT 125I vs Honda PCX 125 FAQ
Which is more reliable, the Royal Alloy GT 125I or the Honda PCX 125?
The Royal Alloy GT 125I passes its MOT first time more often than the Honda PCX 125: 84.4% vs 81.1%, a 3.3-point lead. Adjusted for age, mileage and test class, the Honda PCX 125 still comes out ahead: +6.1 points vs comparable bikes for the Royal Alloy GT 125I, +8.2 for the Honda PCX 125. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Royal Alloy GT 125I fail its MOT on most?
Steering & suspension: 4.7% of Royal Alloy GT 125I MOT tests failed on it, then lights & signalling (4.3%).
What does the Honda PCX 125 fail its MOT on most?
Brakes: 6.7% of Honda PCX 125 MOT tests failed on it, then tyres & wheels (5.3%).
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.