ROYAL ALLOY GP 300 S
Pass rate over time
The GP 300 S's first-time pass rate has held steady since 2023 (92.0% → 92.2%).
What fails on a GP 300 S
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| steering |
|
14 | 28.6 | 4.2× |
| tyres |
|
9 | 18.4 | 1.6× |
| suspension |
|
8 | 16.3 | 1.2× |
| lamps and reflectors |
|
8 | 16.3 | 0.6× |
| Identification of the vehicle |
|
6 | 12.2 | 3.3× |
| wheels |
|
2 | 4.1 | 4.2× |
| structure and attachments |
|
1 | 2 | 0.2× |
| brakes |
|
1 | 2 | — |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.
How rivals compare
On first-time pass rate the GP 300 S beats 4 of its 4 closest rivals (PIAGGIO PX 200 E, PIAGGIO X9, LAMBRETTA GP200).
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 GP 300 S.
Pass rate by registration year
Best year to buy used: 2020 (92.9% pass). Weakest: 2021 (90.9%).
First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.
ROYAL ALLOY GP 300 S FAQ
Is the ROYAL ALLOY GP 300 S reliable?
The ROYAL ALLOY GP 300 S is more reliable than average for its class: 92.4% of its 799 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #405 of 5426 models.
What does a GP 300 S fail its MOT on most?
steering — 29% of all defects recorded against failed GP 300 S tests.