Royal Alloy GP 300 S vs Piaggio PX 200 E

The Royal Alloy GP 300 S passes its MOT first time more often than the Piaggio PX 200 E: 92.4% vs 86.5%, a 5.9-point lead.

MOT reliability, side by side

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

Metric	Royal Alloy GP 300 S	Piaggio PX 200 E
First-time pass rate	92.4%	86.5%
Outright fail rate	5.0%	7.2%
Vs comparable bikes (age & mileage adjusted)	+3.1 pts	+12.9 pts
Engine size	278cc	198cc
Rank among all models	#405 of 5428	#2052 of 5428
Median miles at test	3,620	11,382
MOT tests analysed	799	28,415
Most common failure	steering	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.

"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

share of each bike's MOT tests that failed on the component · lower is better

Component	Royal Alloy GP 300 S	Piaggio PX 200 E
Lights & signalling	0.9%	4.3%
Steering & suspension	2.5%	1.7%
Tyres & wheels	1.3%	1.6%
Brakes	0.1%	1.5%
Structure & body	0.1%	0.3%
Fuel & exhaust	0%	0.3%

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

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Royal Alloy GP 300 S	Piaggio PX 200 E
2023	92.0%	89.5%
2024	93.0%	89.4%
2025	92.2%	89.6%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test

Mileage	Royal Alloy GP 300 S	Piaggio PX 200 E
0k-10k miles	92.5%	88.0%
10k-20k miles	93.0%	85.9%

Bands with fewer than 30 tests for either bike are left out.

Royal Alloy GP 300 S vs Piaggio PX 200 E FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Royal Alloy GP 300 S or the Piaggio PX 200 E?

The Royal Alloy GP 300 S passes its MOT first time more often than the Piaggio PX 200 E: 92.4% vs 86.5%, a 5.9-point lead. Adjusted for age, mileage and test class, the Piaggio PX 200 E still comes out ahead: +3.1 points vs comparable bikes for the Royal Alloy GP 300 S, +12.9 for the Piaggio PX 200 E. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Royal Alloy GP 300 S fail its MOT on most?

Steering & suspension: 2.5% of Royal Alloy GP 300 S MOT tests failed on it, then tyres & wheels (1.3%).

What does the Piaggio PX 200 E fail its MOT on most?

Lights & signalling: 4.3% of Piaggio PX 200 E MOT tests failed on it, then steering & suspension (1.7%).

ROYAL ALLOY GP 300 S 92.4% pass · 799 tests PIAGGIO PX 200 E 86.5% pass · 28.4k tests

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