Piaggio Vespa GTS 300 Supersport Abs vs Honda Forza 300/350

The Piaggio Vespa GTS 300 Supersport Abs passes its MOT first time more often than the Honda Forza 300/350: 96.0% vs 89.6%, a 6.4-point lead.

MOT reliability, side by side

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

Metric	Piaggio Vespa GTS 300 Supersport Abs	Honda Forza 300/350
First-time pass rate	96.0%	89.6%
Outright fail rate	2.4%	7.3%
Vs comparable bikes (age & mileage adjusted)	+6.6 pts	+2.6 pts
Engine size	278cc	279cc
Rank among all models	#26 of 5428	#1077 of 5428
Median miles at test	3,316	9,648
MOT tests analysed	500	10,821
Most common failure	brakes	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

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

Component	Piaggio Vespa GTS 300 Supersport Abs	Honda Forza 300/350
Brakes	0.8%	3.4%
Tyres & wheels	0.6%	2.6%
Steering & suspension	0.6%	1.8%
Lights & signalling	0.4%	1.7%
Structure & body	0%	0.4%

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	Piaggio Vespa GTS 300 Supersport Abs	Honda Forza 300/350
2023	91.2%	89.2%
2024	95.5%	90.2%
2025	97.9%	91.8%

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	Piaggio Vespa GTS 300 Supersport Abs	Honda Forza 300/350
0k-10k miles	97.1%	94.2%
10k-20k miles	90.2%	87.6%

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

Piaggio Vespa GTS 300 Supersport Abs vs Honda Forza 300/350 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Piaggio Vespa GTS 300 Supersport Abs or the Honda Forza 300/350?

The Piaggio Vespa GTS 300 Supersport Abs passes its MOT first time more often than the Honda Forza 300/350: 96.0% vs 89.6%, a 6.4-point lead. Adjusted for age, mileage and test class, the Piaggio Vespa GTS 300 Supersport Abs still comes out ahead: +6.6 points vs comparable bikes for the Piaggio Vespa GTS 300 Supersport Abs, +2.6 for the Honda Forza 300/350. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Piaggio Vespa GTS 300 Supersport Abs fail its MOT on most?

Brakes: 0.8% of Piaggio Vespa GTS 300 Supersport Abs MOT tests failed on it, then tyres & wheels (0.6%).

What does the Honda Forza 300/350 fail its MOT on most?

Brakes: 3.4% of Honda Forza 300/350 MOT tests failed on it, then tyres & wheels (2.6%).

PIAGGIO VESPA GTS 300 SUPERSPORT ABS 96.0% pass · 500 tests HONDA Forza 300/350 89.6% pass · 10.8k tests

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