Data as of: DVSA MOT results to 2025
Piaggio Vespa S 50 vs Peugeot Speedfight
The Piaggio Vespa S 50 passes its MOT first time more often than the Peugeot Speedfight: 80.9% vs 65.2%, a 15.7-point lead.
MOT reliability, side by side
| Metric | Piaggio Vespa S 50 | Peugeot Speedfight |
|---|---|---|
| First-time pass rate | 80.9% | 65.2% |
| Outright fail rate | 13.3% | 26.3% |
| Vs comparable bikes (age & mileage adjusted) | +7.9 pts | -5.3 pts |
| Engine size | 49cc | 49cc |
| Rank among all models | #3398 of 5428 | #5008 of 5428 |
| Median miles at test | 7,872 | 13,547 |
| MOT tests analysed | 1,917 | 83,728 |
| Most common failure | brakes | 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
| Component | Piaggio Vespa S 50 | Peugeot Speedfight |
|---|---|---|
| Lights & signalling | 6.5% | 15.4% |
| Steering & suspension | 3.4% | 12.9% |
| Brakes | 3.7% | 10.8% |
| Tyres & wheels | 2.9% | 4.7% |
| Fuel & exhaust | 1.5% | 2.5% |
| Structure & body | 1.7% | 2.3% |
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
| Test year | Piaggio Vespa S 50 | Peugeot Speedfight |
|---|---|---|
| 2018 | 82.1% | 69.6% |
| 2019 | 77.4% | 68.9% |
| 2020 | 82.2% | 72.0% |
| 2021 | 85.6% | 71.0% |
| 2022 | 84.7% | 71.7% |
| 2023 | 82.9% | 71.0% |
| 2024 | 81.7% | 72.9% |
| 2025 | 86.8% | 74.0% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | Piaggio Vespa S 50 | Peugeot Speedfight |
|---|---|---|
| 0k-10k miles | 83.8% | 73.1% |
| 10k-20k miles | 77.3% | 63.3% |
| 20k-30k miles | 75.0% | 58.2% |
| 30k-40k miles | 73.9% | 56.6% |
Bands with fewer than 30 tests for either bike are left out.
Piaggio Vespa S 50 vs Peugeot Speedfight FAQ
Which is more reliable, the Piaggio Vespa S 50 or the Peugeot Speedfight?
The Piaggio Vespa S 50 passes its MOT first time more often than the Peugeot Speedfight: 80.9% vs 65.2%, a 15.7-point lead. Adjusted for age, mileage and test class, the Piaggio Vespa S 50 still comes out ahead: +7.9 points vs comparable bikes for the Piaggio Vespa S 50, -5.3 for the Peugeot Speedfight. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Piaggio Vespa S 50 fail its MOT on most?
Lights & signalling: 6.5% of Piaggio Vespa S 50 MOT tests failed on it, then brakes (3.7%).
What does the Peugeot Speedfight fail its MOT on most?
Lights & signalling: 15.4% of Peugeot Speedfight MOT tests failed on it, then steering & suspension (12.9%).
Which holds up better at high mileage, the Piaggio Vespa S 50 or the Peugeot Speedfight?
At 30k-40k miles the Piaggio Vespa S 50 passes first time more often: 73.9% for the Piaggio Vespa S 50 vs 56.6% for the Peugeot Speedfight.
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.