Data as of: DVSA MOT results to 2025
Moto Guzzi V50 vs Yamaha FZ6
The Yamaha FZ6 passes its MOT first time more often than the Moto Guzzi V50: 85.2% vs 84.0%, a 1.2-point lead.
MOT reliability, side by side
| Metric | Moto Guzzi V50 | Yamaha FZ6 |
|---|---|---|
| First-time pass rate | 84.0% | 85.2% |
| Outright fail rate | 8.0% | 7.8% |
| Vs comparable bikes (age & mileage adjusted) | +0.5 pts | +0.3 pts |
| Engine size | 490cc | 599cc |
| Rank among all models | #2748 of 5428 | #2445 of 5428 |
| Median miles at test | 31,921 | 15,484 |
| MOT tests analysed | 2,712 | 67,149 |
| Most common failure | lighting and signalling | 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 | Moto Guzzi V50 | Yamaha FZ6 |
|---|---|---|
| Lights & signalling | 4.2% | 3.1% |
| Brakes | 3.2% | 2.1% |
| Steering & suspension | 2.7% | 2.4% |
| Tyres & wheels | 1.4% | 2.3% |
| Structure & body | 0.6% | 0.6% |
| Fuel & exhaust | 0.7% | 0.1% |
| Drive system | 0% | 0.5% |
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 | Moto Guzzi V50 | Yamaha FZ6 |
|---|---|---|
| 2016 | 79.1% | 85.4% |
| 2017 | 81.8% | 85.8% |
| 2018 | 86.0% | 84.5% |
| 2019 | 94.8% | 83.4% |
| 2020 | 92.1% | 82.8% |
| 2021 | 86.4% | 82.9% |
| 2022 | 87.3% | 84.0% |
| 2023 | 91.1% | 82.6% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | Moto Guzzi V50 | Yamaha FZ6 |
|---|---|---|
| 0k-10k miles | 83.3% | 91.1% |
| 10k-20k miles | 83.5% | 86.1% |
| 20k-30k miles | 84.8% | 81.5% |
| 30k-40k miles | 83.4% | 78.7% |
| 40k-50k miles | 84.6% | 77.9% |
| 50k-60k miles | 84.6% | 77.0% |
Bands with fewer than 30 tests for either bike are left out.
Moto Guzzi V50 vs Yamaha FZ6 FAQ
Which is more reliable, the Moto Guzzi V50 or the Yamaha FZ6?
The Yamaha FZ6 passes its MOT first time more often than the Moto Guzzi V50: 85.2% vs 84.0%, a 1.2-point lead. Adjusted for age, mileage and test class the two are level (+0.5 vs +0.3 points against comparable bikes), so the raw gap is mostly down to how old and how used each fleet is. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Moto Guzzi V50 fail its MOT on most?
Lights & signalling: 4.2% of Moto Guzzi V50 MOT tests failed on it, then brakes (3.2%).
What does the Yamaha FZ6 fail its MOT on most?
Lights & signalling: 3.1% of Yamaha FZ6 MOT tests failed on it, then steering & suspension (2.4%).
Which holds up better at high mileage, the Moto Guzzi V50 or the Yamaha FZ6?
At 50k-60k miles the Moto Guzzi V50 passes first time more often: 84.6% for the Moto Guzzi V50 vs 77.0% for the Yamaha FZ6.
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.