Data as of: DVSA MOT results to 2025
Triumph Daytona vs Yamaha YZF-R1
The Yamaha YZF-R1 passes its MOT first time more often than the Triumph Daytona: 84.1% vs 83.6%, a 0.5-point lead.
MOT reliability, side by side
| Metric | Triumph Daytona | Yamaha YZF-R1 |
|---|---|---|
| First-time pass rate | 83.6% | 84.1% |
| Outright fail rate | 9.4% | 7.8% |
| Vs comparable bikes (age & mileage adjusted) | -1.2 pts | -0.5 pts |
| Engine size | 955cc | 998cc |
| Rank among all models | #2835 of 5428 | #2721 of 5428 |
| Median miles at test | 15,798 | 16,705 |
| MOT tests analysed | 113,145 | 231,553 |
| Most common failure | lighting and signalling | 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 | Triumph Daytona | Yamaha YZF-R1 |
|---|---|---|
| Lights & signalling | 4.1% | 4.3% |
| Brakes | 3.1% | 1.7% |
| Steering & suspension | 2.7% | 1.4% |
| Tyres & wheels | 2.0% | 1.9% |
| Structure & body | 0.7% | 0.6% |
| Fuel & exhaust | 0.6% | 0.5% |
| Drive system | 0.5% | 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
| Test year | Triumph Daytona | Yamaha YZF-R1 |
|---|---|---|
| 2018 | 84.2% | 85.1% |
| 2019 | 85.1% | 85.6% |
| 2020 | 85.6% | 86.7% |
| 2021 | 84.6% | 85.8% |
| 2022 | 85.9% | 86.4% |
| 2023 | 84.9% | 87.2% |
| 2024 | 84.7% | 88.2% |
| 2025 | 85.9% | 87.9% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | Triumph Daytona | Yamaha YZF-R1 |
|---|---|---|
| 0k-10k miles | 88.3% | 87.8% |
| 10k-20k miles | 83.8% | 84.7% |
| 20k-30k miles | 80.9% | 82.4% |
| 30k-40k miles | 79.4% | 80.2% |
| 40k-50k miles | 78.6% | 78.8% |
| 50k-60k miles | 77.7% | 78.1% |
Bands with fewer than 30 tests for either bike are left out.
Triumph Daytona vs Yamaha YZF-R1 FAQ
Which is more reliable, the Triumph Daytona or the Yamaha YZF-R1?
The Yamaha YZF-R1 passes its MOT first time more often than the Triumph Daytona: 84.1% vs 83.6%, a 0.5-point lead. Adjusted for age, mileage and test class the two are level (-1.2 vs -0.5 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 Triumph Daytona fail its MOT on most?
Lights & signalling: 4.1% of Triumph Daytona MOT tests failed on it, then brakes (3.1%).
What does the Yamaha YZF-R1 fail its MOT on most?
Lights & signalling: 4.3% of Yamaha YZF-R1 MOT tests failed on it, then tyres & wheels (1.9%).
Which holds up better at high mileage, the Triumph Daytona or the Yamaha YZF-R1?
They are level: at 50k-60k miles the Triumph Daytona passes 77.7% first time and the Yamaha YZF-R1 78.1%.
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.