Data as of: DVSA MOT results to 2025
Triumph Street Triple vs Honda CB500
The Triumph Street Triple passes its MOT first time more often than the Honda CB500: 87.7% vs 83.3%, a 4.4-point lead.
MOT reliability, side by side
| Metric | Triumph Street Triple | Honda CB500 |
|---|---|---|
| First-time pass rate | 87.7% | 83.3% |
| Outright fail rate | 5.9% | 10.1% |
| Vs comparable bikes (age & mileage adjusted) | +1.3 pts | -0.8 pts |
| Engine size | 675cc | 499cc |
| Rank among all models | #1695 of 5428 | #2895 of 5428 |
| Median miles at test | 11,189 | 20,653 |
| MOT tests analysed | 37,699 | 104,748 |
| 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
| Component | Triumph Street Triple | Honda CB500 |
|---|---|---|
| Lights & signalling | 2.6% | 3.4% |
| Brakes | 1.6% | 4.2% |
| Steering & suspension | 1.2% | 4.2% |
| Tyres & wheels | 1.2% | 2.3% |
| Structure & body | 0.7% | 1.1% |
| Drive system | 0.2% | 1.0% |
| Fuel & exhaust | 0.1% | 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 Street Triple | Honda CB500 |
|---|---|---|
| 2018 | 87.8% | 84.0% |
| 2019 | 87.9% | 85.7% |
| 2020 | 89.6% | 89.1% |
| 2021 | 87.2% | 89.0% |
| 2022 | 87.3% | 89.1% |
| 2023 | 87.5% | 89.5% |
| 2024 | 88.0% | 90.1% |
| 2025 | 86.4% | 90.3% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | Triumph Street Triple | Honda CB500 |
|---|---|---|
| 0k-10k miles | 91.3% | 92.5% |
| 10k-20k miles | 86.7% | 86.3% |
| 20k-30k miles | 82.7% | 80.5% |
| 30k-40k miles | 79.9% | 77.6% |
| 40k-50k miles | 74.6% | 74.9% |
| 50k-60k miles | 75.6% | 74.6% |
Bands with fewer than 30 tests for either bike are left out.
Triumph Street Triple vs Honda CB500 FAQ
Which is more reliable, the Triumph Street Triple or the Honda CB500?
The Triumph Street Triple passes its MOT first time more often than the Honda CB500: 87.7% vs 83.3%, a 4.4-point lead. Adjusted for age, mileage and test class, the Triumph Street Triple still comes out ahead: +1.3 points vs comparable bikes for the Triumph Street Triple, -0.8 for the Honda CB500. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Triumph Street Triple fail its MOT on most?
Lights & signalling: 2.6% of Triumph Street Triple MOT tests failed on it, then brakes (1.6%).
What does the Honda CB500 fail its MOT on most?
Brakes: 4.2% of Honda CB500 MOT tests failed on it, then steering & suspension (4.2%).
Which holds up better at high mileage, the Triumph Street Triple or the Honda CB500?
At 50k-60k miles the Triumph Street Triple passes first time more often: 75.6% for the Triumph Street Triple vs 74.6% for the Honda CB500.
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.