Data as of: DVSA MOT results to 2025
KTM Super Duke 990 vs Triumph Speed Triple
The KTM Super Duke 990 passes its MOT first time more often than the Triumph Speed Triple: 86.7% vs 85.6%, a 1.1-point lead.
MOT reliability, side by side
| Metric | KTM Super Duke 990 | Triumph Speed Triple |
|---|---|---|
| First-time pass rate | 86.7% | 85.6% |
| Outright fail rate | 6.0% | 7.3% |
| Vs comparable bikes (age & mileage adjusted) | +0.7 pts | -0.2 pts |
| Engine size | 999cc | 1,050cc |
| Rank among all models | #1985 of 5428 | #2333 of 5428 |
| Median miles at test | 12,261 | 12,419 |
| MOT tests analysed | 6,217 | 74,618 |
| 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 | KTM Super Duke 990 | Triumph Speed Triple |
|---|---|---|
| Lights & signalling | 2.8% | 3.2% |
| Brakes | 1.4% | 2.3% |
| Tyres & wheels | 1.3% | 1.6% |
| Steering & suspension | 1.0% | 1.6% |
| Structure & body | 0.5% | 0.7% |
| Fuel & exhaust | 0.3% | 0.3% |
| Drive system | 0.1% | 0.2% |
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 | KTM Super Duke 990 | Triumph Speed Triple |
|---|---|---|
| 2018 | 90.1% | 85.9% |
| 2019 | 87.1% | 85.7% |
| 2020 | 88.6% | 88.2% |
| 2021 | 88.7% | 86.6% |
| 2022 | 87.8% | 87.2% |
| 2023 | 86.2% | 87.3% |
| 2024 | 85.5% | 87.3% |
| 2025 | 90.4% | 87.7% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | KTM Super Duke 990 | Triumph Speed Triple |
|---|---|---|
| 0k-10k miles | 86.6% | 88.2% |
| 10k-20k miles | 86.8% | 85.5% |
| 20k-30k miles | 88.1% | 82.8% |
| 30k-40k miles | 86.1% | 80.4% |
| 40k-50k miles | 79.1% | 80.3% |
| 50k-60k miles | 80.0% | 79.6% |
Bands with fewer than 30 tests for either bike are left out.
KTM Super Duke 990 vs Triumph Speed Triple FAQ
Which is more reliable, the KTM Super Duke 990 or the Triumph Speed Triple?
The KTM Super Duke 990 passes its MOT first time more often than the Triumph Speed Triple: 86.7% vs 85.6%, a 1.1-point lead. Adjusted for age, mileage and test class the two are level (+0.7 vs -0.2 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 KTM Super Duke 990 fail its MOT on most?
Lights & signalling: 2.8% of KTM Super Duke 990 MOT tests failed on it, then brakes (1.4%).
What does the Triumph Speed Triple fail its MOT on most?
Lights & signalling: 3.2% of Triumph Speed Triple MOT tests failed on it, then brakes (2.3%).
Which holds up better at high mileage, the KTM Super Duke 990 or the Triumph Speed Triple?
They are level: at 50k-60k miles the KTM Super Duke 990 passes 80.0% first time and the Triumph Speed Triple 79.6%.
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.