Data as of: DVSA MOT results to 2025
KTM 790 Duke 18 vs Aprilia Tuono
The Aprilia Tuono passes its MOT first time more often than the KTM 790 Duke 18: 88.4% vs 87.8%, a 0.6-point lead.
MOT reliability, side by side
| Metric | KTM 790 Duke 18 | Aprilia Tuono |
|---|---|---|
| First-time pass rate | 87.8% | 88.4% |
| Outright fail rate | 5.9% | 5.5% |
| Vs comparable bikes (age & mileage adjusted) | -0.4 pts | +2.3 pts |
| Engine size | 799cc | 998cc |
| Rank among all models | #1669 of 5428 | #1478 of 5428 |
| Median miles at test | 7,267 | 11,489 |
| MOT tests analysed | 2,425 | 34,724 |
| Most common failure | lamps and reflectors | 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 790 Duke 18 | Aprilia Tuono |
|---|---|---|
| Lights & signalling | 2.6% | 2.5% |
| Brakes | 2.5% | 1.5% |
| Tyres & wheels | 0.9% | 1.1% |
| Steering & suspension | 0.5% | 1.2% |
| Structure & body | 1.1% | 0.6% |
| Drive system | 0% | 0.3% |
| Fuel & exhaust | 0% | 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 790 Duke 18 | Aprilia Tuono |
|---|---|---|
| 2021 | 85.2% | 90.2% |
| 2022 | 87.0% | 89.9% |
| 2023 | 88.4% | 90.4% |
| 2024 | 88.7% | 91.3% |
| 2025 | 89.6% | 90.3% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | KTM 790 Duke 18 | Aprilia Tuono |
|---|---|---|
| 0k-10k miles | 88.3% | 90.7% |
| 10k-20k miles | 87.8% | 87.2% |
| 20k-30k miles | 82.2% | 86.2% |
Bands with fewer than 30 tests for either bike are left out.
KTM 790 Duke 18 vs Aprilia Tuono FAQ
Which is more reliable, the KTM 790 Duke 18 or the Aprilia Tuono?
The Aprilia Tuono passes its MOT first time more often than the KTM 790 Duke 18: 88.4% vs 87.8%, a 0.6-point lead. Adjusted for age, mileage and test class, the Aprilia Tuono still comes out ahead: -0.4 points vs comparable bikes for the KTM 790 Duke 18, +2.3 for the Aprilia Tuono. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the KTM 790 Duke 18 fail its MOT on most?
Lights & signalling: 2.6% of KTM 790 Duke 18 MOT tests failed on it, then brakes (2.5%).
What does the Aprilia Tuono fail its MOT on most?
Lights & signalling: 2.5% of Aprilia Tuono MOT tests failed on it, then brakes (1.5%).
Which holds up better at high mileage, the KTM 790 Duke 18 or the Aprilia Tuono?
At 20k-30k miles the Aprilia Tuono passes first time more often: 82.2% for the KTM 790 Duke 18 vs 86.2% for the Aprilia Tuono.
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.