Data as of: DVSA MOT results to 2025
Keeway TX 125 E4 vs Gilera Runner
The Gilera Runner passes its MOT first time more often than the Keeway TX 125 E4: 70.8% vs 62.9%, a 7.9-point lead.
MOT reliability, side by side
| Metric | Keeway TX 125 E4 | Gilera Runner |
|---|---|---|
| First-time pass rate | 62.9% | 70.8% |
| Outright fail rate | 25.4% | 21.5% |
| Vs comparable bikes (age & mileage adjusted) | -11.7 pts | -0.7 pts |
| Engine size | 125cc | 124cc |
| Rank among all models | #5116 of 5428 | #4675 of 5428 |
| Median miles at test | 6,144 | 11,381 |
| MOT tests analysed | 547 | 69,850 |
| Most common failure | lamps and reflectors | 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 | Keeway TX 125 E4 | Gilera Runner |
|---|---|---|
| Lights & signalling | 17.0% | 12.3% |
| Steering & suspension | 9.7% | 10.6% |
| Brakes | 7.9% | 7.2% |
| Structure & body | 10.2% | 2.0% |
| Tyres & wheels | 2.4% | 5.1% |
| Fuel & exhaust | 0% | 2.6% |
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 | Keeway TX 125 E4 | Gilera Runner |
|---|---|---|
| 2021 | 68.1% | 79.1% |
| 2022 | 67.7% | 80.5% |
| 2023 | 58.8% | 81.3% |
| 2024 | 61.1% | 84.0% |
| 2025 | 61.9% | 85.5% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | Keeway TX 125 E4 | Gilera Runner |
|---|---|---|
| 0k-10k miles | 63.5% | 76.2% |
| 10k-20k miles | 61.7% | 67.5% |
Bands with fewer than 30 tests for either bike are left out.
Keeway TX 125 E4 vs Gilera Runner FAQ
Which is more reliable, the Keeway TX 125 E4 or the Gilera Runner?
The Gilera Runner passes its MOT first time more often than the Keeway TX 125 E4: 70.8% vs 62.9%, a 7.9-point lead. Adjusted for age, mileage and test class, the Gilera Runner still comes out ahead: -11.7 points vs comparable bikes for the Keeway TX 125 E4, -0.7 for the Gilera Runner. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Keeway TX 125 E4 fail its MOT on most?
Lights & signalling: 17.0% of Keeway TX 125 E4 MOT tests failed on it, then structure & body (10.2%).
What does the Gilera Runner fail its MOT on most?
Lights & signalling: 12.3% of Gilera Runner MOT tests failed on it, then steering & suspension (10.6%).
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.