Data as of: DVSA MOT results to 2025
Pgo T-Rex vs Gilera Runner
The Pgo T-Rex passes its MOT first time more often than the Gilera Runner: 76.5% vs 70.8%, a 5.7-point lead.
MOT reliability, side by side
| Metric | Pgo T-Rex | Gilera Runner |
|---|---|---|
| First-time pass rate | 76.5% | 70.8% |
| Outright fail rate | 16.7% | 21.5% |
| Vs comparable bikes (age & mileage adjusted) | +5.7 pts | -0.7 pts |
| Engine size | 124cc | 124cc |
| Rank among all models | #4125 of 5428 | #4675 of 5428 |
| Median miles at test | 12,691 | 11,381 |
| MOT tests analysed | 1,219 | 69,850 |
| 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 | Pgo T-Rex | Gilera Runner |
|---|---|---|
| Lights & signalling | 8.5% | 12.3% |
| Steering & suspension | 3.5% | 10.6% |
| Brakes | 6.8% | 7.2% |
| Tyres & wheels | 5.7% | 5.1% |
| Fuel & exhaust | 1.9% | 2.6% |
| Structure & body | 1.0% | 2.0% |
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 | Pgo T-Rex | Gilera Runner |
|---|---|---|
| 2012 | 75.5% | 69.5% |
| 2013 | 79.4% | 69.5% |
| 2014 | 75.0% | 70.6% |
| 2015 | 77.8% | 72.1% |
| 2016 | 69.1% | 73.3% |
| 2017 | 76.6% | 76.1% |
| 2018 | 78.9% | 77.2% |
| 2019 | 70.0% | 77.0% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | Pgo T-Rex | Gilera Runner |
|---|---|---|
| 0k-10k miles | 85.9% | 76.2% |
| 10k-20k miles | 72.3% | 67.5% |
| 20k-30k miles | 69.0% | 65.4% |
| 30k-40k miles | 67.9% | 67.2% |
Bands with fewer than 30 tests for either bike are left out.
Pgo T-Rex vs Gilera Runner FAQ
Which is more reliable, the Pgo T-Rex or the Gilera Runner?
The Pgo T-Rex passes its MOT first time more often than the Gilera Runner: 76.5% vs 70.8%, a 5.7-point lead. Adjusted for age, mileage and test class, the Pgo T-Rex still comes out ahead: +5.7 points vs comparable bikes for the Pgo T-Rex, -0.7 for the Gilera Runner. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Pgo T-Rex fail its MOT on most?
Lights & signalling: 8.5% of Pgo T-Rex MOT tests failed on it, then brakes (6.8%).
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%).
Which holds up better at high mileage, the Pgo T-Rex or the Gilera Runner?
They are level: at 30k-40k miles the Pgo T-Rex passes 67.9% first time and the Gilera Runner 67.2%.
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.