BIKERELIABILITY Reg check
League table/ Honda SH 125 AD2-N/vs Gilera Runner
Head-to-head · 2005–2025

Data as of: DVSA MOT results to 2025

Honda SH 125 AD2-N vs Gilera Runner

The Honda SH 125 AD2-N passes its MOT first time more often than the Gilera Runner: 88.1% vs 70.8%, a 17.3-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Honda SH 125 AD2-N Gilera Runner
First-time pass rate 88.1% 70.8%
Outright fail rate 8.3% 21.5%
Vs comparable bikes (age & mileage adjusted) +13.9 pts -0.7 pts
Engine size 125cc 124cc
Rank among all models #1574 of 5428 #4675 of 5428
Median miles at test 26,849 11,381
MOT tests analysed 666 69,850
Most common failure brakes 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

share of each bike's MOT tests that failed on the component · lower is better
Component Honda SH 125 AD2-N Gilera Runner
Lights & signalling 3.8% 12.3%
Steering & suspension 2.6% 10.6%
Brakes 3.5% 7.2%
Tyres & wheels 2.6% 5.1%
Fuel & exhaust 0% 2.6%
Structure & body 0.3% 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

first-time MOT pass rate in each calendar year both bikes were tested
Test year Honda SH 125 AD2-N Gilera Runner
2023 89.4% 81.3%
2024 85.5% 84.0%
2025 88.3% 85.5%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test
Mileage Honda SH 125 AD2-N Gilera Runner
0k-10k miles 93.1% 76.2%
10k-20k miles 87.0% 67.5%
20k-30k miles 87.1% 65.4%
30k-40k miles 85.3% 67.2%
40k-50k miles 87.3% 68.1%
50k-60k miles 85.7% 67.8%

Bands with fewer than 30 tests for either bike are left out.

Honda SH 125 AD2-N vs Gilera Runner FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Honda SH 125 AD2-N or the Gilera Runner?

The Honda SH 125 AD2-N passes its MOT first time more often than the Gilera Runner: 88.1% vs 70.8%, a 17.3-point lead. Adjusted for age, mileage and test class, the Honda SH 125 AD2-N still comes out ahead: +13.9 points vs comparable bikes for the Honda SH 125 AD2-N, -0.7 for the Gilera Runner. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Honda SH 125 AD2-N fail its MOT on most?

Lights & signalling: 3.8% of Honda SH 125 AD2-N MOT tests failed on it, then brakes (3.5%).

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 Honda SH 125 AD2-N or the Gilera Runner?

At 50k-60k miles the Honda SH 125 AD2-N passes first time more often: 85.7% for the Honda SH 125 AD2-N vs 67.8% for the Gilera Runner.

See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.