KTM 125 vs Gilera Runner

The KTM 125 passes its MOT first time more often than the Gilera Runner: 71.0% vs 70.8%, a 0.2-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025

Metric	KTM 125	Gilera Runner
First-time pass rate	71.0%	70.8%
Outright fail rate	18.9%	21.5%
Vs comparable bikes (age & mileage adjusted)	-1.7 pts	-0.7 pts
Engine size	125cc	124cc
Rank among all models	#4664 of 5428	#4675 of 5428
Median miles at test	9,806	11,381
MOT tests analysed	9,690	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

share of each bike's MOT tests that failed on the component · lower is better

Component	KTM 125	Gilera Runner
Lights & signalling	10.8%	12.3%
Steering & suspension	7.2%	10.6%
Brakes	6.6%	7.2%
Tyres & wheels	3.7%	5.1%
Structure & body	6.0%	2.0%
Fuel & exhaust	0.2%	2.6%
Drive system	0.8%	0.0%

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	KTM 125	Gilera Runner
2018	73.4%	77.2%
2019	72.8%	77.0%
2020	74.4%	75.8%
2021	70.9%	79.1%
2022	69.7%	80.5%
2023	70.2%	81.3%
2024	66.5%	84.0%
2025	73.1%	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	KTM 125	Gilera Runner
0k-10k miles	76.1%	76.2%
10k-20k miles	66.6%	67.5%
20k-30k miles	62.2%	65.4%
30k-40k miles	60.2%	67.2%
40k-50k miles	66.7%	68.1%

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

KTM 125 vs Gilera Runner FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the KTM 125 or the Gilera Runner?

The KTM 125 passes its MOT first time more often than the Gilera Runner: 71.0% vs 70.8%, a 0.2-point lead. Adjusted for age, mileage and test class, the Gilera Runner still comes out ahead: -1.7 points vs comparable bikes for the KTM 125, -0.7 for the Gilera Runner. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the KTM 125 fail its MOT on most?

Lights & signalling: 10.8% of KTM 125 MOT tests failed on it, then steering & suspension (7.2%).

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%).

Which holds up better at high mileage, the KTM 125 or the Gilera Runner?

At 40k-50k miles the Gilera Runner passes first time more often: 66.7% for the KTM 125 vs 68.1% for the Gilera Runner.

KTM 125 71.0% pass · 9,690 tests GILERA RUNNER 70.8% pass · 69.9k tests

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