Sukida SK 125-4 Inspector vs Gilera Runner

The Gilera Runner passes its MOT first time more often than the Sukida SK 125-4 Inspector: 70.8% vs 66.4%, a 4.4-point lead.

MOT reliability, side by side

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

Metric	Sukida SK 125-4 Inspector	Gilera Runner
First-time pass rate	66.4%	70.8%
Outright fail rate	22.3%	21.5%
Vs comparable bikes (age & mileage adjusted)	-7.3 pts	-0.7 pts
Engine size	125cc	124cc
Rank among all models	#4949 of 5428	#4675 of 5428
Median miles at test	7,748	11,381
MOT tests analysed	737	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

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

Component	Sukida SK 125-4 Inspector	Gilera Runner
Lights & signalling	16.3%	12.3%
Steering & suspension	10.3%	10.6%
Brakes	7.1%	7.2%
Tyres & wheels	1.5%	5.1%
Structure & body	3.8%	2.0%
Drive system	5.3%	0.0%
Fuel & exhaust	1.5%	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

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Sukida SK 125-4 Inspector	Gilera Runner
2010	56.7%	67.9%
2011	63.1%	67.6%
2012	68.1%	69.5%
2013	60.7%	69.5%
2014	65.8%	70.6%
2015	63.6%	72.1%
2016	68.2%	73.3%
2017	70.3%	76.1%

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	Sukida SK 125-4 Inspector	Gilera Runner
0k-10k miles	70.4%	76.2%
10k-20k miles	59.6%	67.5%
20k-30k miles	60.4%	65.4%

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

Sukida SK 125-4 Inspector vs Gilera Runner FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Sukida SK 125-4 Inspector or the Gilera Runner?

The Gilera Runner passes its MOT first time more often than the Sukida SK 125-4 Inspector: 70.8% vs 66.4%, a 4.4-point lead. Adjusted for age, mileage and test class, the Gilera Runner still comes out ahead: -7.3 points vs comparable bikes for the Sukida SK 125-4 Inspector, -0.7 for the Gilera Runner. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Sukida SK 125-4 Inspector fail its MOT on most?

Lights & signalling: 16.3% of Sukida SK 125-4 Inspector MOT tests failed on it, then steering & suspension (10.3%).

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 Sukida SK 125-4 Inspector or the Gilera Runner?

At 20k-30k miles the Gilera Runner passes first time more often: 60.4% for the Sukida SK 125-4 Inspector vs 65.4% for the Gilera Runner.

SUKIDA SK 125-4 INSPECTOR 66.4% pass · 737 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.