Aprilia RS 125R Extrema vs Gilera Runner

The Gilera Runner passes its MOT first time more often than the Aprilia RS 125R Extrema: 70.8% vs 61.3%, a 9.5-point lead.

MOT reliability, side by side

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

Metric	Aprilia RS 125R Extrema	Gilera Runner
First-time pass rate	61.3%	70.8%
Outright fail rate	30.5%	21.5%
Vs comparable bikes (age & mileage adjusted)	-8.5 pts	-0.7 pts
Engine size	125cc	124cc
Rank among all models	#5171 of 5428	#4675 of 5428
Median miles at test	13,857	11,381
MOT tests analysed	767	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	Aprilia RS 125R Extrema	Gilera Runner
Lights & signalling	18.5%	12.3%
Steering & suspension	16.2%	10.6%
Brakes	12.4%	7.2%
Tyres & wheels	6.0%	5.1%
Drive system	6.5%	0.0%
Structure & body	4.2%	2.0%
Fuel & exhaust	3.4%	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	Aprilia RS 125R Extrema	Gilera Runner
2009	59.5%	67.1%
2010	60.3%	67.9%
2011	57.6%	67.6%
2012	64.3%	69.5%
2013	55.4%	69.5%
2014	62.2%	70.6%
2015	72.3%	72.1%
2016	36.7%	73.3%

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	Aprilia RS 125R Extrema	Gilera Runner
0k-10k miles	73.1%	76.2%
10k-20k miles	59.7%	67.5%
20k-30k miles	51.1%	65.4%
30k-40k miles	44.7%	67.2%

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

Aprilia RS 125R Extrema vs Gilera Runner FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Aprilia RS 125R Extrema or the Gilera Runner?

The Gilera Runner passes its MOT first time more often than the Aprilia RS 125R Extrema: 70.8% vs 61.3%, a 9.5-point lead. Adjusted for age, mileage and test class, the Gilera Runner still comes out ahead: -8.5 points vs comparable bikes for the Aprilia RS 125R Extrema, -0.7 for the Gilera Runner. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Aprilia RS 125R Extrema fail its MOT on most?

Lights & signalling: 18.5% of Aprilia RS 125R Extrema MOT tests failed on it, then steering & suspension (16.2%).

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 Aprilia RS 125R Extrema or the Gilera Runner?

At 30k-40k miles the Gilera Runner passes first time more often: 44.7% for the Aprilia RS 125R Extrema vs 67.2% for the Gilera Runner.

APRILIA RS 125R EXTREMA 61.3% pass · 767 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.