BIKERELIABILITY Reg check
Head-to-head · 2005–2025

Data as of: DVSA MOT results to 2025

Keeway RKS 125 Sport vs Gilera Runner

The Gilera Runner passes its MOT first time more often than the Keeway RKS 125 Sport: 70.8% vs 65.9%, a 4.9-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Keeway RKS 125 Sport Gilera Runner
First-time pass rate 65.9% 70.8%
Outright fail rate 21.2% 21.5%
Vs comparable bikes (age & mileage adjusted) -11.0 pts -0.7 pts
Engine size 125cc 124cc
Rank among all models #4974 of 5428 #4675 of 5428
Median miles at test 9,335 11,381
MOT tests analysed 264 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.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested
Test year Keeway RKS 125 Sport Gilera Runner
2020 75.7% 75.8%
2021 63.3% 79.1%
2022 50.0% 80.5%
2023 55.9% 81.3%

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 Keeway RKS 125 Sport Gilera Runner
0k-10k miles 68.3% 76.2%
10k-20k miles 54.7% 67.5%

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

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