Brixton BX 125 X vs Gilera Runner

The Brixton BX 125 X passes its MOT first time more often than the Gilera Runner: 75.2% vs 70.8%, a 4.4-point lead.

MOT reliability, side by side

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

Metric	Brixton BX 125 X	Gilera Runner
First-time pass rate	75.2%	70.8%
Outright fail rate	14.2%	21.5%
Vs comparable bikes (age & mileage adjusted)	-2.5 pts	-0.7 pts
Engine size	125cc	124cc
Median miles at test	3,404	11,381
MOT tests analysed	141	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.

BRIXTON BX 125 X 75.2% pass · 141 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.