Herald Motor Company XF 125 GY-2D vs Gilera Runner

The Gilera Runner passes its MOT first time more often than the Herald Motor Company XF 125 GY-2D: 70.8% vs 60.0%, a 10.8-point lead.

MOT reliability, side by side

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

Metric	Herald Motor Company XF 125 GY-2D	Gilera Runner
First-time pass rate	60.0%	70.8%
Outright fail rate	22.2%	21.5%
Vs comparable bikes (age & mileage adjusted)	-14.1 pts	-0.7 pts
Engine size	125cc	124cc
Median miles at test	5,605	11,381
MOT tests analysed	135	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 mileage

first-time MOT pass rate by miles on the clock at test

Mileage	Herald Motor Company XF 125 GY-2D	Gilera Runner
0k-10k miles	60.4%	76.2%
10k-20k miles	56.3%	67.5%

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

HERALD MOTOR COMPANY XF 125 GY-2D 60.0% pass · 135 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.