Ajs Firefox vs Peugeot Speedfight

The Ajs Firefox passes its MOT first time more often than the Peugeot Speedfight — 69.4% vs 65.2%, a 4.2-point lead.

MOT reliability, side by side

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

Metric	Ajs Firefox	Peugeot Speedfight
First-time pass rate	69.4%	65.2%
Outright fail rate	21.9%	26.3%
Median miles at test	6,168	13,547
MOT tests analysed	1,537	83,728
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.

AJS FIREFOX 69.4% pass · 1,537 tests PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests

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