Buell S1 Lightning vs Suzuki GSF1200

The Buell S1 Lightning passes its MOT first time more often than the Suzuki GSF1200 — 84.1% vs 82.4%, a 1.7-point lead.

MOT reliability, side by side

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

Metric	Buell S1 Lightning	Suzuki GSF1200
First-time pass rate	84.1%	82.4%
Outright fail rate	8.6%	8.9%
Median miles at test	11,469	20,274
MOT tests analysed	560	97,637
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.

BUELL S1 LIGHTNING 84.1% pass · 560 tests SUZUKI GSF1200 82.4% pass · 97.6k tests

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