Norton 19S vs Suzuki GSF600

The Norton 19S passes its MOT first time more often than the Suzuki GSF600 — 95.5% vs 77.3%, a 18.2-point lead.

MOT reliability, side by side

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

Metric	Norton 19S	Suzuki GSF600
First-time pass rate	95.5%	77.3%
Outright fail rate	3.0%	14.2%
Median miles at test	10,712	21,080
MOT tests analysed	133	143,023
Most common failure	steering and suspension	brakes

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.

NORTON 19S 95.5% pass · 133 tests SUZUKI GSF600 77.3% pass · 143k tests

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