BIKERELIABILITY Reg check
Head-to-head · 2005–2025

Data as of: DVSA MOT results to 2025

Norton Commando 961 Sport vs Suzuki GSF1200

The Norton Commando 961 Sport passes its MOT first time more often than the Suzuki GSF1200: 89.2% vs 82.4%, a 6.8-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Norton Commando 961 Sport Suzuki GSF1200
First-time pass rate 89.2% 82.4%
Outright fail rate 4.3% 8.9%
Vs comparable bikes (age & mileage adjusted) -0.3 pts -1.2 pts
Engine size 961cc 1,157cc
Rank among all models #1212 of 5428 #3108 of 5428
Median miles at test 2,656 20,274
MOT tests analysed 510 97,637
Most common failure brakes 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.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better
Component Norton Commando 961 Sport Suzuki GSF1200
Lights & signalling 2.7% 4.5%
Brakes 2.9% 2.8%
Steering & suspension 0.4% 2.2%
Tyres & wheels 0.6% 2.0%
Structure & body 0.2% 0.8%
Fuel & exhaust 0% 0.8%
Drive system 0% 0.6%

A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested
Test year Norton Commando 961 Sport Suzuki GSF1200
2016 92.3% 82.2%
2017 100.0% 82.9%
2021 87.1% 82.9%
2022 91.8% 83.6%
2023 87.2% 83.8%
2024 90.9% 83.4%
2025 86.4% 84.1%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

Norton Commando 961 Sport vs Suzuki GSF1200 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Norton Commando 961 Sport or the Suzuki GSF1200?

The Norton Commando 961 Sport passes its MOT first time more often than the Suzuki GSF1200: 89.2% vs 82.4%, a 6.8-point lead. Adjusted for age, mileage and test class the two are level (-0.3 vs -1.2 points against comparable bikes), so the raw gap is mostly down to how old and how used each fleet is. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Norton Commando 961 Sport fail its MOT on most?

Brakes: 2.9% of Norton Commando 961 Sport MOT tests failed on it, then lights & signalling (2.7%).

What does the Suzuki GSF1200 fail its MOT on most?

Lights & signalling: 4.5% of Suzuki GSF1200 MOT tests failed on it, then brakes (2.8%).

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