BIKERELIABILITY Reg check
League table/ Ducati M600/vs Suzuki GSF600
Head-to-head · 2005–2025

Data as of: DVSA MOT results to 2025

Ducati M600 vs Suzuki GSF600

The Ducati M600 passes its MOT first time more often than the Suzuki GSF600: 78.2% vs 77.3%, a 0.9-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Ducati M600 Suzuki GSF600
First-time pass rate 78.2% 77.3%
Outright fail rate 12.4% 14.2%
Vs comparable bikes (age & mileage adjusted) -7.0 pts -6.1 pts
Engine size 583cc 599cc
Rank among all models #3881 of 5428 #4013 of 5428
Median miles at test 13,962 21,080
MOT tests analysed 8,450 143,023
Most common failure lighting and signalling 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.

"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 Ducati M600 Suzuki GSF600
Lights & signalling 7.2% 6.7%
Brakes 3.1% 6.1%
Steering & suspension 3.6% 3.6%
Tyres & wheels 2.5% 3.3%
Drive system 1.2% 1.4%
Structure & body 0.7% 1.5%
Fuel & exhaust 0.6% 1.2%

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 Ducati M600 Suzuki GSF600
2018 80.2% 77.7%
2019 78.3% 76.7%
2020 79.6% 77.8%
2021 81.3% 76.8%
2022 79.0% 78.1%
2023 82.3% 78.2%
2024 84.9% 78.9%
2025 85.0% 79.6%

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

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test
Mileage Ducati M600 Suzuki GSF600
0k-10k miles 83.5% 86.8%
10k-20k miles 75.9% 80.1%
20k-30k miles 75.9% 75.2%
30k-40k miles 72.5% 71.3%
40k-50k miles 75.8% 69.4%
50k-60k miles 79.5% 68.3%

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

Ducati M600 vs Suzuki GSF600 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Ducati M600 or the Suzuki GSF600?

The Ducati M600 passes its MOT first time more often than the Suzuki GSF600: 78.2% vs 77.3%, a 0.9-point lead. Adjusted for age, mileage and test class the two are level (-7.0 vs -6.1 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 Ducati M600 fail its MOT on most?

Lights & signalling: 7.2% of Ducati M600 MOT tests failed on it, then steering & suspension (3.6%).

What does the Suzuki GSF600 fail its MOT on most?

Lights & signalling: 6.7% of Suzuki GSF600 MOT tests failed on it, then brakes (6.1%).

Which holds up better at high mileage, the Ducati M600 or the Suzuki GSF600?

At 50k-60k miles the Ducati M600 passes first time more often: 79.5% for the Ducati M600 vs 68.3% for the Suzuki GSF600.

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