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

Data as of: DVSA MOT results to 2025

Triumph Speed Master 865 vs Suzuki SV650S

The Triumph Speed Master 865 passes its MOT first time more often than the Suzuki SV650S: 85.9% vs 80.6%, a 5.3-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Triumph Speed Master 865 Suzuki SV650S
First-time pass rate 85.9% 80.6%
Outright fail rate 6.8% 11.9%
Vs comparable bikes (age & mileage adjusted) -0.9 pts -4.0 pts
Engine size 865cc 645cc
Rank among all models #2232 of 5428 #3459 of 5428
Median miles at test 9,290 16,958
MOT tests analysed 5,742 84,632
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 Triumph Speed Master 865 Suzuki SV650S
Lights & signalling 3.0% 5.0%
Brakes 2.5% 4.7%
Tyres & wheels 1.2% 3.0%
Steering & suspension 0.7% 2.5%
Structure & body 0.8% 0.9%
Drive system 0.3% 1.2%
Fuel & exhaust 0.7% 0.8%

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 Triumph Speed Master 865 Suzuki SV650S
2013 85.8% 77.9%
2014 84.0% 78.3%
2015 89.1% 78.6%
2016 82.9% 78.9%
2017 85.6% 78.3%
2018 87.8% 80.4%
2019 84.2% 80.0%
2020 87.2% 80.8%

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 Triumph Speed Master 865 Suzuki SV650S
0k-10k miles 88.3% 88.2%
10k-20k miles 83.9% 81.6%
20k-30k miles 81.1% 76.9%
30k-40k miles 83.5% 73.6%
40k-50k miles 79.2% 73.3%

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

Triumph Speed Master 865 vs Suzuki SV650S FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Triumph Speed Master 865 or the Suzuki SV650S?

The Triumph Speed Master 865 passes its MOT first time more often than the Suzuki SV650S: 85.9% vs 80.6%, a 5.3-point lead. Adjusted for age, mileage and test class, the Triumph Speed Master 865 still comes out ahead: -0.9 points vs comparable bikes for the Triumph Speed Master 865, -4.0 for the Suzuki SV650S. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Triumph Speed Master 865 fail its MOT on most?

Lights & signalling: 3.0% of Triumph Speed Master 865 MOT tests failed on it, then brakes (2.5%).

What does the Suzuki SV650S fail its MOT on most?

Lights & signalling: 5.0% of Suzuki SV650S MOT tests failed on it, then brakes (4.7%).

Which holds up better at high mileage, the Triumph Speed Master 865 or the Suzuki SV650S?

At 40k-50k miles the Triumph Speed Master 865 passes first time more often: 79.2% for the Triumph Speed Master 865 vs 73.3% for the Suzuki SV650S.

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