BIKERELIABILITY Reg check
League table/ Velocette MSS/vs Kawasaki ZX-6R
Head-to-head · 2005–2025

Data as of: DVSA MOT results to 2025

Velocette MSS vs Kawasaki ZX-6R

The Velocette MSS passes its MOT first time more often than the Kawasaki ZX-6R: 95.2% vs 78.1%, a 17.1-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Velocette MSS Kawasaki ZX-6R
First-time pass rate 95.2% 78.1%
Outright fail rate 1.1% 14.0%
Engine size 500cc 599cc
Rank among all models #62 of 5428 #3895 of 5428
Median miles at test 14,066 19,446
MOT tests analysed 1,232 173,956
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.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better
Component Velocette MSS Kawasaki ZX-6R
Lights & signalling 0.3% 6.1%
Brakes 0.3% 5.2%
Steering & suspension 0.2% 4.6%
Tyres & wheels 0.2% 3.6%
Structure & body 0% 1.2%
Drive system 0.1% 1.0%
Fuel & exhaust 0.1% 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 Velocette MSS Kawasaki ZX-6R
2009 94.6% 76.6%
2010 94.2% 76.3%
2011 92.4% 76.6%
2012 97.2% 75.4%
2013 92.1% 75.5%
2014 92.5% 76.4%
2015 97.0% 76.7%
2016 87.1% 77.7%

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 Velocette MSS Kawasaki ZX-6R
0k-10k miles 95.0% 86.1%
10k-20k miles 92.2% 80.6%
20k-30k miles 95.9% 75.4%
30k-40k miles 96.0% 71.8%
40k-50k miles 96.1% 69.5%
50k-60k miles 98.5% 69.0%

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

Velocette MSS vs Kawasaki ZX-6R FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Velocette MSS or the Kawasaki ZX-6R?

The Velocette MSS passes its MOT first time more often than the Kawasaki ZX-6R: 95.2% vs 78.1%, a 17.1-point lead. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Velocette MSS fail its MOT on most?

Lights & signalling: 0.3% of Velocette MSS MOT tests failed on it, then brakes (0.3%).

What does the Kawasaki ZX-6R fail its MOT on most?

Lights & signalling: 6.1% of Kawasaki ZX-6R MOT tests failed on it, then brakes (5.2%).

Which holds up better at high mileage, the Velocette MSS or the Kawasaki ZX-6R?

At 50k-60k miles the Velocette MSS passes first time more often: 98.5% for the Velocette MSS vs 69.0% for the Kawasaki ZX-6R.

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