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

Data as of: DVSA MOT results to 2025

Norton Atlas vs Kawasaki ZX-6R

The Norton Atlas passes its MOT first time more often than the Kawasaki ZX-6R: 92.5% vs 78.1%, a 14.4-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Norton Atlas Kawasaki ZX-6R
First-time pass rate 92.5% 78.1%
Outright fail rate 2.2% 14.0%
Vs comparable bikes (age & mileage adjusted) +8.0 pts -5.8 pts
Engine size 750cc 599cc
Rank among all models #384 of 5428 #3895 of 5428
Median miles at test 8,598 19,446
MOT tests analysed 1,153 173,956
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.

"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 Atlas Kawasaki ZX-6R
Lights & signalling 1.0% 6.1%
Brakes 0.3% 5.2%
Steering & suspension 0.6% 4.6%
Tyres & wheels 0.5% 3.6%
Structure & body 0.3% 1.2%
Drive system 0% 1.0%
Fuel & exhaust 0.2% 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 Norton Atlas Kawasaki ZX-6R
2010 90.9% 76.3%
2011 90.4% 76.6%
2012 89.2% 75.4%
2013 93.2% 75.5%
2014 93.5% 76.4%
2015 91.8% 76.7%
2016 93.3% 77.7%
2017 92.6% 77.1%

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 Norton Atlas Kawasaki ZX-6R
0k-10k miles 92.2% 86.1%
10k-20k miles 92.6% 80.6%
20k-30k miles 89.6% 75.4%
30k-40k miles 100.0% 71.8%
40k-50k miles 97.1% 69.5%

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

Norton Atlas vs Kawasaki ZX-6R FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Norton Atlas or the Kawasaki ZX-6R?

The Norton Atlas passes its MOT first time more often than the Kawasaki ZX-6R: 92.5% vs 78.1%, a 14.4-point lead. Adjusted for age, mileage and test class, the Norton Atlas still comes out ahead: +8.0 points vs comparable bikes for the Norton Atlas, -5.8 for the Kawasaki ZX-6R. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Norton Atlas fail its MOT on most?

Lights & signalling: 1.0% of Norton Atlas MOT tests failed on it, then steering & suspension (0.6%).

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 Norton Atlas or the Kawasaki ZX-6R?

At 40k-50k miles the Norton Atlas passes first time more often: 97.1% for the Norton Atlas vs 69.5% for the Kawasaki ZX-6R.

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