Kawasaki Ninja 400
Real ownership data from 778 UK Ninja 400 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common Ninja 400 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Chain and sprockets | dangerous | 15% |
| Brakes | dangerous | 12.9% |
| Steering and head bearings | dangerous | 10.9% |
| Lights and indicators | major | 7.5% |
| Brake discs and pads | major | 6.1% |
| Electrical | prs | 4.1% |
| Controls and cables | prs | 2.7% |
| Suspension | major | 2.7% |
Advisories (wear noted but not failed) are excluded above; the most common is exhaust and emissions.
Ninja 400 mileage and reliability by year
Use this to judge whether a specific bike is high or low mileage for its age.
| YearYear | MedianMedian mileage | Mi/yrMiles/year | MOT passFirst-time pass | |
|---|---|---|---|---|
| 2023 | 101 | 5,236 mi | 3,134 | 89.22% |
| 2022 | 65 | 5,814 mi | 963 | 82.76% |
| 2021 | 33 | 4,671 mi | 1,364 | 89.61% |
| 2020 | 141 | 7,243 mi | 1,057 | 89.74% |
| 2019 | 189 | 8,306 mi | 1,182 | 88.89% |
| 2018 | 236 | 9,508 mi | 1,381 | 88.72% |
Ninja 400 questions, answered with data
What are the most common problems with the Kawasaki Ninja 400?
Across 778 UK examples, the most frequently recorded MOT faults are chain and sprockets (15% of all recorded faults), brakes (12.9% of all recorded faults), steering and head bearings (10.9% of all recorded faults).
What is average mileage for a Kawasaki Ninja 400?
The median Kawasaki Ninja 400 in the UK has covered 7,776 miles, and typically rides about 1,296 miles a year. Half of all examples fall between 3,768 and 13,548 miles.
Is the Kawasaki Ninja 400 reliable?
88.56% of Kawasaki Ninja 400 MOT tests are passed first time, with an average of 0.05 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 778 Kawasaki Ninja 400 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.