Kawasaki Ninja 400
Real ownership data from 758 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 |
|---|---|---|
| Lights and indicators | fail | 8.9% |
| Brakes | dangerous | 1.9% |
| Suspension | major | 1.9% |
| Brake discs and pads | dangerous | 1.5% |
| Chain and sprockets | dangerous | 1.3% |
| Other | major | 1.3% |
| Steering and head bearings | dangerous | 1% |
| Exhaust and emissions | major | 0.8% |
Advisories (wear noted but not failed) are excluded above; the most common is brake discs and pads.
Ninja 400 mileage and reliability by year
Use this to judge whether a specific bike is high or low mileage for its age.
| Year | Examples | Median mileage | Miles/year | First-time pass |
|---|---|---|---|---|
| 2023 | 87 | 5,900 mi | 3,134 | 87.5% |
| 2022 | 63 | 5,546 mi | 608 | 81.54% |
| 2021 | 33 | 4,671 mi | 1,376 | 89.33% |
| 2020 | 139 | 7,030 mi | 1,086 | 89.42% |
| 2019 | 188 | 7,986 mi | 1,103 | 88.76% |
| 2018 | 235 | 9,457 mi | 1,381 | 88.56% |
Ninja 400 questions, answered with data
What are the most common problems with the Kawasaki Ninja 400?
Across 758 UK examples, the most frequently recorded MOT faults are lights and indicators (8.9% of all recorded faults), brakes (1.9% of all recorded faults), suspension (1.9% of all recorded faults).
What is average mileage for a Kawasaki Ninja 400?
The median Kawasaki Ninja 400 in the UK has covered 7,785 miles, and typically rides about 1,298 miles a year. Half of all examples fall between 3,698 and 13,144 miles.
Is the Kawasaki Ninja 400 reliable?
88.32% of Kawasaki Ninja 400 MOT tests are passed first time, with an average of 0.59 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 758 Kawasaki Ninja 400 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.