Kawasaki Z400b MOT Pass Rate
Overall pass rate across all manufacture years, based on 35 real MOT test results. Failure rate: 42.9%.
Data from official DVSA MOT testing records
Kawasaki Z400b MOT Reliability Overview
The Kawasaki Z400b is a rare vehicle in the UK, with 35 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 57.1% and a failure rate of 42.9%, which is slightly below the UK average of approximately 37%.
Based on this data, the Kawasaki Z400b earns a "Below Average" reliability rating. The average Kawasaki Z400b presents for MOT with approximately 38,655 miles on the clock.
The most common MOT failure for the Kawasaki Z400b is Motorcycle lighting and signalling, affecting 17.1% of all tests. Motorcycle lighting and signalling issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. The second most common issue is Motorcycle reg plates and vin at 8.6%. Motorcycle steering and suspension rounds out the top three at 8.6%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Motorcycle Lighting And Signalling | 17.1% | 6 |
| 2 | Motorcycle Steering And Suspension | 8.6% | 3 |
| 3 | Motorcycle Reg Plates And Vin | 8.6% | 3 |
| 4 | Motorcycle Tyres And Wheels | 5.7% | 2 |
| 5 | Motorcycle Brakes | 5.7% | 2 |
| 6 | Motorcycle Driving Controls | 2.9% | 1 |
| 7 | Motorcycle Drive System | 2.9% | 1 |
| 8 | Motorcycle Steering | 2.9% | 1 |
| 9 | Motorcycle Fuel And Exhaust | 2.9% | 1 |
| 10 | Motorcycle Lamps And Reflectors | 2.9% | 1 |
Failures per 10,000 Miles
avg. 38,655 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Motorcycle lighting and signalling | 4.43 | 17.1% | 6 |
| Motorcycle steering and suspension | 2.22 | 8.6% | 3 |
| Motorcycle reg plates and vin | 2.22 | 8.6% | 3 |
| Motorcycle tyres and wheels | 1.48 | 5.7% | 2 |
| Motorcycle brakes | 1.48 | 5.7% | 2 |
| Motorcycle driving controls | 0.74 | 2.9% | 1 |
| Motorcycle drive system | 0.74 | 2.9% | 1 |
| Motorcycle steering | 0.74 | 2.9% | 1 |
| Motorcycle fuel and exhaust | 0.74 | 2.9% | 1 |
| Motorcycle lamps and reflectors | 0.74 | 2.9% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Kawasaki Z400b has 38,655 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Kawasaki Z400b has a mileage-adjusted failure rate of 11.10% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Kawasaki Z400b MOT Data
The Kawasaki Z400b is a rare vehicle in the UK, with 35 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 57.1% and a failure rate of 42.9%, which is slightly below the UK average of approximately 37%.
For Kawasaki Z400b owners, these results suggest average reliability — some preparation before MOT can improve pass chances. Focus your pre-MOT checks on motorcycle lighting and signalling and motorcycle reg plates and vin for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Z400b is likely to perform.
Motorcycle lighting and signalling — 17.1% of failures
Motorcycle lighting and signalling issues account for 17.1% of MOT failures on the Kawasaki Z400b. Motorcycle lighting and signalling issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. Typical repair costs: £100–400. Pre-MOT check: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights.
Motorcycle reg plates and vin — 8.6% of failures
Motorcycle reg plates and vin issues account for 8.6% of MOT failures on the Kawasaki Z400b. Motorcycle reg plates and vin issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. Typical repair costs: £100–400. Pre-MOT check: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights.
Motorcycle steering and suspension — 8.6% of failures
Motorcycle steering and suspension issues account for 8.6% of MOT failures on the Kawasaki Z400b. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Frequently Asked Questions
What is the MOT pass rate for the Kawasaki Z400b?
Based on 35 (based on limited data) MOT tests in our database, the Kawasaki Z400b has an overall pass rate of 57.1% (42.9% fail rate).
What are the most common MOT failures on a Kawasaki Z400b?
The top 3 reasons a Kawasaki Z400b fails its MOT are: 1. Motorcycle lighting and signalling (17.1%), 2. Motorcycle reg plates and vin (8.6%), 3. Motorcycle steering and suspension (8.6%). Check these areas before booking your MOT.
Is the Kawasaki Z400b reliable?
With a 42.9% MOT failure rate, the Z400b is about average compared to the UK average of ~40%.
What should I check before an MOT on my Kawasaki Z400b?
Based on failure data, focus on: Motorcycle lighting and signalling (17.1%); Motorcycle reg plates and vin (8.6%); Motorcycle steering and suspension (8.6%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.