Yamaha Wr400f MOT Pass Rate
Overall pass rate across all manufacture years, based on 305 real MOT test results. Failure rate: 19.7%.
Data from official DVSA MOT testing records
Yamaha Wr400f MOT Reliability Overview
The Yamaha Wr400f is a rare vehicle in the UK, with 305 MOT test results recorded in our database spanning 5 manufacture years. It has an overall MOT pass rate of 80.3% and a failure rate of 19.7%, which is well above the UK average of approximately 37%.
Based on this data, the Yamaha Wr400f earns a "Excellent" reliability rating. The average Yamaha Wr400f presents for MOT with approximately 4,445 miles on the clock. Manufacture year matters: 1999 models achieve the highest pass rate at 95.7%, while 2000 models have the lowest at 75.4%. This 20.3 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Yamaha Wr400f is Motorcycle lighting and signalling, affecting 17.0% 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 steering and suspension at 13.1%. Motorcycle brakes rounds out the top three at 12.5%. 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
Pass Rate by Manufacture Year
* 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 | 25.9% | 79 |
| 2 | Motorcycle Steering And Suspension | 19.3% | 59 |
| 3 | Motorcycle Brakes | 14.1% | 43 |
| 4 | Motorcycle Reg Plates And Vin | 6.9% | 21 |
| 5 | Motorcycle Drive System | 5.6% | 17 |
| 6 | Motorcycle Tyres And Wheels | 5.2% | 16 |
| 7 | Motorcycle Structure And Attachments | 3.3% | 10 |
| 8 | Motorcycle Lamps And Reflectors | 3.0% | 9 |
| 9 | Motorcycle Fuel And Exhaust | 2.6% | 8 |
| 10 | Motorcycle Suspension | 2.3% | 7 |
| 11 | Identification Of The Vehicle | 0.7% | 2 |
| 12 | Motorcycle Tyres | 0.7% | 2 |
| 13 | Motorcycle Audible Warning (Horn) | 0.7% | 2 |
| 14 | Motorcycle Body And Structure | 0.3% | 1 |
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Mileage at MOT
The average Yamaha Wr400f has 4,445 miles when tested for MOT.
About Yamaha Wr400f MOT Data
The Yamaha Wr400f is a rare vehicle in the UK, with 305 MOT test results recorded in our database spanning 5 manufacture years. It has an overall MOT pass rate of 80.3% and a failure rate of 19.7%, which is well above the UK average of approximately 37%.
For Yamaha Wr400f owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle lighting and signalling and motorcycle steering and suspension 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 Wr400f is likely to perform.
Motorcycle lighting and signalling — 17.0% of failures
Motorcycle lighting and signalling issues account for 17.0% of MOT failures on the Yamaha Wr400f. 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 steering and suspension — 13.1% of failures
Motorcycle steering and suspension issues account for 13.1% of MOT failures on the Yamaha Wr400f. 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.
Motorcycle brakes — 12.5% of failures
Motorcycle brakes issues account for 12.5% of MOT failures on the Yamaha Wr400f. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Frequently Asked Questions
What is the MOT pass rate for the Yamaha Wr400f?
Based on 305 MOT tests in our database, the Yamaha Wr400f has an overall pass rate of 80.3% (19.7% fail rate).
What are the most common MOT failures on a Yamaha Wr400f?
The top 3 reasons a Yamaha Wr400f fails its MOT are: 1. Motorcycle lighting and signalling (17.0%), 2. Motorcycle steering and suspension (13.1%), 3. Motorcycle brakes (12.5%). Check these areas before booking your MOT.
Is the Yamaha Wr400f reliable?
With a 19.7% MOT failure rate, the Wr400f is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Yamaha Wr400f?
Based on failure data, focus on: Motorcycle lighting and signalling (17.0%); Motorcycle steering and suspension (13.1%); Motorcycle brakes (12.5%). 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.