Yamaha Yz426 MOT Pass Rate
Overall pass rate across all manufacture years, based on 78 real MOT test results. Failure rate: 26.9%.
Data from official DVSA MOT testing records
Yamaha Yz426 MOT Reliability Overview
The Yamaha Yz426 is a rare vehicle in the UK, with 78 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 73.1% and a failure rate of 26.9%, which is above the UK average of approximately 37%.
Based on this data, the Yamaha Yz426 earns a "Very Good" reliability rating. The average Yamaha Yz426 presents for MOT with approximately 9,218 miles on the clock. The 2002 manufacture year performs best with a 66.7% pass rate.
The most common MOT failure for the Yamaha Yz426 is Motorcycle lighting and signalling, affecting 30.8% 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 16.7%. Motorcycle brakes rounds out the top three at 16.7%. 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 | 33.3% | 26 |
| 2 | Motorcycle Reg Plates And Vin | 20.5% | 16 |
| 3 | Motorcycle Steering And Suspension | 19.2% | 15 |
| 4 | Motorcycle Brakes | 17.9% | 14 |
| 5 | Motorcycle Fuel And Exhaust | 9.0% | 7 |
| 6 | Motorcycle Drive System | 7.7% | 6 |
| 7 | Motorcycle Tyres And Wheels | 7.7% | 6 |
| 8 | Motorcycle Structure And Attachments | 3.8% | 3 |
| 9 | Motorcycle Suspension | 2.6% | 2 |
| 10 | Identification Of The Vehicle | 1.3% | 1 |
| 11 | Motorcycle Body And Structure | 1.3% | 1 |
| 12 | Motorcycle Driving Controls | 1.3% | 1 |
| 13 | Motorcycle Lamps And Reflectors | 1.3% | 1 |
Failures per 10,000 Miles
avg. 9,218 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 | 36.16 | 33.3% | 26 |
| Motorcycle reg plates and vin | 22.25 | 20.5% | 16 |
| Motorcycle steering and suspension | 20.86 | 19.2% | 15 |
| Motorcycle brakes | 19.47 | 17.9% | 14 |
| Motorcycle fuel and exhaust | 9.74 | 9.0% | 7 |
| Motorcycle drive system | 8.34 | 7.7% | 6 |
| Motorcycle tyres and wheels | 8.34 | 7.7% | 6 |
| Motorcycle structure and attachments | 4.17 | 3.8% | 3 |
| Motorcycle suspension | 2.78 | 2.6% | 2 |
| Identification of the vehicle | 1.39 | 1.3% | 1 |
| Motorcycle body and structure | 1.39 | 1.3% | 1 |
| Motorcycle driving controls | 1.39 | 1.3% | 1 |
| Motorcycle lamps and reflectors | 1.39 | 1.3% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Yamaha Yz426 has 9,218 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 Yamaha Yz426 has a mileage-adjusted failure rate of 29.18% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Yamaha Yz426 MOT Data
The Yamaha Yz426 is a rare vehicle in the UK, with 78 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 73.1% and a failure rate of 26.9%, which is above the UK average of approximately 37%.
For Yamaha Yz426 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 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 Yz426 is likely to perform.
Motorcycle lighting and signalling — 30.8% of failures
Motorcycle lighting and signalling issues account for 30.8% of MOT failures on the Yamaha Yz426. 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 — 16.7% of failures
Motorcycle reg plates and vin issues account for 16.7% of MOT failures on the Yamaha Yz426. 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 brakes — 16.7% of failures
Motorcycle brakes issues account for 16.7% of MOT failures on the Yamaha Yz426. 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 Yz426?
Based on 78 (based on limited data) MOT tests in our database, the Yamaha Yz426 has an overall pass rate of 73.1% (26.9% fail rate).
What are the most common MOT failures on a Yamaha Yz426?
The top 3 reasons a Yamaha Yz426 fails its MOT are: 1. Motorcycle lighting and signalling (30.8%), 2. Motorcycle reg plates and vin (16.7%), 3. Motorcycle brakes (16.7%). Check these areas before booking your MOT.
Is the Yamaha Yz426 reliable?
With a 26.9% MOT failure rate, the Yz426 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Yamaha Yz426?
Based on failure data, focus on: Motorcycle lighting and signalling (30.8%); Motorcycle reg plates and vin (16.7%); Motorcycle brakes (16.7%). 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.