Yamaha Yb1 MOT Pass Rate
Overall pass rate across all manufacture years, based on 104 real MOT test results. Failure rate: 11.5%.
Data from official DVSA MOT testing records
Yamaha Yb1 MOT Reliability Overview
The Yamaha Yb1 is a rare vehicle in the UK, with 104 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 88.5% and a failure rate of 11.5%, which is well above the UK average of approximately 37%.
Based on this data, the Yamaha Yb1 earns a "Excellent" reliability rating. The average Yamaha Yb1 presents for MOT with approximately 8,149 miles on the clock. The 1998 manufacture year performs best with a 90.6% pass rate.
The most common MOT failure for the Yamaha Yb1 is Motorcycle wheels, affecting 4.8% of all tests. Wheel failures include cracked or severely corroded alloy wheels, missing or loose wheel nuts, and wheels that are insecurely attached. These are safety-critical and relatively rare compared to tyre failures. The second most common issue is Motorcycle audible warning (Horn) at 2.9%. Motorcycle brakes rounds out the top three at 1.9%. 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 Wheels | 4.8% | 5 |
| 2 | Motorcycle Audible Warning (Horn) | 2.9% | 3 |
| 3 | Motorcycle Steering And Suspension | 1.9% | 2 |
| 4 | Motorcycle Lamps And Reflectors | 1.9% | 2 |
| 5 | Motorcycle Structure And Attachments | 1.9% | 2 |
| 6 | Motorcycle Brakes | 1.9% | 2 |
Failures per 10,000 Miles
avg. 8,149 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 wheels | 5.90 | 4.8% | 5 |
| Motorcycle audible warning (Horn) | 3.54 | 2.9% | 3 |
| Motorcycle steering and suspension | 2.36 | 1.9% | 2 |
| Motorcycle lamps and reflectors | 2.36 | 1.9% | 2 |
| Motorcycle structure and attachments | 2.36 | 1.9% | 2 |
| Motorcycle brakes | 2.36 | 1.9% | 2 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Yamaha Yb1 has 8,149 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 Yb1 has a mileage-adjusted failure rate of 14.11% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Yamaha Yb1 MOT Data
The Yamaha Yb1 is a rare vehicle in the UK, with 104 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 88.5% and a failure rate of 11.5%, which is well above the UK average of approximately 37%.
For Yamaha Yb1 owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle wheels and motorcycle audible warning (horn) 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 Yb1 is likely to perform.
Motorcycle wheels — 4.8% of failures
Motorcycle wheels issues account for 4.8% of MOT failures on the Yamaha Yb1. Wheel failures include cracked or severely corroded alloy wheels, missing or loose wheel nuts, and wheels that are insecurely attached. These are safety-critical and relatively rare compared to tyre failures. Typical repair costs: £100–400 per wheel. Pre-MOT check: Visually inspect wheels for cracks, especially around the spokes and rim. Check that all wheel nuts are present and tightened. Look for signs of impact damage on alloy wheels.
Motorcycle audible warning (Horn) — 2.9% of failures
Motorcycle audible warning (Horn) issues account for 2.9% of MOT failures on the Yamaha Yb1. Motorcycle audible warning (Horn) 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 — 1.9% of failures
Motorcycle brakes issues account for 1.9% of MOT failures on the Yamaha Yb1. 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 Yb1?
Based on 104 MOT tests in our database, the Yamaha Yb1 has an overall pass rate of 88.5% (11.5% fail rate).
What are the most common MOT failures on a Yamaha Yb1?
The top 3 reasons a Yamaha Yb1 fails its MOT are: 1. Motorcycle wheels (4.8%), 2. Motorcycle audible warning (Horn) (2.9%), 3. Motorcycle brakes (1.9%). Check these areas before booking your MOT.
Is the Yamaha Yb1 reliable?
With a 11.5% MOT failure rate, the Yb1 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Yamaha Yb1?
Based on failure data, focus on: Motorcycle wheels (4.8%); Motorcycle audible warning (Horn) (2.9%); Motorcycle brakes (1.9%). 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.