1989 Yamaha Yb100 MOT Pass Rate
Pass rate for Yb100 models manufactured in 1989, based on 182 real MOT test results.
Data from official DVSA MOT testing records
1989 Yamaha Yb100 MOT Analysis
The 1989 Yamaha Yb100 has an MOT pass rate of 74.7% based on 182 tests — above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 22,294 miles on the odometer. With a 25.3% failure rate, the 1989 Yb100 is rated as "Very Good" for MOT reliability.
The leading cause of MOT failure for the 1989 Yamaha Yb100 is Motorcycle steering, responsible for 1.1% of failures. Steering failures include excessive play in the steering wheel, leaking power steering fluid, worn track rod ends, and damaged steering rack. These affect vehicle control and are closely related to suspension wear. Typical repair costs range from £150–600. Motorcycle wheels is the second most common issue at 1.1%. Motorcycle audible warning (Horn) follows at 0.5%.
Top failures specific to 1989 models only. The overall Yb100 page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Motorcycle Steering | 1.1% | 2 |
| 2 | Motorcycle Wheels | 1.1% | 2 |
| 3 | Motorcycle Audible Warning (Horn) | 0.5% | 1 |
| 4 | Motorcycle Brakes | 0.5% | 1 |
| 5 | Motorcycle Lamps And Reflectors | 0.5% | 1 |
Failures per 10,000 Miles
avg. 22,294 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 steering | 0.49 | 1.1% | 2 |
| Motorcycle wheels | 0.49 | 1.1% | 2 |
| Motorcycle audible warning (Horn) | 0.25 | 0.5% | 1 |
| Motorcycle brakes | 0.25 | 0.5% | 1 |
| Motorcycle lamps and reflectors | 0.25 | 0.5% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1989 Yamaha Yb100 has an MOT pass rate of 74.7% based on 182 tests — above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 22,294 miles on the odometer. With a 25.3% failure rate, the 1989 Yb100 is rated as "Very Good" for MOT reliability.
If you own or are considering buying a 1989 Yamaha Yb100, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle steering: Check for excessive steering wheel play (more than a few inches of free movement). Listen for whining from the power steering pump. Look for fluid leaks under the car near the front wheels. With relatively low average mileage of 22,294 miles, many of these vehicles are still in good mechanical condition.
Motorcycle steering — 1.1% of failures
Motorcycle steering issues account for 1.1% of MOT failures on 1989 Yamaha Yb100 models. Steering failures include excessive play in the steering wheel, leaking power steering fluid, worn track rod ends, and damaged steering rack. These affect vehicle control and are closely related to suspension wear. Typical repair costs: £150–600. Pre-MOT check: Check for excessive steering wheel play (more than a few inches of free movement). Listen for whining from the power steering pump. Look for fluid leaks under the car near the front wheels.
Motorcycle wheels — 1.1% of failures
Motorcycle wheels issues account for 1.1% of MOT failures on 1989 Yamaha Yb100 models. 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) — 0.5% of failures
Motorcycle audible warning (Horn) issues account for 0.5% of MOT failures on 1989 Yamaha Yb100 models. 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.