1991 Yamaha Diversion MOT Pass Rate
Pass rate for Diversion models manufactured in 1991, based on 83 real MOT test results.
Data from official DVSA MOT testing records
1991 Yamaha Diversion MOT Analysis
The 1991 Yamaha Diversion has an MOT pass rate of 62.7% based on 83 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 36,598 miles on the odometer. With a 37.3% failure rate, the 1991 Diversion is rated as "Average" for MOT reliability.
The leading cause of MOT failure for the 1991 Yamaha Diversion is Motorcycle steering, responsible for 1.2% 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 suspension is the second most common issue at 1.2%.
Top failures specific to 1991 models only. The overall Diversion 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 | 1.2% | 1 |
| 2 | Motorcycle Suspension | 1.2% | 1 |
Failures per 10,000 Miles
avg. 36,598 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 | 0.33 | 1.2% | 1 |
| Motorcycle suspension | 0.33 | 1.2% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1991 Yamaha Diversion has an MOT pass rate of 62.7% based on 83 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 36,598 miles on the odometer. With a 37.3% failure rate, the 1991 Diversion is rated as "Average" for MOT reliability.
If you own or are considering buying a 1991 Yamaha Diversion, budget for potential repairs before each MOT. 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 36,598 miles, many of these vehicles are still in good mechanical condition.
Motorcycle steering — 1.2% of failures
Motorcycle steering issues account for 1.2% of MOT failures on 1991 Yamaha Diversion 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 suspension — 1.2% of failures
Motorcycle suspension issues account for 1.2% of MOT failures on 1991 Yamaha Diversion models. 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.