1998 Yamaha Xtz660 MOT Pass Rate
Pass rate for Xtz660 models manufactured in 1998, based on 72 real MOT test results.
Data from official DVSA MOT testing records
1998 Yamaha Xtz660 MOT Analysis
The 1998 Yamaha Xtz660 has an MOT pass rate of 87.5% based on 72 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 26,600 miles on the odometer. With a 12.5% failure rate, the 1998 Xtz660 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1998 Yamaha Xtz660 is Motorcycle brakes, responsible for 5.6% of failures. 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 range from £150–400. Motorcycle structure and attachments is the second most common issue at 4.2%. Motorcycle suspension follows at 1.4%.
Top failures specific to 1998 models only. The overall Xtz660 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 Brakes | 5.6% | 4 |
| 2 | Motorcycle Structure And Attachments | 4.2% | 3 |
| 3 | Motorcycle Suspension | 1.4% | 1 |
| 4 | Motorcycle Steering | 1.4% | 1 |
Failures per 10,000 Miles
avg. 26,600 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.
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| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Motorcycle brakes | 2.09 | 5.6% | 4 |
| Motorcycle structure and attachments | 1.57 | 4.2% | 3 |
| Motorcycle suspension | 0.52 | 1.4% | 1 |
| Motorcycle steering | 0.52 | 1.4% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1998 Yamaha Xtz660 has an MOT pass rate of 87.5% based on 72 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 26,600 miles on the odometer. With a 12.5% failure rate, the 1998 Xtz660 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1998 Yamaha Xtz660, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle brakes: 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). With relatively low average mileage of 26,600 miles, many of these vehicles are still in good mechanical condition.
Motorcycle brakes — 5.6% of failures
Motorcycle brakes issues account for 5.6% of MOT failures on 1998 Yamaha Xtz660 models. 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).
Motorcycle structure and attachments — 4.2% of failures
Motorcycle structure and attachments issues account for 4.2% of MOT failures on 1998 Yamaha Xtz660 models. Motorcycle structure and attachments 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 suspension — 1.4% of failures
Motorcycle suspension issues account for 1.4% of MOT failures on 1998 Yamaha Xtz660 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.