1998 Yamaha Unclassified MOT Pass Rate
Pass rate for Unclassified models manufactured in 1998, based on 2,521 real MOT test results.
Data from official DVSA MOT testing records
This page shows all Unclassified cars tested in 1998. Want to see how cars built in 1998 hold up over time?
View 1998 Yamaha Unclassified vintage page → (88.2% current pass rate)1998 Yamaha Unclassified MOT Analysis
The 1998 Yamaha Unclassified has an MOT pass rate of 81.0% based on 2,521 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 23,131 miles on the odometer. With a 19.0% failure rate, the 1998 Unclassified is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1998 Yamaha Unclassified is Motorcycle brakes, responsible for 0.7% 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 suspension is the second most common issue at 0.6%. Motorcycle wheels follows at 0.5%.
Top failures specific to 1998 models only. The overall Unclassified 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 | 0.7% | 17 |
| 2 | Motorcycle Suspension | 0.6% | 16 |
| 3 | Motorcycle Wheels | 0.5% | 12 |
| 4 | Motorcycle Lamps And Reflectors | 0.4% | 11 |
| 5 | Motorcycle Structure And Attachments | 0.3% | 8 |
| 6 | Motorcycle Tyres | 0.1% | 3 |
| 7 | Identification Of The Vehicle | 0.1% | 2 |
| 8 | Non-component Advisories | 0.1% | 2 |
| 9 | Motorcycle Steering | 0.1% | 2 |
Failures per 10,000 Miles
avg. 23,131 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 brakes | 0.29 | 0.7% | 17 |
| Motorcycle suspension | 0.27 | 0.6% | 16 |
| Motorcycle wheels | 0.21 | 0.5% | 12 |
| Motorcycle lamps and reflectors | 0.19 | 0.4% | 11 |
| Motorcycle structure and attachments | 0.14 | 0.3% | 8 |
| Motorcycle tyres | 0.05 | 0.1% | 3 |
| Identification of the vehicle | 0.03 | 0.1% | 2 |
| Non-component advisories | 0.03 | 0.1% | 2 |
| Motorcycle steering | 0.03 | 0.1% | 2 |
| Lamps & Electrical | 0.02 | 0.0% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1998 Yamaha Unclassified has an MOT pass rate of 81.0% based on 2,521 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 23,131 miles on the odometer. With a 19.0% failure rate, the 1998 Unclassified is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1998 Yamaha Unclassified, 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 23,131 miles, many of these vehicles are still in good mechanical condition.
Motorcycle brakes — 0.7% of failures
Motorcycle brakes issues account for 0.7% of MOT failures on 1998 Yamaha Unclassified 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 suspension — 0.6% of failures
Motorcycle suspension issues account for 0.6% of MOT failures on 1998 Yamaha Unclassified 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.
Motorcycle wheels — 0.5% of failures
Motorcycle wheels issues account for 0.5% of MOT failures on 1998 Yamaha Unclassified 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.