1983 Yamaha Xs400 MOT Pass Rate
Pass rate for Xs400 models manufactured in 1983, based on 31 real MOT test results.
Data from official DVSA MOT testing records
1983 Yamaha Xs400 MOT Analysis
The 1983 Yamaha Xs400 has an MOT pass rate of 80.6% based on 31 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 30,672 miles on the odometer. With a 19.4% failure rate, the 1983 Xs400 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1983 Yamaha Xs400 is Motorcycle lamps and reflectors, responsible for 9.7% of failures. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs range from £5–50. Motorcycle structure and attachments is the second most common issue at 6.5%. Motorcycle wheels follows at 3.2%.
Top failures specific to 1983 models only. The overall Xs400 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 Lamps And Reflectors | 9.7% | 3 |
| 2 | Motorcycle Structure And Attachments | 6.5% | 2 |
| 3 | Motorcycle Wheels | 3.2% | 1 |
| 4 | Motorcycle Steering | 3.2% | 1 |
Failures per 10,000 Miles
avg. 30,672 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 lamps and reflectors | 3.16 | 9.7% | 3 |
| Motorcycle structure and attachments | 2.10 | 6.5% | 2 |
| Motorcycle wheels | 1.05 | 3.2% | 1 |
| Motorcycle steering | 1.05 | 3.2% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1983 Yamaha Xs400 has an MOT pass rate of 80.6% based on 31 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 30,672 miles on the odometer. With a 19.4% failure rate, the 1983 Xs400 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1983 Yamaha Xs400, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle lamps and reflectors: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test. With relatively low average mileage of 30,672 miles, many of these vehicles are still in good mechanical condition.
Motorcycle lamps and reflectors — 9.7% of failures
Motorcycle lamps and reflectors issues account for 9.7% of MOT failures on 1983 Yamaha Xs400 models. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Motorcycle structure and attachments — 6.5% of failures
Motorcycle structure and attachments issues account for 6.5% of MOT failures on 1983 Yamaha Xs400 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 wheels — 3.2% of failures
Motorcycle wheels issues account for 3.2% of MOT failures on 1983 Yamaha Xs400 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.