1978 Yamaha Xt500 MOT Pass Rate
Pass rate for Xt500 models manufactured in 1978, based on 481 real MOT test results.
Data from official DVSA MOT testing records
This page shows all Xt500 cars tested in 1978. Want to see how cars built in 1978 hold up over time?
View 1978 Yamaha Xt500 vintage page → (90.6% current pass rate)1978 Yamaha Xt500 MOT Analysis
The 1978 Yamaha Xt500 has an MOT pass rate of 80.5% based on 481 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 16,420 miles on the odometer. With a 19.5% failure rate, the 1978 Xt500 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1978 Yamaha Xt500 is Motorcycle audible warning (Horn), responsible for 0.2% of failures. 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 range from £100–400. Motorcycle lamps and reflectors is the second most common issue at 0.2%.
Top failures specific to 1978 models only. The overall Xt500 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 Audible Warning (Horn) | 0.2% | 1 |
| 2 | Motorcycle Lamps And Reflectors | 0.2% | 1 |
Failures per 10,000 Miles
avg. 16,420 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 audible warning (Horn) | 0.13 | 0.2% | 1 |
| Motorcycle lamps and reflectors | 0.13 | 0.2% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1978 Yamaha Xt500 has an MOT pass rate of 80.5% based on 481 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 16,420 miles on the odometer. With a 19.5% failure rate, the 1978 Xt500 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1978 Yamaha Xt500, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle audible warning (horn): Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights. With relatively low average mileage of 16,420 miles, many of these vehicles are still in good mechanical condition.
Motorcycle audible warning (Horn) — 0.2% of failures
Motorcycle audible warning (Horn) issues account for 0.2% of MOT failures on 1978 Yamaha Xt500 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.
Motorcycle lamps and reflectors — 0.2% of failures
Motorcycle lamps and reflectors issues account for 0.2% of MOT failures on 1978 Yamaha Xt500 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.