1978 Yamaha Trike MOT Pass Rate
Pass rate for Trike models manufactured in 1978, based on 48 real MOT test results.
Data from official DVSA MOT testing records
1978 Yamaha Trike MOT Analysis
The 1978 Yamaha Trike has an MOT pass rate of 83.3% based on 48 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 18,571 miles on the odometer. With a 16.7% failure rate, the 1978 Trike is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1978 Yamaha Trike is Lamps, Reflectors and Electrical Equipment, responsible for 6.3% 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. Motor tricycles and quadricycles is the second most common issue at 2.1%. Tyres follows at 2.1%.
Top failures specific to 1978 models only. The overall Trike page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
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| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Lamps, Reflectors And Electrical Equipment | 6.3% | 3 |
| 2 | Motor Tricycles And Quadricycles | 2.1% | 1 |
| 3 | Tyres | 2.1% | 1 |
Failures per 10,000 Miles
avg. 18,571 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 |
|---|---|---|---|
| Lamps & Electrical | 3.37 | 6.3% | 3 |
| Motor tricycles and quadricycles | 1.12 | 2.1% | 1 |
| Tyres | 1.12 | 2.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1978 Yamaha Trike has an MOT pass rate of 83.3% based on 48 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 18,571 miles on the odometer. With a 16.7% failure rate, the 1978 Trike is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1978 Yamaha Trike, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to lamps, reflectors and electrical equipment: 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 18,571 miles, many of these vehicles are still in good mechanical condition.
Lamps, Reflectors and Electrical Equipment — 6.3% of failures
Lamps, Reflectors and Electrical Equipment issues account for 6.3% of MOT failures on 1978 Yamaha Trike 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.
Motor tricycles and quadricycles — 2.1% of failures
Motor tricycles and quadricycles issues account for 2.1% of MOT failures on 1978 Yamaha Trike models. Motor tricycles and quadricycles 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.
Tyres — 2.1% of failures
Tyres issues account for 2.1% of MOT failures on 1978 Yamaha Trike models. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.