1978 Kawasaki Z400 MOT Pass Rate
Pass rate for Z400 models manufactured in 1978, based on 45 real MOT test results.
Data from official DVSA MOT testing records
1978 Kawasaki Z400 MOT Analysis
The 1978 Kawasaki Z400 has an MOT pass rate of 68.9% based on 45 tests — slightly above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 24,197 miles on the odometer. With a 31.1% failure rate, the 1978 Z400 is rated as "Good" for MOT reliability.
The leading cause of MOT failure for the 1978 Kawasaki Z400 is Motorcycle lamps and reflectors, responsible for 2.2% 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. Non-component advisories is the second most common issue at 2.2%.
Top failures specific to 1978 models only. The overall Z400 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 | 2.2% | 1 |
| 2 | Non-component Advisories | 2.2% | 1 |
Failures per 10,000 Miles
avg. 24,197 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 lamps and reflectors | 0.92 | 2.2% | 1 |
| Non-component advisories | 0.92 | 2.2% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1978 Kawasaki Z400 has an MOT pass rate of 68.9% based on 45 tests — slightly above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 24,197 miles on the odometer. With a 31.1% failure rate, the 1978 Z400 is rated as "Good" for MOT reliability.
If you own or are considering buying a 1978 Kawasaki Z400, 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 24,197 miles, many of these vehicles are still in good mechanical condition.
Motorcycle lamps and reflectors — 2.2% of failures
Motorcycle lamps and reflectors issues account for 2.2% of MOT failures on 1978 Kawasaki Z400 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.
Non-component advisories — 2.2% of failures
Non-component advisories issues account for 2.2% of MOT failures on 1978 Kawasaki Z400 models. Non-component advisories 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.