1979 Honda Cb400a MOT Pass Rate
Pass rate for Cb400a models manufactured in 1979, based on 64 real MOT test results.
Data from official DVSA MOT testing records
1979 Honda Cb400a MOT Analysis
The 1979 Honda Cb400a has an MOT pass rate of 82.8% based on 64 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 21,739 miles on the odometer. With a 17.2% failure rate, the 1979 Cb400a is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1979 Honda Cb400a is Motorcycle lighting and signalling, responsible for 1.6% of failures. Motorcycle lighting and signalling 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.
Top failures specific to 1979 models only. The overall Cb400a 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 Lighting And Signalling | 1.6% | 1 |
Failures per 10,000 Miles
avg. 21,739 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 lighting and signalling | 0.72 | 1.6% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1979 Honda Cb400a has an MOT pass rate of 82.8% based on 64 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 21,739 miles on the odometer. With a 17.2% failure rate, the 1979 Cb400a is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1979 Honda Cb400a, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle lighting and signalling: 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 21,739 miles, many of these vehicles are still in good mechanical condition.
Motorcycle lighting and signalling — 1.6% of failures
Motorcycle lighting and signalling issues account for 1.6% of MOT failures on 1979 Honda Cb400a models. Motorcycle lighting and signalling 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.