1977 Honda Cb-400 Four MOT Pass Rate
Pass rate for Cb-400 Four models manufactured in 1977, based on 47 real MOT test results.
Data from official DVSA MOT testing records
1977 Honda Cb-400 Four MOT Analysis
The 1977 Honda Cb-400 Four has an MOT pass rate of 78.7% based on 47 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 35,040 miles on the odometer. With a 21.3% failure rate, the 1977 Cb-400 Four is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1977 Honda Cb-400 Four is Motorcycle lighting and signalling, responsible for 6.4% 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. Motorcycle brakes is the second most common issue at 2.1%. Motorcycle reg plates and vin follows at 2.1%.
Top failures specific to 1977 models only. The overall Cb-400 Four 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 | 6.4% | 3 |
| 2 | Motorcycle Brakes | 2.1% | 1 |
| 3 | Motorcycle Reg Plates And Vin | 2.1% | 1 |
Failures per 10,000 Miles
avg. 35,040 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 | 1.82 | 6.4% | 3 |
| Motorcycle brakes | 0.61 | 2.1% | 1 |
| Motorcycle reg plates and vin | 0.61 | 2.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1977 Honda Cb-400 Four has an MOT pass rate of 78.7% based on 47 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 35,040 miles on the odometer. With a 21.3% failure rate, the 1977 Cb-400 Four is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1977 Honda Cb-400 Four, 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 35,040 miles, many of these vehicles are still in good mechanical condition.
Motorcycle lighting and signalling — 6.4% of failures
Motorcycle lighting and signalling issues account for 6.4% of MOT failures on 1977 Honda Cb-400 Four 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.
Motorcycle brakes — 2.1% of failures
Motorcycle brakes issues account for 2.1% of MOT failures on 1977 Honda Cb-400 Four models. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Motorcycle reg plates and vin — 2.1% of failures
Motorcycle reg plates and vin issues account for 2.1% of MOT failures on 1977 Honda Cb-400 Four models. Motorcycle reg plates and vin 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.