1977 Honda Cb400 MOT Pass Rate
Pass rate for Cb400 models manufactured in 1977, based on 465 real MOT test results.
Data from official DVSA MOT testing records
This page shows all Cb400 cars tested in 1977. Want to see how cars built in 1977 hold up over time?
View 1977 Honda Cb400 vintage page → (91.2% current pass rate)1977 Honda Cb400 MOT Analysis
The 1977 Honda Cb400 has an MOT pass rate of 86.0% based on 465 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 32,499 miles on the odometer. With a 14.0% failure rate, the 1977 Cb400 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1977 Honda Cb400 is Motorcycle brakes, responsible for 0.2% of failures. 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 range from £150–400.
Top failures specific to 1977 models only. The overall Cb400 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 Brakes | 0.2% | 1 |
Failures per 10,000 Miles
avg. 32,499 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 brakes | 0.07 | 0.2% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1977 Honda Cb400 has an MOT pass rate of 86.0% based on 465 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 32,499 miles on the odometer. With a 14.0% failure rate, the 1977 Cb400 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1977 Honda Cb400, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle brakes: 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). With relatively low average mileage of 32,499 miles, many of these vehicles are still in good mechanical condition.
Motorcycle brakes — 0.2% of failures
Motorcycle brakes issues account for 0.2% of MOT failures on 1977 Honda Cb400 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).
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.