Honda Cb400 Sf MOT Pass Rate
Overall pass rate across all manufacture years, based on 55 real MOT test results. Failure rate: 21.8%.
Data from official DVSA MOT testing records
Honda Cb400 Sf MOT Reliability Overview
The Honda Cb400 Sf is a rare vehicle in the UK, with 55 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 78.2% and a failure rate of 21.8%, which is well above the UK average of approximately 37%.
Based on this data, the Honda Cb400 Sf earns a "Excellent" reliability rating. The average Honda Cb400 Sf presents for MOT with approximately 39,294 miles on the clock.
The most common MOT failure for the Honda Cb400 Sf is Motorcycle brakes, affecting 10.9% of all tests. 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. The second most common issue is Motorcycle suspension at 7.3%. Motorcycle tyres rounds out the top three at 7.3%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Motorcycle Brakes | 10.9% | 6 |
| 2 | Motorcycle Lighting And Signalling | 9.1% | 5 |
| 3 | Motorcycle Suspension | 7.3% | 4 |
| 4 | Motorcycle Steering And Suspension | 7.3% | 4 |
| 5 | Motorcycle Tyres | 7.3% | 4 |
| 6 | Motorcycle Lamps And Reflectors | 7.3% | 4 |
| 7 | Motorcycle Driving Controls | 5.5% | 3 |
| 8 | Motorcycle Drive System | 3.6% | 2 |
| 9 | Motorcycle Structure And Attachments | 3.6% | 2 |
| 10 | Motorcycle Reg Plates And Vin | 1.8% | 1 |
| 11 | Motorcycle Tyres And Wheels | 1.8% | 1 |
| 12 | Motorcycle Body And Structure | 1.8% | 1 |
Failures per 10,000 Miles
avg. 39,294 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 | 2.78 | 10.9% | 6 |
| Motorcycle lighting and signalling | 2.31 | 9.1% | 5 |
| Motorcycle suspension | 1.85 | 7.3% | 4 |
| Motorcycle steering and suspension | 1.85 | 7.3% | 4 |
| Motorcycle tyres | 1.85 | 7.3% | 4 |
| Motorcycle lamps and reflectors | 1.85 | 7.3% | 4 |
| Motorcycle driving controls | 1.39 | 5.5% | 3 |
| Motorcycle drive system | 0.93 | 3.6% | 2 |
| Motorcycle structure and attachments | 0.93 | 3.6% | 2 |
| Motorcycle reg plates and vin | 0.46 | 1.8% | 1 |
| Motorcycle tyres and wheels | 0.46 | 1.8% | 1 |
| Motorcycle body and structure | 0.46 | 1.8% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Honda Cb400 Sf has 39,294 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Honda Cb400 Sf has a mileage-adjusted failure rate of 5.55% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Honda Cb400 Sf MOT Data
The Honda Cb400 Sf is a rare vehicle in the UK, with 55 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 78.2% and a failure rate of 21.8%, which is well above the UK average of approximately 37%.
For Honda Cb400 Sf owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle brakes and motorcycle suspension for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Cb400 Sf is likely to perform.
Motorcycle brakes — 10.9% of failures
Motorcycle brakes issues account for 10.9% of MOT failures on the Honda Cb400 Sf. 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 suspension — 7.3% of failures
Motorcycle suspension issues account for 7.3% of MOT failures on the Honda Cb400 Sf. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Motorcycle tyres — 7.3% of failures
Motorcycle tyres issues account for 7.3% of MOT failures on the Honda Cb400 Sf. 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.
Frequently Asked Questions
What is the MOT pass rate for the Honda Cb400 Sf?
Based on 55 (based on limited data) MOT tests in our database, the Honda Cb400 Sf has an overall pass rate of 78.2% (21.8% fail rate).
What are the most common MOT failures on a Honda Cb400 Sf?
The top 3 reasons a Honda Cb400 Sf fails its MOT are: 1. Motorcycle brakes (10.9%), 2. Motorcycle suspension (7.3%), 3. Motorcycle tyres (7.3%). Check these areas before booking your MOT.
Is the Honda Cb400 Sf reliable?
With a 21.8% MOT failure rate, the Cb400 Sf is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Honda Cb400 Sf?
Based on failure data, focus on: Motorcycle brakes (10.9%); Motorcycle suspension (7.3%); Motorcycle tyres (7.3%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.