Bsa A7ss MOT Pass Rate
Overall pass rate across all manufacture years, based on 111 real MOT test results. Failure rate: 8.1%.
Data from official DVSA MOT testing records
Bsa A7ss MOT Reliability Overview
The Bsa A7ss is a rare vehicle in the UK, with 111 MOT test results recorded in our database spanning 2 manufacture years. It has an overall MOT pass rate of 91.9% and a failure rate of 8.1%, which is well above the UK average of approximately 37%.
Based on this data, the Bsa A7ss earns a "Excellent" reliability rating. The average Bsa A7ss presents for MOT with approximately 18,960 miles on the clock. Manufacture year matters: 1961 models achieve the highest pass rate at 93.0%, while 1960 models have the lowest at 89.5%. This 3.5 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Bsa A7ss is Motorcycle brakes, affecting 4.5% 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 steering and suspension at 3.6%. Motorcycle lighting and signalling rounds out the top three at 3.6%. 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
Pass Rate by Manufacture Year
* 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 | 4.5% | 5 |
| 2 | Motorcycle Lighting And Signalling | 3.6% | 4 |
| 3 | Motorcycle Steering And Suspension | 3.6% | 4 |
| 4 | Motorcycle Tyres And Wheels | 1.8% | 2 |
| 5 | Motorcycle Lamps And Reflectors | 0.9% | 1 |
| 6 | Motorcycle Drive System | 0.9% | 1 |
Failures per 10,000 Miles
avg. 18,960 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 | 2.38 | 4.5% | 5 |
| Motorcycle lighting and signalling | 1.90 | 3.6% | 4 |
| Motorcycle steering and suspension | 1.90 | 3.6% | 4 |
| Motorcycle tyres and wheels | 0.95 | 1.8% | 2 |
| Motorcycle lamps and reflectors | 0.48 | 0.9% | 1 |
| Motorcycle drive system | 0.48 | 0.9% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Bsa A7ss has 18,960 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 Bsa A7ss has a mileage-adjusted failure rate of 4.27% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Bsa A7ss MOT Data
The Bsa A7ss is a rare vehicle in the UK, with 111 MOT test results recorded in our database spanning 2 manufacture years. It has an overall MOT pass rate of 91.9% and a failure rate of 8.1%, which is well above the UK average of approximately 37%.
For Bsa A7ss 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 steering and 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 A7ss is likely to perform.
Motorcycle brakes — 4.5% of failures
Motorcycle brakes issues account for 4.5% of MOT failures on the Bsa A7ss. 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 steering and suspension — 3.6% of failures
Motorcycle steering and suspension issues account for 3.6% of MOT failures on the Bsa A7ss. 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 lighting and signalling — 3.6% of failures
Motorcycle lighting and signalling issues account for 3.6% of MOT failures on the Bsa A7ss. 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.
Frequently Asked Questions
What is the MOT pass rate for the Bsa A7ss?
Based on 111 MOT tests in our database, the Bsa A7ss has an overall pass rate of 91.9% (8.1% fail rate).
What are the most common MOT failures on a Bsa A7ss?
The top 3 reasons a Bsa A7ss fails its MOT are: 1. Motorcycle brakes (4.5%), 2. Motorcycle steering and suspension (3.6%), 3. Motorcycle lighting and signalling (3.6%). Check these areas before booking your MOT.
Is the Bsa A7ss reliable?
With a 8.1% MOT failure rate, the A7ss is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Bsa A7ss?
Based on failure data, focus on: Motorcycle brakes (4.5%); Motorcycle steering and suspension (3.6%); Motorcycle lighting and signalling (3.6%). 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.