Bsa B50t MOT Pass Rate
Overall pass rate across all manufacture years, based on 40 real MOT test results. Failure rate: 5.0%.
Data from official DVSA MOT testing records
Bsa B50t MOT Reliability Overview
The Bsa B50t is a rare vehicle in the UK, with 40 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 95.0% and a failure rate of 5.0%, which is well above the UK average of approximately 37%.
Based on this data, the Bsa B50t earns a "Excellent" reliability rating. The average Bsa B50t presents for MOT with approximately 7,299 miles on the clock. The 1971 manufacture year performs best with a 93.8% pass rate.
The most common MOT failure for the Bsa B50t is Motorcycle tyres and wheels, affecting 5.0% of all tests. 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. The second most common issue is Motorcycle brakes at 2.5%. Together, these top 2 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 Tyres And Wheels | 5.0% | 2 |
| 2 | Motorcycle Brakes | 2.5% | 1 |
Failures per 10,000 Miles
avg. 7,299 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 tyres and wheels | 6.85 | 5.0% | 2 |
| Motorcycle brakes | 3.43 | 2.5% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Bsa B50t has 7,299 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 B50t has a mileage-adjusted failure rate of 6.85% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Bsa B50t MOT Data
The Bsa B50t is a rare vehicle in the UK, with 40 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 95.0% and a failure rate of 5.0%, which is well above the UK average of approximately 37%.
For Bsa B50t owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle tyres and wheels and motorcycle brakes 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 B50t is likely to perform.
Motorcycle tyres and wheels — 5.0% of failures
Motorcycle tyres and wheels issues account for 5.0% of MOT failures on the Bsa B50t. 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.
Motorcycle brakes — 2.5% of failures
Motorcycle brakes issues account for 2.5% of MOT failures on the Bsa B50t. 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).
Frequently Asked Questions
What is the MOT pass rate for the Bsa B50t?
Based on 40 (based on limited data) MOT tests in our database, the Bsa B50t has an overall pass rate of 95.0% (5.0% fail rate).
What are the most common MOT failures on a Bsa B50t?
The top 2 reasons a Bsa B50t fails its MOT are: 1. Motorcycle tyres and wheels (5.0%), 2. Motorcycle brakes (2.5%). Check these areas before booking your MOT.
Is the Bsa B50t reliable?
With a 5.0% MOT failure rate, the B50t is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Bsa B50t?
Based on failure data, focus on: Motorcycle tyres and wheels (5.0%); Motorcycle brakes (2.5%). 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.