Bsa Unknown Reliability, MOT Pass Rate & Common Faults
Free Bsa Unknown car check
Is the Bsa Unknown reliable? We analysed 2,422 real MOT tests across 1,982 vehicles to find out.
Got a specific Bsa Unknown? Enter the reg for a free check:
The Bsa Unknown is above average for reliability based on real UK MOT data. Common problems include position lamp does not illuminate immediately when it is switched on, stop lamp does not illuminate immediately a brake applies and headlamp at least one does not illuminate on dipped beam. Here's everything you need to know before buying a used Bsa Unknown.
Bsa Unknown Number Plates
Number plates registered to a Bsa Unknown. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Bsa Unknown MOT Pass Rate by Year
How likely is a Bsa Unknown to pass its MOT? Here's the pass rate for each registration year, newest first.
Bsa Unknown Problems — What Goes Wrong?
The most common reasons a Bsa Unknown fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Bsa Unknown Mileage — What's Normal?
How many miles does a typical Bsa Unknown owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Bsa Unknown MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Bsa Unknown year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1971 | 77 | 90.9% | 1,542 | 11,546 | 17,274 |
| 1970 | 122 | 91.8% | 2,544 | 12,340 | 17,674 |
| 1969 | 114 | 82.5% | 442 | 5,190 | 13,519 |
| 1968 | 180 | 90.6% | 1,901 | 12,300 | 20,191 |
| 1967 | 118 | 87.3% | 635 | 10,782 | 19,526 |
| 1966 | 96 | 89.6% | 802 | 13,502 | 23,794 |
| 1965 | 73 | 93.2% | 3,190 | 12,438 | 24,970 |
| 1964 | 66 | 90.9% | 2,667 | 15,787 | 26,777 |
| 1963 | 76 | 90.8% | 2,960 | 12,268 | 23,780 |
| 1962 | 107 | 93.5% | 4,782 | 16,310 | 30,238 |
| 1961 | 156 | 85.3% | 1,804 | 6,644 | 29,809 |
| 1960 | 135 | 89.6% | 2,056 | 16,966 | 38,201 |
| 1959 | 63 | 88.9% | 705 | 14,373 | 24,572 |
| 1958 | 58 | 89.7% | 2,812 | 8,000 | 25,624 |
| 1955 | 50 | 98.0% | 327 | 4,697 | 26,134 |
How Long Does a Bsa Unknown Last?
Based on 1,982 Bsa Unknown vehicles on UK roads.
Bsa Unknown Mileage Distribution
Total mileage recorded across all Bsa Unknown MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used Bsa Unknown
Based on MOT pass rates across all registration years with sufficient test data.
98.0% MOT pass rate from 50 tests
82.5% MOT pass rate from 114 tests
The best year to buy a used Bsa Unknown is 1955, which has the highest MOT pass rate at 98.0% across 50 tests. The 1969 model year has the lowest pass rate at 82.5% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Bsa Unknown Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Bsa Unknown THIS CAR | 89.6% | 2,422 | 9,054 mi | 71 yrs |
| Bsa A10 | 92.2% | 10,105 | 12,338 mi | 74 yrs |
| Bsa Bantam | 89.9% | 7,723 | 13,212 mi | 77 yrs |
| Bsa C15 | 90.2% | 6,096 | 14,541 mi | 67 yrs |
| Morris Mini Cooper | 81.1% | 3,420 | 42,142 mi | 64 yrs |
Compared to the Bsa A10 (92.2% pass rate) and the Bsa Bantam (89.9% pass rate), the Bsa Unknown trails behind on MOT reliability.
Found a Bsa Unknown you like?
Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Bsa UnknownShould you buy a used Bsa Unknown?
The Bsa Unknown has an overall MOT pass rate of 89.6% across 2,422 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common problems on the Bsa Unknown are position lamp does not illuminate immediately when it is switched on (8 recorded failures), stop lamp does not illuminate immediately a brake applies (7), and headlamp at least one does not illuminate on dipped beam (7). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
A typical Bsa Unknown owner drives around 159 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
In terms of longevity, most Bsa Unknown models stay on UK roads for around 71 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.