Bsa C11 Reliability, MOT Pass Rate & Common Faults
Free Bsa C11 car check
Is the Bsa C11 reliable? We analysed 466 real MOT tests across 157 vehicles to find out.
Got a specific Bsa C11? Enter the reg for a free check:
The Bsa C11 is above average for reliability based on real UK MOT data. Common problems include roller brake test the less effective brake control does not achieve an efficiency of 25%., wheel bearings have excessive free play and position lamp does not illuminate immediately when switched on. Here's everything you need to know before buying a used Bsa C11.
Bsa C11 Number Plates
Number plates registered to a Bsa C11. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Bsa C11 MOT Pass Rate by Year
How likely is a Bsa C11 to pass its MOT? Here's the pass rate for each registration year, newest first.
Bsa C11 Problems — What Goes Wrong?
The most common reasons a Bsa C11 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Bsa C11 Mileage — What's Normal?
How many miles does a typical Bsa C11 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Bsa C11 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Bsa C11 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1953 | 58 | 86.2% | 385 | 12,742 | 20,651 |
How Long Does a Bsa C11 Last?
Based on 157 Bsa C11 vehicles on UK roads.
Bsa C11 Mileage Distribution
Total mileage recorded across all Bsa C11 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 C11
Based on MOT pass rates across all registration years with sufficient test data.
86.2% MOT pass rate from 58 tests
The best year to buy a used Bsa C11 is 1953, which has the highest MOT pass rate at 86.2% across 58 tests.
How Does the Bsa C11 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Bsa C11 THIS CAR | 88.6% | 466 | 8,662 mi | 73 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 |
| Hyundai Coupe S | 67.8% | 849 | 83,344 mi | 24 yrs |
Compared to the Bsa A10 (92.2% pass rate) and the Bsa Bantam (89.9% pass rate), the Bsa C11 trails behind on MOT reliability.
Found a Bsa C11 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 C11Should you buy a used Bsa C11?
The Bsa C11 has an overall MOT pass rate of 88.6% across 466 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 C11 are roller brake test the less effective brake control does not achieve an efficiency of 25%. (5 recorded failures), wheel bearings have excessive free play (5), and position lamp does not illuminate immediately when switched on (4). 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 C11 owner drives around 99 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 C11 models stay on UK roads for around 73 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.