Bsa A10 vs Bsa C15: MOT reliability compared
Updated 05 September 2026.
7.9%
Bsa A10 MOT failure rate, 2.0 pts lower than Bsa C15
Bsa A10 is the more reliable MOT performer: 7.9% of Bsa A10 MOTs fail versus 9.9% for Bsa C15, a 2.0 point gap.
| Metric | Bsa A10 | Bsa C15 |
|---|---|---|
| MOT failure rate | 7.9% | 9.9% |
| Tests analysed | 11,062 | 6,321 |
| Most common failure | Brakes (14.4%) | Lamps & electrical (17.4%) |
Questions and answers
Which is more reliable, Bsa A10 or Bsa C15?
Bsa A10 is the more reliable MOT performer: 7.9% of Bsa A10 MOTs fail versus 9.9% for Bsa C15, a 2.0 point gap.
What is the MOT failure rate of the Bsa A10?
7.9% of Bsa A10 MOT tests result in a failure, from 11,062 tests.
What is the MOT failure rate of the Bsa C15?
9.9% of Bsa C15 MOT tests result in a failure, from 6,321 tests.