Audi A3 vs Audi A4: MOT reliability compared
Updated 05 September 2026.
21.7%
Audi A3 MOT failure rate, 2.0 pts lower than Audi A4
Audi A3 is the more reliable MOT performer: 21.7% of Audi A3 MOTs fail versus 23.7% for Audi A4, a 2.0 point gap.
| Metric | Audi A3 | Audi A4 |
|---|---|---|
| MOT failure rate | 21.7% | 23.7% |
| Tests analysed | 7,707,618 | 7,296,945 |
| Most common failure | Tyres (26.9%) | Suspension (29.5%) |
Questions and answers
Which is more reliable, Audi A3 or Audi A4?
Audi A3 is the more reliable MOT performer: 21.7% of Audi A3 MOTs fail versus 23.7% for Audi A4, a 2.0 point gap.
What is the MOT failure rate of the Audi A3?
21.7% of Audi A3 MOT tests result in a failure, from 7,707,618 tests.
What is the MOT failure rate of the Audi A4?
23.7% of Audi A4 MOT tests result in a failure, from 7,296,945 tests.