Proton Gen-2 vs Proton 1.5: MOT reliability compared
Updated 05 September 2026.
29.5%
Proton Gen-2 MOT failure rate, 1.2 pts lower than Proton 1.5
Proton Gen-2 is the more reliable MOT performer: 29.5% of Proton Gen-2 MOTs fail versus 30.7% for Proton 1.5, a 1.2 point gap.
| Metric | Proton Gen-2 | Proton 1.5 |
|---|---|---|
| MOT failure rate | 29.5% | 30.7% |
| Tests analysed | 60,404 | 37,203 |
| Most common failure | Brakes (36.4%) | Other (32.8%) |
Questions and answers
Which is more reliable, Proton Gen-2 or Proton 1.5?
Proton Gen-2 is the more reliable MOT performer: 29.5% of Proton Gen-2 MOTs fail versus 30.7% for Proton 1.5, a 1.2 point gap.
What is the MOT failure rate of the Proton Gen-2?
29.5% of Proton Gen-2 MOT tests result in a failure, from 60,404 tests.
What is the MOT failure rate of the Proton 1.5?
30.7% of Proton 1.5 MOT tests result in a failure, from 37,203 tests.