Proton 1.5 vs Proton Impian: MOT reliability compared
Updated 05 September 2026.
30.2%
Proton Impian MOT failure rate, 0.5 pts lower than Proton 1.5
Proton Impian is the more reliable MOT performer: 30.2% of Proton Impian MOTs fail versus 30.7% for Proton 1.5, a 0.5 point gap.
| Metric | Proton 1.5 | Proton Impian |
|---|---|---|
| MOT failure rate | 30.7% | 30.2% |
| Tests analysed | 37,203 | 30,235 |
| Most common failure | Other (32.8%) | Lamps & electrical (33.0%) |
Questions and answers
Which is more reliable, Proton 1.5 or Proton Impian?
Proton Impian is the more reliable MOT performer: 30.2% of Proton Impian MOTs fail versus 30.7% for Proton 1.5, a 0.5 point gap.
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.
What is the MOT failure rate of the Proton Impian?
30.2% of Proton Impian MOT tests result in a failure, from 30,235 tests.