Proton 1.5 vs Proton Jumbuck: MOT reliability compared
Updated 05 September 2026.
30.0%
Proton Jumbuck MOT failure rate, 0.7 pts lower than Proton 1.5
Proton Jumbuck is the more reliable MOT performer: 30.0% of Proton Jumbuck MOTs fail versus 30.7% for Proton 1.5, a 0.7 point gap.
| Metric | Proton 1.5 | Proton Jumbuck |
|---|---|---|
| MOT failure rate | 30.7% | 30.0% |
| Tests analysed | 37,203 | 30,444 |
| Most common failure | Other (32.8%) | Lamps & electrical (29.6%) |
Questions and answers
Which is more reliable, Proton 1.5 or Proton Jumbuck?
Proton Jumbuck is the more reliable MOT performer: 30.0% of Proton Jumbuck MOTs fail versus 30.7% for Proton 1.5, a 0.7 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 Jumbuck?
30.0% of Proton Jumbuck MOT tests result in a failure, from 30,444 tests.