Opel Manta vs Opel Kadett: MOT reliability compared
Updated 05 September 2026.
23.9%
Opel Manta MOT failure rate, 5.2 pts lower than Opel Kadett
Opel Manta is the more reliable MOT performer: 23.9% of Opel Manta MOTs fail versus 29.1% for Opel Kadett, a 5.2 point gap.
| Metric | Opel Manta | Opel Kadett |
|---|---|---|
| MOT failure rate | 23.9% | 29.1% |
| Tests analysed | 10,396 | 5,464 |
| Most common failure | Lamps & electrical (46.0%) | Lamps & electrical (40.5%) |
Questions and answers
Which is more reliable, Opel Manta or Opel Kadett?
Opel Manta is the more reliable MOT performer: 23.9% of Opel Manta MOTs fail versus 29.1% for Opel Kadett, a 5.2 point gap.
What is the MOT failure rate of the Opel Manta?
23.9% of Opel Manta MOT tests result in a failure, from 10,396 tests.
What is the MOT failure rate of the Opel Kadett?
29.1% of Opel Kadett MOT tests result in a failure, from 5,464 tests.