Opel Vectra vs Opel Kadett: MOT reliability compared
Updated 05 September 2026.
29.1%
Opel Kadett MOT failure rate, 3.8 pts lower than Opel Vectra
Opel Kadett is the more reliable MOT performer: 29.1% of Opel Kadett MOTs fail versus 32.9% for Opel Vectra, a 3.8 point gap.
| Metric | Opel Vectra | Opel Kadett |
|---|---|---|
| MOT failure rate | 32.9% | 29.1% |
| Tests analysed | 5,836 | 5,464 |
| Most common failure | Lamps & electrical (43.0%) | Lamps & electrical (40.5%) |
Questions and answers
Which is more reliable, Opel Vectra or Opel Kadett?
Opel Kadett is the more reliable MOT performer: 29.1% of Opel Kadett MOTs fail versus 32.9% for Opel Vectra, a 3.8 point gap.
What is the MOT failure rate of the Opel Vectra?
32.9% of Opel Vectra MOT tests result in a failure, from 5,836 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.