Most reliable Opel: MOT failure rates ranked
Updated 05 September 2026.
23.9%
Opel Manta, the most reliable Opel
The most reliable Opel on MOT failure rate is the Opel Manta, at 23.9% failures across 10,396 tests.
| Rank | Model | MOT failure rate | Tests |
|---|---|---|---|
| 1 | Opel Manta | 23.9% | 10,396 |
| 2 | Opel Kadett | 29.1% | 5,464 |
| 3 | Opel Astra | 30.6% | 31,515 |
| 4 | Opel Zafira | 31.2% | 42,184 |
| 5 | Opel Vectra | 32.9% | 5,836 |
| 6 | Opel Corsa | 33.9% | 20,907 |
Questions and answers
What is the most reliable Opel at MOT?
The most reliable Opel on MOT failure rate is the Opel Manta, at 23.9% failures across 10,396 tests.
Which Opel fails its MOT most often?
The Opel Corsa has the highest MOT failure rate of the Opel range, at 33.9%.