MG B vs MG Zt: MOT reliability compared
Updated 05 September 2026.
23.2%
MG B MOT failure rate, 5.7 pts lower than MG Zt
MG B is the more reliable MOT performer: 23.2% of MG B MOTs fail versus 28.9% for MG Zt, a 5.7 point gap.
| Metric | MG B | MG Zt |
|---|---|---|
| MOT failure rate | 23.2% | 28.9% |
| Tests analysed | 341,344 | 193,997 |
| Most common failure | Lamps & electrical (40.9%) | Lamps & electrical (38.7%) |
Questions and answers
Which is more reliable, MG B or MG Zt?
MG B is the more reliable MOT performer: 23.2% of MG B MOTs fail versus 28.9% for MG Zt, a 5.7 point gap.
What is the MOT failure rate of the MG B?
23.2% of MG B MOT tests result in a failure, from 341,344 tests.
What is the MOT failure rate of the MG Zt?
28.9% of MG Zt MOT tests result in a failure, from 193,997 tests.