MG Tf vs MG B: MOT reliability compared
Updated 05 September 2026.
23.2%
MG B MOT failure rate, 3.9 pts lower than MG Tf
MG B is the more reliable MOT performer: 23.2% of MG B MOTs fail versus 27.1% for MG Tf, a 3.9 point gap.
| Metric | MG Tf | MG B |
|---|---|---|
| MOT failure rate | 27.1% | 23.2% |
| Tests analysed | 481,442 | 341,344 |
| Most common failure | Brakes (36.2%) | Lamps & electrical (40.9%) |
Questions and answers
Which is more reliable, MG Tf or MG B?
MG B is the more reliable MOT performer: 23.2% of MG B MOTs fail versus 27.1% for MG Tf, a 3.9 point gap.
What is the MOT failure rate of the MG Tf?
27.1% of MG Tf MOT tests result in a failure, from 481,442 tests.
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.