MG Zr vs MG 3: MOT reliability compared
Updated 05 September 2026.
18.6%
MG 3 MOT failure rate, 11.6 pts lower than MG Zr
MG 3 is the more reliable MOT performer: 18.6% of MG 3 MOTs fail versus 30.2% for MG Zr, a 11.6 point gap.
| Metric | MG Zr | MG 3 |
|---|---|---|
| MOT failure rate | 30.2% | 18.6% |
| Tests analysed | 654,579 | 170,040 |
| Most common failure | Lamps & electrical (38.5%) | Tyres (27.2%) |
Questions and answers
Which is more reliable, MG Zr or MG 3?
MG 3 is the more reliable MOT performer: 18.6% of MG 3 MOTs fail versus 30.2% for MG Zr, a 11.6 point gap.
What is the MOT failure rate of the MG Zr?
30.2% of MG Zr MOT tests result in a failure, from 654,579 tests.
What is the MOT failure rate of the MG 3?
18.6% of MG 3 MOT tests result in a failure, from 170,040 tests.