MG MOT failure rates by model
MG cars fail 26.2% of MOT tests. Here is every MG model ranked by failure rate, and the item each loses most tests to.
What is the MOT failure rate for MG cars?
Across 3,506,382 MOT tests in the DVSA record, 26.2% of MG cars fail. That is 0.5 points above the 25.7% national average across all cars. The MG models below are ranked worst to best by failure rate, each with the failure area it loses most tests to.
| Model | Failure rate | Tests | Top failure area |
|---|---|---|---|
| MG Mgf | 33.3% | 555,446 | Brakes |
| MG Zr | 30.2% | 654,551 | Lamps & electrical |
| MG Maestro | 29.2% | 2,643 | Brakes |
| MG Zt | 28.9% | 193,984 | Lamps & electrical |
| MG Zt-T | 28.8% | 83,279 | Brakes |
| MG Zt-T+ | 28.6% | 2,041 | Lamps & electrical |
| MG Metro | 28.5% | 5,472 | Lamps & electrical |
| MG Zt+ | 28.4% | 4,721 | Lamps & electrical |
| MG Tf | 27.1% | 481,305 | Brakes |
| MG Zs+ | 27.1% | 1,945 | Brakes |
| MG B-Gt | 26.5% | 1,146 | Lamps & electrical |
| MG Zr+ | 26.4% | 2,998 | Lamps & electrical |
| MG Midget | 25.2% | 126,843 | Lamps & electrical |
| MG 6 | 24.9% | 30,893 | Lamps & electrical |
| MG Bgt | 24.7% | 24,833 | Lamps & electrical |
| MG Mgbgt | 24.2% | 2,323 | Brakes |
| MG Gt | 23.6% | 4,026 | Lamps & electrical |
| MG B | 23.2% | 341,292 | Lamps & electrical |
| MG Mgb | 22.9% | 35,142 | Lamps & electrical |
| MG Zs | 22.7% | 505,135 | Brakes |
| MG Roadster | 19.6% | 17,170 | Lamps & electrical |
| MG 1300 | 19.5% | 1,037 | Brakes |
| MG MG | 19.0% | 8,783 | Lamps & electrical |
| MG Mgc | 18.8% | 2,744 | Brakes |
| MG 3 | 18.5% | 169,577 | Tyres |
| MG C | 17.8% | 13,412 | Brakes |
| MG Gs | 17.5% | 22,023 | Lamps & electrical |
| MG Magnette | 16.8% | 4,175 | Brakes |
| MG Mga | 14.9% | 4,371 | Brakes |
| MG A | 14.4% | 16,092 | Brakes |
| MG Td/Tf | 13.8% | 4,265 | Brakes |
| MG Rv8 | 13.7% | 14,143 | Brakes |
| MG 5 | 13.6% | 41,311 | Tyres |
| MG Td | 13.2% | 2,842 | Brakes |
| MG Tc | 11.4% | 2,464 | Brakes |
| MG 4 | 10.8% | 15,991 | Tyres |
| MG Hs | 10.4% | 86,803 | Tyres |
Which MG fails its MOT most, and which least?
The MG Mgf has the highest failure rate at 33.3%, and the MG Hs the lowest at 10.4%. A higher rate reflects how old and how hard a model tends to be used as much as how it was built, so the oldest models in the range usually sit near the top.
Compare another make
Failure rates for other makes with a large MOT sample.
| Make |
|---|
| Yamaha MOT failure rates |
| Saab MOT failure rates |
| Lexus MOT failure rates |
| Porsche MOT failure rates |
| Alfa Romeo MOT failure rates |
| Subaru MOT failure rates |
Sources: DVSA MOT History API: MOT test results and defect data ยท DVSA MOT testing data for Great Britain