Most reliable MG: MOT failure rates ranked
Updated 05 September 2026.
10.5%
MG Hs, the most reliable MG
The most reliable MG on MOT failure rate is the MG Hs, at 10.5% failures across 87,375 tests.
| Rank | Model | MOT failure rate | Tests |
|---|---|---|---|
| 1 | MG Hs | 10.5% | 87,375 |
| 2 | MG 4 | 10.8% | 16,138 |
| 3 | MG 5 | 13.6% | 41,567 |
| 4 | MG Rv8 | 13.7% | 14,148 |
| 5 | MG A | 14.4% | 16,095 |
| 6 | MG Gs | 17.5% | 22,083 |
| 7 | MG C | 17.8% | 13,414 |
| 8 | MG 3 | 18.6% | 170,040 |
| 9 | MG MG | 19.0% | 8,796 |
| 10 | MG Roadster | 19.6% | 17,173 |
| 11 | MG Zs | 22.7% | 506,307 |
| 12 | MG Mgb | 22.9% | 35,145 |
| 13 | MG B | 23.2% | 341,344 |
| 14 | MG Bgt | 24.7% | 24,837 |
| 15 | MG 6 | 24.9% | 30,911 |
Questions and answers
What is the most reliable MG at MOT?
The most reliable MG on MOT failure rate is the MG Hs, at 10.5% failures across 87,375 tests.
Which MG fails its MOT most often?
The MG Mgf has the highest MOT failure rate of the MG range, at 33.3%.