MG · MOT reliability data
MG3
The MG3 is MG's small hatchback, a budget-focused alternative to the Corsa and Fiesta. MG's brand-wide MOT data is genuinely strong.
MG · MOT reliability data
The MG3 is MG's small hatchback, a budget-focused alternative to the Corsa and Fiesta. MG's brand-wide MOT data is genuinely strong.
75.1%
MOT pass rate
Supermini
Segment
Petrol, hybrid
Fuel types available
Source: DS Auto Labs analysis of DVSA's anonymised 2025 MOT test results (Open Government Licence v3.0): 24,991 first-time tests of MG3 cars of all ages (test class 4, cars and light vans). A pass means a clean first-time pass; a car that failed and was repaired at the test station before passing counts as not passed, and aborted tests are excluded. Age is the car's age at the 2025 test.
What to know
In 2025, MG3 cars passed their MOT first time 75.1% of the time, across 24,991 tests. That is 5.7 points below MG's overall brand average of 80.8% and 2.7 points above the national average of 72.4%.
Age explains much of the difference between models. Pass rates fall steeply as cars get older, for every make, so a model with many old cars on the road looks worse than it is, and a recent model looks better. This compares the MG3 with the typical UK car of the same age.
| Car age | MG3 | All UK cars | Tests |
|---|---|---|---|
| 3-5 years | 82.8% | 87.2% | 8,669 |
| 6-9 years | 72.2% | 79.3% | 12,054 |
| 10-13 years | 66.2% | 67.9% | 3,949 |
Allowing for the age mix of the cars tested, a typical UK car would be expected to pass about 80.4% of the time. The MG3 passed at 75.1%, which is 5.3 points below that expected rate.
A model average says little about one particular car, so check its own MOT history for repeated advisories, past failures and mileage.
Check a specific MG3's MOT history, tax status, and advisories by registration number.
Check MOT historySee how the MG range compares overall, with model-by-model pass rates.
View MG brand page