Mg 3 vs Mg Mgf: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mg 3
81%
MOT pass rate · 20,687 vehicles
More reliable
Mg Mgf
67%
MOT pass rate · 41,973 vehicles
Verdict: On MOT pass rate, the Mg 3 is the more reliable of the two — 81% pass first time versus 67%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Mg 3 | Mg Mgf |
|---|---|---|
| MOT pass rate | 81% ✓ | 67% |
| MOT failure rate | 19% ✓ | 33% |
| Faults & advisories per test | 1.5 ✓ | 2.5 |
| Dangerous-fault share | 4% | 1% ✓ |
| Average mileage | 45,426 mi | 85,206 mi |
| Sample size (vehicles) | 20,687 | 41,973 |
Most common faults
Mg 3
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
Mg Mgf
- Parking brake: efficiency below requirements (3.7.B.7)
- Exhaust emissions carbon monoxide content after 2nd fast idle excessive (7.3.D.3)
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
Reliability FAQ
On MOT pass rate, the Mg 3 is the more reliable of the two — 81% pass first time versus 67%. It's one signal among several; check the full breakdown below.
Full Mg 3 report Full Mg Mgf report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.