Mg Metro vs Mg Ng convertible: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mg Metro
70%
MOT pass rate · 99,203 vehicles
Mg Ng convertible
67%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mg Metro (70%) and Mg Ng convertible (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mg Metro | Mg Ng convertible |
|---|---|---|
| MOT pass rate | 70% ✓ | 67% |
| MOT failure rate | 30% ✓ | 33% |
| Faults & advisories per test | 1.9 | 1.8 ✓ |
| Dangerous-fault share | 1% | 0% ✓ |
| Average mileage | 69,393 mi | 27,898 mi |
| Sample size (vehicles) | 99,203 | 1 |
Most common faults
Mg Metro
- Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
- Exhaust emissions hydrocarbon content excessive (7.3.B.1b)
- Nearside Front Subframe mounting prescribed area is excessively corroded (2.4.A.3)
- Parking brake: efficiency below requirements (3.7.B.7)
- Oil leak
- Service brake: efficiency below requirements (3.7.B.7)
Mg Ng convertible
- Both front track-rod ball joint dust cover poorly secured
- Both rear tyres worn low
- Nearside rear wheel bearing rough when rotated -very close to excess-
- Offside Rear Rear reflector obscured but not more than 50% (1.5.1b)
- Parking brake: efficiency below requirements (3.7.B.7)
- nearside front wheel slight play in hub
Reliability FAQ
On MOT pass rate the Mg Metro (70%) and Mg Ng convertible (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mg Metro report Full Mg Ng convertible 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.