Mg Metro vs Mg Tb: 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 Tb
89%
MOT pass rate · 20 vehicles
Verdict: On MOT pass rate the Mg Metro (70%) and Mg Tb (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mg Metro | Mg Tb |
|---|---|---|
| MOT pass rate | 70% | 89% ✓ |
| MOT failure rate | 30% | 11% ✓ |
| Faults & advisories per test | 1.9 | 0.6 ✓ |
| Dangerous-fault share | 1% ✓ | 3% |
| Average mileage | 69,393 mi | 17,809 mi |
| Sample size (vehicles) | 99,203 | 20 |
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 Tb
- Parking brake: efficiency below requirements (3.7.B.7)
- Oil leak
- Nearside Rear wheel bearing has slight play (2.6.2)
- Offside Rear wheel bearing has slight play (2.6.2)
- Nearside Front Headlamp damaged but light output not reduced (1.7.5a)
- Service brake: efficiency below requirements (3.7.B.7)
Reliability FAQ
On MOT pass rate the Mg Metro (70%) and Mg Tb (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mg Metro report Full Mg Tb 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.