Mg Maestro 20 efi vs Mg Zs: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mg Maestro 20 efi
62%
MOT pass rate · 23 vehicles
Mg Zs
74%
MOT pass rate · 38,862 vehicles
Verdict: On MOT pass rate the Mg Maestro 20 efi (62%) and Mg Zs (74%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mg Maestro 20 efi | Mg Zs |
|---|---|---|
| MOT pass rate | 62% | 74% ✓ |
| MOT failure rate | 38% | 26% ✓ |
| Faults & advisories per test | 1.8 | 1.8 |
| Dangerous-fault share | 0% ✓ | 1% |
| Average mileage | 93,207 mi | 71,653 mi |
| Sample size (vehicles) | 23 | 38,862 |
Most common faults
Mg Maestro 20 efi
- Offside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)
- Offside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
- Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
- Oil leak
- Nearside Stop lamp not working (1.2.1b)
- Nearside Front Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
Mg Zs
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Parking brake: efficiency below requirements (3.7.B.7)
- 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)
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
Reliability FAQ
On MOT pass rate the Mg Maestro 20 efi (62%) and Mg Zs (74%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mg Maestro 20 efi report Full Mg Zs 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.