Mg B gt vs Mg Zt+ cdti: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mg B gt
75%
MOT pass rate · 47,800 vehicles
More reliable
Mg Zt+ cdti
71%
MOT pass rate · 206 vehicles
Verdict: On MOT pass rate, the Mg B gt is the more reliable of the two — 75% pass first time versus 71%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Mg B gt | Mg Zt+ cdti |
|---|---|---|
| MOT pass rate | 75% ✓ | 71% |
| MOT failure rate | 25% ✓ | 29% |
| Faults & advisories per test | 1.7 ✓ | 1.9 |
| Dangerous-fault share | 0% ✓ | 1% |
| Average mileage | 56,621 mi | 153,592 mi |
| Sample size (vehicles) | 47,800 | 206 |
Most common faults
Mg B gt
- Oil leak
- Parking brake: efficiency below requirements (3.7.B.7)
- Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
- Windscreen washer provides insufficient washer liquid (8.2.3)
- Horn not working (1.6.2a)
- Nearside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a)
Mg Zt+ cdti
- Nearside Front 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 Rear Tyre worn close to the legal limit (4.1.E.1)
- Parking brake: efficiency below requirements (3.7.B.7)
- Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)
Reliability FAQ
On MOT pass rate, the Mg B gt is the more reliable of the two — 75% pass first time versus 71%. It's one signal among several; check the full breakdown below.
Full Mg B gt report Full Mg Zt+ cdti 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.