Mg B gt vs Mg Gt roadster: 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
Mg Gt roadster
73%
MOT pass rate · 5 vehicles
Verdict: On MOT pass rate the Mg B gt (75%) and Mg Gt roadster (73%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mg B gt | Mg Gt roadster |
|---|---|---|
| MOT pass rate | 75% ✓ | 73% |
| MOT failure rate | 25% ✓ | 27% |
| Faults & advisories per test | 1.7 | 0.9 ✓ |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 56,621 mi | 65,431 mi |
| Sample size (vehicles) | 47,800 | 5 |
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 Gt roadster
- Offside Windscreen wiper does not clear the windscreen effectively (8.2.2)
- Nearside Outer Front Suspension arm locating pin locking device missing (2.4.G.3b)
- Offside Outer Front Suspension arm locating pin locking device missing (2.4.G.3b)
- Exhaust has a minor leak of exhaust gases (7.1.2)
- offside front brake binding slightly
- Nearside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a)
Reliability FAQ
On MOT pass rate the Mg B gt (75%) and Mg Gt roadster (73%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mg B gt report Full Mg Gt roadster 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.