Mg B gt vs Mg Tf135: 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 Tf135
79%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mg B gt (75%) and Mg Tf135 (79%) 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 Tf135 |
|---|---|---|
| MOT pass rate | 75% | 79% ✓ |
| MOT failure rate | 25% | 21% ✓ |
| Faults & advisories per test | 1.7 ✓ | 4.6 |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 56,621 mi | 43,618 mi |
| Sample size (vehicles) | 47,800 | 1 |
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 Tf135
- Nearside Front Brake pipe slightly corroded (3.6.B.2c)
- Offside Front Brake pipe slightly corroded (3.6.B.2c)
- Nearside Front Lower Suspension arm has slight play in a ball joint (2.4.G.2)
- Nearside Front Upper Suspension arm has slight play in a ball joint (2.4.G.2)
- Nearside Rear Brake hose slightly chafed (3.6.B.4d)
- Offside Front Track rod end ball joint has slight play (2.2.B.1f)
Reliability FAQ
On MOT pass rate the Mg B gt (75%) and Mg Tf135 (79%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mg B gt report Full Mg Tf135 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.