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Mg Mgb convertable vs Mg Mgf: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Mg Mgb convertable
81%
MOT pass rate · 2 vehicles
Mg Mgf
67%
MOT pass rate · 41,973 vehicles
Verdict: On MOT pass rate the Mg Mgb convertable (81%) and Mg Mgf (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mg Mgb convertable Mg Mgf
MOT pass rate 81% ✓ 67%
MOT failure rate 19% ✓ 33%
Faults & advisories per test 1.9 ✓ 2.5
Dangerous-fault share 5% 1% ✓
Average mileage 55,782 mi 85,206 mi
Sample size (vehicles) 2 41,973

Most common faults

Mg Mgb convertable

  1. Nearside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a)
  2. Nearside Front Road wheel spoke slightly loose several (4.2.A.1b)
  3. Nearside Front Tyre worn close to the legal limit 3mm (4.1.E.1)
  4. Nearside Rear Road wheel spoke slightly loose several (4.2.A.1b)
  5. Offside Front Road wheel spoke slightly loose several (4.2.A.1b)
  6. Offside Front Tyre worn close to the legal limit 3mm (4.1.E.1)

Mg Mgf

  1. Parking brake: efficiency below requirements (3.7.B.7)
  2. Exhaust emissions carbon monoxide content after 2nd fast idle excessive (7.3.D.3)
  3. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Nearside Front Tyre worn close to the legal limit (4.1.E.1)

Reliability FAQ

On MOT pass rate the Mg Mgb convertable (81%) and Mg Mgf (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mg Mgb convertable report Full Mg Mgf 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.