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Mg Bg vs Mg Mgf: reliability comparison

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

Mg Bg
89%
MOT pass rate · 7 vehicles
Mg Mgf
67%
MOT pass rate · 41,973 vehicles
Verdict: On MOT pass rate the Mg Bg (89%) 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 Bg Mg Mgf
MOT pass rate 89% ✓ 67%
MOT failure rate 11% ✓ 33%
Faults & advisories per test 0.8 ✓ 2.5
Dangerous-fault share 0% ✓ 1%
Average mileage 51,857 mi 85,206 mi
Sample size (vehicles) 7 41,973

Most common faults

Mg Bg

  1. Offside Front suspension has slight play in a lower suspension ball joint (2.5.B.1a)
  2. Offside Front suspension has slight play in a upper suspension ball joint (2.5.B.1a)
  3. Offside Rear Suspension spring mounting prescribed area is excessively corroded (2.4.A.3)
  4. n/s front floor corroded +holed ,<not specified area>
  5. Nearside Registration plate lamp not working (1.1.C.1d)
  6. all brakes tested using decelerometer and roller test.

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 Bg (89%) and Mg Mgf (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mg Bg 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.