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Mg Mgf vs Mg Zs: reliability comparison

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

Mg Mgf
67%
MOT pass rate · 41,973 vehicles
Mg Zs
74%
MOT pass rate · 38,862 vehicles
More reliable
Verdict: On MOT pass rate, the Mg Zs is the more reliable of the two — 74% pass first time versus 67%. It's one signal among several; check the full breakdown below.

Head to head

Measure Mg Mgf Mg Zs
MOT pass rate 67% 74% ✓
MOT failure rate 33% 26% ✓
Faults & advisories per test 2.5 1.8 ✓
Dangerous-fault share 1% 1%
Average mileage 85,206 mi 71,653 mi
Sample size (vehicles) 41,973 38,862

Most common faults

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)

Mg Zs

  1. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Parking brake: efficiency below requirements (3.7.B.7)
  4. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  6. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Reliability FAQ

On MOT pass rate, the Mg Zs is the more reliable of the two — 74% pass first time versus 67%. It's one signal among several; check the full breakdown below.

Full Mg Mgf report Full Mg Zs 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.