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Mg 4 door vs Mg Zs: reliability comparison

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

Mg 4 door
67%
MOT pass rate · 1 vehicles
Mg Zs
74%
MOT pass rate · 38,862 vehicles
Verdict: On MOT pass rate the Mg 4 door (67%) and Mg Zs (74%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mg 4 door Mg Zs
MOT pass rate 67% 74% ✓
MOT failure rate 33% 26% ✓
Faults & advisories per test 0.8 ✓ 1.8
Dangerous-fault share 0% ✓ 1%
Average mileage 52,119 mi 71,653 mi
Sample size (vehicles) 1 38,862

Most common faults

Mg 4 door

  1. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  2. Centre Exhaust has a major leak of exhaust gases (7.1.2)
  3. Front Windscreen wiper does not clear the windscreen effectively (8.2.2)
  4. Rear Exhaust has a major leak of exhaust gases (7.1.2)
  5. Nearside rear brake binding (3.7.B.1)
  6. Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)

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 4 door (67%) and Mg Zs (74%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mg 4 door 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.