Skip to content

Mg Mbg vs Mg Zs: reliability comparison

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

Mg Mbg
76%
MOT pass rate · 9 vehicles
Mg Zs
74%
MOT pass rate · 38,862 vehicles
Verdict: On MOT pass rate the Mg Mbg (76%) 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 Mbg Mg Zs
MOT pass rate 76% ✓ 74%
MOT failure rate 24% ✓ 26%
Faults & advisories per test 1.6 ✓ 1.8
Dangerous-fault share 0% ✓ 1%
Average mileage 44,865 mi 71,653 mi
Sample size (vehicles) 9 38,862

Most common faults

Mg Mbg

  1. Oil leak
  2. Coolant leak
  3. Windscreen washer provides insufficient washer liquid (8.2.3)
  4. Nearside Front Front wheel bearing has slight play (2.5.A.3c)
  5. Nearside Front Headlamp aim too low (1.8)
  6. Exhaust emissions carbon monoxide content excessive (7.3.B.1a)

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 Mbg (76%) and Mg Zs (74%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mg Mbg 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.