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Mg B gt vs Mg Mgb mk1: reliability comparison

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

Mg B gt
75%
MOT pass rate · 47,800 vehicles
Mg Mgb mk1
69%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mg B gt (75%) and Mg Mgb mk1 (69%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mg B gt Mg Mgb mk1
MOT pass rate 75% ✓ 69%
MOT failure rate 25% ✓ 31%
Faults & advisories per test 1.7 1.7
Dangerous-fault share 0% ✓ 11%
Average mileage 56,621 mi 57,777 mi
Sample size (vehicles) 47,800 1

Most common faults

Mg B gt

  1. Oil leak
  2. Parking brake: efficiency below requirements (3.7.B.7)
  3. Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
  4. Windscreen washer provides insufficient washer liquid (8.2.3)
  5. Horn not working (1.6.2a)
  6. Nearside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a)

Mg Mgb mk1

  1. Nearside Front Headlamp aim beam image kick up to the offside (1.8)
  2. Offside Rear Shock absorbers light misting of oil or has limited damping effect (5.3.2 (b))
  3. Rear Stop lamp(s) all not working (4.3.1 (a) (iii))
  4. Nearside Front Windscreen washer provides insufficient washer liquid (3.5 (a))
  5. Offside Front Anti-roll bar linkage pin or bush worn but not resulting in excessive movement top (5.3.4 (a) (i))
  6. Rear Exhaust has a minor leak of exhaust gases box (6.1.2 (a))

Reliability FAQ

On MOT pass rate the Mg B gt (75%) and Mg Mgb mk1 (69%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mg B gt report Full Mg Mgb mk1 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.