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MOT reliability

Mg Mgb coupe

7 vehicles · 63 completed MOT tests analysed
75%
MOT pass rate

Based on 7 Mg Mgb coupe vehicles and 63 completed MOT tests, the Mg Mgb coupe has an overall 75% pass rate, with an average recorded mileage of 50,474 miles.

7
Vehicles
63
MOT tests
552
Avg miles / year
1.1
Faults per test
3%
Dangerous-fault share

Mg Mgb coupe problem areas

Where faults occur most across all Mg Mgb coupe MOT tests:

  • Other106%
  • Seatbelts & equipment10%
  • Brakes9%
  • Tyres, wheels & suspension6%
  • Steering4%
  • Emissions & nuisance1%
  • Body & structure1%
  • Visibility1%

Fuel types: Petrol (7)

Most common Mg Mgb coupe MOT faults

These are the faults and advisories recorded most often across Mg Mgb coupe MOT tests:

  1. Parking brake: efficiency below requirements (3.7.B.7) (4 times)
  2. Nearside Front Brake pad(s) wearing thin (3.5.1g) (3 times)
  3. Offside rear parking brake recording little or no effort (3.7.B.6a) (3 times)
  4. Rear Exhaust has a major leak of exhaust gases (7.1.2) (2 times)
  5. top u/j joint in streeing shaht worn (2 times)
  6. both front king pins slight play (2 times)
  7. front nearside tyre wall small splits (2 times)
  8. both front kingpins slight play (2 times)
  9. front nearside tyre walls small splits (2 times)
  10. rear offside underwing forward arch area corroded (2 times)
  11. Nearside Front Shock absorber has a light misting of oil (2.7.3) (2 times)
  12. both front kingpins slight play in thrust (2 times)
  13. rear offside underwing forward lower closing panel holed (2 times)
  14. Exhaust has a minor leak of exhaust gases centre silencer at both joints (7.1.2) (2 times)
  15. Nearside Front lower trunnion to arm pin has slight movement (2 times)

Mg Mgb coupe pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
1974 2 16 50% 69,895
1973 1 5 100% 31,158
1972 3 38 82% 43,966
1970 1 4 75% —

Mg Mgb coupe reliability FAQ

Across 7 Mg Mgb coupe vehicles in our MOT data, 75% pass the MOT (a 25% failure rate), with about 1.1 faults or advisories recorded per test.

The most frequently recorded Mg Mgb coupe MOT issues are: Parking brake: efficiency below requirements (3.7.B.7); Nearside Front Brake pad(s) wearing thin (3.5.1g); Offside rear parking brake recording little or no effort (3.7.B.6a).

The typical Mg Mgb coupe in our data has covered around 50,474 miles.

Compare the Mg Mgb coupe

See how the Mg Mgb coupe stacks up against other Mg models on MOT reliability:

Mgb coupe vs Metro Mgb coupe vs B gt Mgb coupe vs Mgf Mgb coupe vs Zs

Check a specific Mg Mgb coupe

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See all Mg models · Learn about common MOT failures · what an MOT checks