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MOT History from tests of petrol MGB GTs year 1978

Review the list of common MGB GT failures below or to perform a specific mot history check on your MGB then use our popular KnowYourCar service

mot history
Pass percent:64.71%
(The average a petrol MGB GT year 1978 passes without issue)
Based on:17 MOT Tests
Most common failuresNo# failures
Offside Headlamp not working on main beam |1.7.5a|2
Brakes imbalanced across an axle2
Nearside Steering rack gaiter split |2.2.D.2d|1
Position lamp switch missing no side lights not working |1.1.A.1|1
Position lamp switch missing headlamps not working on dip |1.1.A.1|1
rear parking |secondary| brakes imbalanced1
Offside rear brake recording little or no effort |3.7.B.5a|1
Rear parking brake recording little or no effort1
Offside Seat belt insecurely fixed to the vehicles structure |5.2.1a|1
Fuel system component leaking |7.2.3|1
Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Service brake: efficiency below requirements |3.7.B.7|1
Parking brake: efficiency below requirements |3.7.B.7|1
Nearside Windscreen wiper not operating automatically when switched on |8.2.1b|1
Offside Windscreen wiper not operating automatically when switched on |8.2.1b|1
Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|1
Rear brake binding1
Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|1

We get to these numbers by trawling through over 1 billion MOT test results since 2004 and crunched the numbers. We remove anything to do with Tyres, as they are model independent and group together common non-model specific issues. We are trying to get to a picture of what models have what issues.

Please note: We take the data from the DVSA. This data is raw and can contain typos and spelling mistakes that garages may have entered while recording a MOT result. Specifically miss-match on names of models and makes. We are constantly cleaning the data so bear with the odd issue.

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