MOT History from tests of petrol MG M Gs year 1979

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

mot history

Pass percent:33.33%

(The average a petrol MG M G year 1979 passes without issue)

Based on:36 MOT Tests

Most common failures	No# failures
Service brake: efficiency below requirements \|3.7.B.7\|	7
Parking brake: efficiency below requirements \|3.7.B.7\|	7
Windscreen wiper does not clear the windscreen effectively	5
Headlamp aim out of alignment	5
Exhaust emissions carbon monoxide content excessive \|7.3.B.1a\|	5
Registration plate lamp issues	4
Rear parking brake recording little or no effort	4
Offside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	3
Registration plate issues	3
Exhaust emissions hydrocarbon content excessive \|7.3.B.1b\|	3
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	3
Brake pipe excessively corroded	2
Offside Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	2
Brakes imbalanced across an axle	2
Parking brake lever has no reserve travel \|3.1.6b\|	2
Direction indicators flashing less than 60 times a minute \|1.4.A.2g\|	2
Front Exhaust has a major leak of exhaust gases \|7.1.2\|	2
Nearside Front Steering rack gaiter split \|2.2.D.2d\|	2
Offside Front Steering rack gaiter split \|2.2.D.2d\|	2
Mechanical brake component has restricted free movement	2
Offside Rear Leaf spring splayed and action impaired \|2.4.B.1c\|	2
Direction indicators not working \|1.4.A.2c\|	2
Rear Stop lamp not working \|1.2.1b\|	2
Hazard warning lamps inoperative \|1.4.B.1b\|	2
Offside Rear rear brake recording little or no effort \|3.7.B.5a\|	2
Offside Stop lamp not working \|1.2.1b\|	2
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	2
Parking brake lever releases when knocked \|3.1.6a\|	2
Horn not working \|1.6.2a\|	2
Nearside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	2
Parking brake lever ratchet mechanism is excessively worn \|3.1.5\|	2
Offside Rear Direction indicator not working \|1.4.A.2c\|	2
Nearside Front Headlamp excessively deteriorated so that the light output is severely reduced \|1.7.5a\|	1
Nearside Front Front wheel bearing has excessive play \|2.5.A.3c\|	1
Offside Front Suspension has inadequate clearance with the chassis \|2.4.A.1a\|	1
Nearside Rear Rear position lamp\|s\| adversely affected by the operation of another lamp \|1.1.A.3f\|	1
Nearside Rear Stop lamp adversely affected by the operation of another lamp \|1.2.1f\|	1
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	1
Nearside Seat belt retracting mechanism defective \|5.2.5b\|	1
Offside Seat belt retracting mechanism defective \|5.2.5b\|	1
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	1
Hazard warning lamps not flashing in phase, with ignition on \|1.4.B.1f\|	1
Hazard warning lamps not flashing in phase, with ignition off \|1.4.B.1f\|	1
Hazard warning tell tale not working correctly \|1.4.B.1e\|	1
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	1
Parking brake lever has excessive movement indicating incorrect adjustment \|1.1.6 \|c\|\|	1
Rear Brake hose bulging under pressure \|1.1.12 \|d\|\|	1
Nearside Rear Leaf spring has excessive wear in a shackle pin and/or bush \|2.4.B.2\|	1
Offside Rear Leaf spring has excessive wear in a shackle pin and/or bush \|2.4.B.2\|	1
Offside Front Steering system has excessive free play detected at the steering wheel \|steering rack fitted\| \|2.2.A.1b\|	1
Nearside Rear Exhaust system not adequately supported \|7.1.1\|	1
Offside Front Track rod end ball joint has excessive play \|2.2.B.1f\|	1
Nearside Front brake disc excessively pitted \|3.5.1h\|	1
Offside Front brake disc excessively pitted \|3.5.1h\|	1
Nearside Rear Leaf spring splayed and action impaired \|2.4.B.1c\|	1
Rear Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	1
Nearside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	1
Offside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	1
Offside Rear Access panel cannot be secured in the closed position \|6.4.1\|	1
Nearside Rear rear brake recording little or no effort \|3.7.B.5a\|	1
Offside Headlamp excessively damaged so that the light output is severely reduced \|1.7.5a\|	1
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	1
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	1
Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b))	1
Driver`s seat fore and aft adjustment mechanism not functioning as intended. \|6.2.A.3\|	1
Offside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	1
Windscreen has damage	1
Bonnet retaining device excessively deteriorated \|8.4.2\|	1
Offside Rear Rear reflector excessively damaged so that its function is impaired \|1.5.1c\|	1
Front Brake servo insecurely mounted \|3.6.A.2a\|	1
Nearside Rear Direction indicator not working \|1.4.A.2c\|	1
Hazard warning switch faulty \|1.4.B.1d\|	1
Nearside Front Direction indicator not working \|1.4.A.2c\|	1
Offside Front Obligatory mirror insecure \|8.1.1\|	1
Nearside Rear Leaf spring splayed and fouling \|2.4.B.1c\|	1
Brake pedal has excessive side movement indicating a badly worn bearing or pivot \|3.3.A.1d\|	1
Nearside Rear Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement \|2.4.B.2\|	1
Offside Rear Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement \|2.4.B.2\|	1
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	1
Nearside Front Track rod end loose \|2.2.B.1d\|	1
Driver`s door does not latch securely closed \|6.2.B.1a\|	1
Driver`s door cannot be opened from inside the vehicle \|6.2.B.1b\|	1
Driver`s door cannot be opened from outside the vehicle \|6.2.B.1b\|	1
Parking brake lever has excessive side play in the pivot and may disengage \|3.1.4a\|	1
Nearside Front Steering system has excessive free play detected at the steering wheel \|steering rack fitted\| \|2.2.A.1b\|	1
Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering \|2.5.A.3a\|	1
Nearside Rear Exhaust system not adequately supported mount broken \|7.1.1\|	1
Offside Rear Seat belt anchorage prescribed area is excessively corroded of outer sill area as marked \|5.2.6\|	1
Front Subframe mounting prescribed area is excessively corroded o/s and n/s front as marked various places. \|2.4.A.3\|	1
Nearside Front Subframe mounting prescribed area is excessively corroded castle area as marked \|2.4.A.3\|	1
Offside Front Subframe mounting prescribed area is excessively corroded footwell area as marked \|2.4.A.3\|	1
Rear Subframe mounting prescribed area is excessively corroded axle bump stop mount areas as marked O/S and N/S. \|2.4.A.3\|	1
Nearside Rear Suspension spring mounting prescribed area is excessively corroded Spring hanger mount area as marked \|2.4.A.3\|	1
Offside Rear Suspension spring mounting prescribed area is excessively corroded Spring hanger mount area as marked. \|2.4.A.3\|	1
Rear Parking brake lever has no reserve travel \|3.1.6b\|	1
Centre Front Parking brake lever insecure \|3.1.3b\|	1
Centre Front Parking brake is not capable of being maintained in operation by direct mechanical action only \|3.1.2\|	1
Rear Brake pipe inadequately clipped \|3.6.B.1\|	1
Brake pedal spongy \|3.3.B.1b\|	1
Offside Front Direction indicator not working \|1.4.A.2c\|	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 Anti-roll bar attachment bracket/mounting insecure \|2.4.G.1\|	1
Offside Rear Anti-roll bar attachment bracket/mounting insecure \|2.4.G.1\|	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.

Got suggestions? We’re improving this section all the time. If you have any suggestions, please let us know.

Most common failures	No# failures
Service brake: efficiency below requirements \|3.7.B.7\|	7
Parking brake: efficiency below requirements \|3.7.B.7\|	7
Windscreen wiper does not clear the windscreen effectively	5
Headlamp aim out of alignment	5
Exhaust emissions carbon monoxide content excessive \|7.3.B.1a\|	5
Registration plate lamp issues	4
Rear parking brake recording little or no effort	4
Offside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	3
Registration plate issues	3
Exhaust emissions hydrocarbon content excessive \|7.3.B.1b\|	3
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	3
Brake pipe excessively corroded	2
Offside Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	2
Brakes imbalanced across an axle	2
Parking brake lever has no reserve travel \|3.1.6b\|	2
Direction indicators flashing less than 60 times a minute \|1.4.A.2g\|	2
Front Exhaust has a major leak of exhaust gases \|7.1.2\|	2
Nearside Front Steering rack gaiter split \|2.2.D.2d\|	2
Offside Front Steering rack gaiter split \|2.2.D.2d\|	2
Mechanical brake component has restricted free movement	2
Offside Rear Leaf spring splayed and action impaired \|2.4.B.1c\|	2
Direction indicators not working \|1.4.A.2c\|	2
Rear Stop lamp not working \|1.2.1b\|	2
Hazard warning lamps inoperative \|1.4.B.1b\|	2
Offside Rear rear brake recording little or no effort \|3.7.B.5a\|	2
Offside Stop lamp not working \|1.2.1b\|	2
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	2
Parking brake lever releases when knocked \|3.1.6a\|	2
Horn not working \|1.6.2a\|	2
Nearside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	2
Parking brake lever ratchet mechanism is excessively worn \|3.1.5\|	2
Offside Rear Direction indicator not working \|1.4.A.2c\|	2
Nearside Front Headlamp excessively deteriorated so that the light output is severely reduced \|1.7.5a\|	1
Nearside Front Front wheel bearing has excessive play \|2.5.A.3c\|	1
Offside Front Suspension has inadequate clearance with the chassis \|2.4.A.1a\|	1
Nearside Rear Rear position lamp\|s\| adversely affected by the operation of another lamp \|1.1.A.3f\|	1
Nearside Rear Stop lamp adversely affected by the operation of another lamp \|1.2.1f\|	1
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	1
Nearside Seat belt retracting mechanism defective \|5.2.5b\|	1
Offside Seat belt retracting mechanism defective \|5.2.5b\|	1
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	1
Hazard warning lamps not flashing in phase, with ignition on \|1.4.B.1f\|	1
Hazard warning lamps not flashing in phase, with ignition off \|1.4.B.1f\|	1
Hazard warning tell tale not working correctly \|1.4.B.1e\|	1
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	1
Parking brake lever has excessive movement indicating incorrect adjustment \|1.1.6 \|c\|\|	1
Rear Brake hose bulging under pressure \|1.1.12 \|d\|\|	1
Nearside Rear Leaf spring has excessive wear in a shackle pin and/or bush \|2.4.B.2\|	1
Offside Rear Leaf spring has excessive wear in a shackle pin and/or bush \|2.4.B.2\|	1
Offside Front Steering system has excessive free play detected at the steering wheel \|steering rack fitted\| \|2.2.A.1b\|	1
Nearside Rear Exhaust system not adequately supported \|7.1.1\|	1
Offside Front Track rod end ball joint has excessive play \|2.2.B.1f\|	1
Nearside Front brake disc excessively pitted \|3.5.1h\|	1
Offside Front brake disc excessively pitted \|3.5.1h\|	1
Nearside Rear Leaf spring splayed and action impaired \|2.4.B.1c\|	1
Rear Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	1
Nearside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	1
Offside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	1
Offside Rear Access panel cannot be secured in the closed position \|6.4.1\|	1
Nearside Rear rear brake recording little or no effort \|3.7.B.5a\|	1
Offside Headlamp excessively damaged so that the light output is severely reduced \|1.7.5a\|	1
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	1
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	1
Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b))	1
Driver`s seat fore and aft adjustment mechanism not functioning as intended. \|6.2.A.3\|	1
Offside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	1
Windscreen has damage	1
Bonnet retaining device excessively deteriorated \|8.4.2\|	1
Offside Rear Rear reflector excessively damaged so that its function is impaired \|1.5.1c\|	1
Front Brake servo insecurely mounted \|3.6.A.2a\|	1
Nearside Rear Direction indicator not working \|1.4.A.2c\|	1
Hazard warning switch faulty \|1.4.B.1d\|	1
Nearside Front Direction indicator not working \|1.4.A.2c\|	1
Offside Front Obligatory mirror insecure \|8.1.1\|	1
Nearside Rear Leaf spring splayed and fouling \|2.4.B.1c\|	1
Brake pedal has excessive side movement indicating a badly worn bearing or pivot \|3.3.A.1d\|	1
Nearside Rear Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement \|2.4.B.2\|	1
Offside Rear Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement \|2.4.B.2\|	1
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	1
Nearside Front Track rod end loose \|2.2.B.1d\|	1
Driver`s door does not latch securely closed \|6.2.B.1a\|	1
Driver`s door cannot be opened from inside the vehicle \|6.2.B.1b\|	1
Driver`s door cannot be opened from outside the vehicle \|6.2.B.1b\|	1
Parking brake lever has excessive side play in the pivot and may disengage \|3.1.4a\|	1
Nearside Front Steering system has excessive free play detected at the steering wheel \|steering rack fitted\| \|2.2.A.1b\|	1
Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering \|2.5.A.3a\|	1
Nearside Rear Exhaust system not adequately supported mount broken \|7.1.1\|	1
Offside Rear Seat belt anchorage prescribed area is excessively corroded of outer sill area as marked \|5.2.6\|	1
Front Subframe mounting prescribed area is excessively corroded o/s and n/s front as marked various places. \|2.4.A.3\|	1
Nearside Front Subframe mounting prescribed area is excessively corroded castle area as marked \|2.4.A.3\|	1
Offside Front Subframe mounting prescribed area is excessively corroded footwell area as marked \|2.4.A.3\|	1
Rear Subframe mounting prescribed area is excessively corroded axle bump stop mount areas as marked O/S and N/S. \|2.4.A.3\|	1
Nearside Rear Suspension spring mounting prescribed area is excessively corroded Spring hanger mount area as marked \|2.4.A.3\|	1
Offside Rear Suspension spring mounting prescribed area is excessively corroded Spring hanger mount area as marked. \|2.4.A.3\|	1
Rear Parking brake lever has no reserve travel \|3.1.6b\|	1
Centre Front Parking brake lever insecure \|3.1.3b\|	1
Centre Front Parking brake is not capable of being maintained in operation by direct mechanical action only \|3.1.2\|	1
Rear Brake pipe inadequately clipped \|3.6.B.1\|	1
Brake pedal spongy \|3.3.B.1b\|	1
Offside Front Direction indicator not working \|1.4.A.2c\|	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 Anti-roll bar attachment bracket/mounting insecure \|2.4.G.1\|	1
Offside Rear Anti-roll bar attachment bracket/mounting insecure \|2.4.G.1\|	1

MOT History from tests of petrol MG M Gs year 1979

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