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MOT History from tests of petrol MG BGTs year 1979

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

mot history
Pass percent:61.50%
(The average a petrol MG BGT year 1979 passes without issue)
Based on:1,122 MOT Tests
Most common failuresNo# failures
Exhaust emissions carbon monoxide content excessive |7.3.B.1a|98
Headlamp aim out of alignment88
Exhaust emissions hydrocarbon content excessive |7.3.B.1b|54
Registration plate lamp issues53
Windscreen wiper does not clear the windscreen effectively37
Rear brake binding32
Brakes imbalanced across an axle32
Rear parking brake recording little or no effort27
Parking brake: efficiency below requirements |3.7.B.7|26
Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|24
Horn not working |1.6.2a|23
Brake pipe excessively corroded23
Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|21
Nearside Steering rack gaiter split |2.2.D.2d|18
Offside Steering rack gaiter split |2.2.D.2d|15
Offside Stop lamp not working |1.2.1b|14
Brake hose excessively deteriorated13
Rear brake application uneven12
Offside Front Steering rack gaiter split |2.2.D.2d|12
Hazard warning switch faulty |1.4.B.1d|12
Exhaust emissions carbon monoxide content excessive |8.2.1.2 |b||12
Parking brake lever has no reserve travel |3.1.6b|11
Nearside Headlamp not working on dipped beam |1.7.5a|11
Registration plate issues10
Hazard warning lamps inoperative |1.4.B.1b|10
Nearside Stop lamp not working |1.2.1b|10
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))10
Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6|10
Fuel system component leaking |7.2.3|9
Service brake: efficiency below requirements |3.7.B.7|9
Nearside Front Steering rack gaiter split |2.2.D.2d|9
Nearside Front position lamp|s| not working |1.1.A.3b|9
Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|9
Offside Front position lamp|s| not working |1.1.A.3b|9
Offside Headlamp not working on dipped beam |1.7.5a|9
Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|8
Rear Exhaust system not adequately supported |7.1.1|8
Offside Headlamp not working on main beam |1.7.5a|8
Nearside Rear Braking system leaking |3.6.A.1|8
Centre Exhaust has a major leak of exhaust gases |7.1.2|7
Battery insecure |1.9.1|7
Nearside Rear position lamp|s| not working |1.1.A.3b|7
Direction indicators not working |1.4.A.2c|7
Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6|7
Nearside Front Direction indicator not working |1.4.A.2c|7
Rear Mechanical brake component has restricted free movement7
Exhaust has a major leak of exhaust gases |7.1.2|6
Nearside Front Shock absorber has a serious fluid leak |2.7.3|6
Offside Rear position lamp|s| not working |1.1.A.3b|6
Direction indicators flashing less than 60 times a minute |1.4.A.2g|6
Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f|6
Front brake application uneven6
Offside Rear Shock absorber has a serious fluid leak |2.7.3|5
Centre Exhaust system not adequately supported |7.1.1|5
Offside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a|5
Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|5
Offside Front Shock absorber has a serious fluid leak |2.7.3|5
All position lamps not working |1.1.A.3b|5
Offside Front Direction indicator not working |1.4.A.2c|5
Nearside Headlamp not working on main beam |1.7.5a|5
Nearside Rear rear brake recording little or no effort |3.7.B.5a|5
Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|5
Nearside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2|4
Offside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2|4
Offside Rear Service brake excessively binding |1.2.1 |f||4
Offside Front wheel bearing rough when rotated |2.5.A.2|4
Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|4
Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|4
Nearside Front Front position lamp|s| not working |1.1.A.3b|4
Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a|4
Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f|4
Front Exhaust has a major leak of exhaust gases |7.1.2|4
Offside Obligatory mirror missing |8.1.1|4
Nearside Rear Shock absorber has a serious fluid leak |2.7.3|4
Stop lamp not working |1.2.1b|4
Rear Brake hose bulging under pressure |3.6.B.3|4
Offside Front Shock absorber has negligible damping effect |2.7.5|4
Exhaust system not adequately supported |7.1.1|4
Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6|4
Offside Front Front position lamp|s| not working |1.1.A.3b|4
Nearside Rear wheel bearing has excessive play |2.6.2|3
Offside Rear wheel bearing has excessive play |2.6.2|3
Position lamp switch faulty |1.1.A.1|3
Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a|3
Nearside Track rod end ball joint has excessive play |2.2.B.1f|3
Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|3
Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b|3
Emissions not tested |7.0|3
Nearside Front Shock absorber has negligible damping effect |2.7.5|3
Nearside Rear Leaf spring anchor bracket corroded and seriously weakened |2.4.B.6d|3
Offside Rear Rear position lamp|s| not working |1.1.A.3b|3
Exhaust emissions hydrocarbon content excessive |8.2.1.2 |b||3
Offside Steering rack gaiter insecure |2.2.D.2d|3
Rear Exhaust has a major leak of exhaust gases |7.1.2|3
Nearside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6|3
Offside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6|3
Offside rear brake recording little or no effort |3.7.B.5a|3
Offside Front Brake master cylinder/servo mounting prescribed area is excessively corroded |3.6.C.3|3
Rear Brake hose leaking |3.6.A.1|3
Nearside rear brake recording little or no effort |3.7.B.5a|3
Nearside Front wheel bearing has excessive play |2.5.A.3c|3
Nearside Front Seat belt locking mechanism does not secure or release |5.2.5a|3
Offside Rear Leaf spring has excessive wear in a shackle pin and/or bush |2.4.B.2|3
Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|3
Nearside Rear Service brake excessively binding (1.2.1 (f))3
Brake performance not tested |3.7.A.1|3
Nearside Rear Service brake effort inadequate at a wheel |1.2.1 |a| |i||2
Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|2
Steering system excessively tight |2.2.D.1|2
Offside brake disc has restricted free movement |3.5.1j|2
Seat belt anchorage prescribed area is excessively corroded |5.2.6|2
Offside Outer Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|2
Brake servo vacuum pipe collapsed |3.6.C.1b|2
Offside Front Brake pipe inadequately clipped |3.6.B.1|2
Front Direction indicators not working |1.4.A.2c|2
Rear Direction indicators not working |1.4.A.2c|2
Nearside Rear Brake pipe inadequately clipped |3.6.B.1|2
Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a|2
Offside Front Direction indicator not working |4.4.1 |a| |ii||2
Offside Front Headlamp not in good working order |not working| |1.2.4a|2
Nearside Steering rack gaiter insecure |2.2.D.2d|2
Front passenger door cannot be opened from inside the vehicle |6.2.B.1b|2
Offside Windscreen wiper blade deteriorated |8.2.2|2
Parking brake efficiency below requirements |1.4.2 |a| |i||2
Nearside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|2
Offside Front Steering arm has relative movement at its fixings |2.2.B.1h|2
Nearside Rear brake drum contaminated by brake fluid |3.5.1h|2
Offside Headlamp does not operate immediately when selected on main beam |1.7.4a|2
Offside Rear Leaf spring anchor bracket corroded and seriously weakened |2.4.B.6d|2
Nearside Rear Stop lamp not working |1.2.1b|2
Offside Rear Stop lamp not working |1.2.1b|2
Offside Rear Direction indicator not working |1.4.A.2c|2
Nearside Front suspension has excessive play in a pin or bush of a lower wishbone inner bearing |2.5.B.1a|2
Nearside Front suspension has excessive play in a pin or bush of an upper wishbone inner bearing |2.5.B.1a|2
Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a|2
Nearside Front Lower Suspension arm has excessive play in a pin/bush |2.4.G.2|2
Nearside Front Headlamp not working on dipped beam |1.7.5a|2
Nearside Front Headlamp not working on main beam |1.7.5a|2
Nearside Inner Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|2
Windscreen washer not working 2
Rear Stop lamp not working |1.2.1b|2
Offside Front Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|2
Speedometer cannot be illuminated. |6.7.3|2
Offside rear brake excessively fluctuating |3.7.B.3|2
Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b|2
Nearside Rear Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement |2.4.B.2|2
Offside Headlamp aim not tested |1.8.A.1c|2
Offside Rear Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement |2.4.B.2|2
Steering system excessively rough |2.2.D.1|2
Offside Rear Service brake excessively binding (1.2.1 (f))2
Nearside Front Front wheel bearing rough when rotated |2.5.A.2|2
Brake hose damaged2
Offside Front Steering component mounting prescribed area is excessively corroded |2.2.C.1h|2
Offside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Nearside Front Service brake excessively fluctuating (1.2.1 (e))2
Centre Rear Brake hose leaking |3.6.A.1|2
Offside Rear Fluid suspension unit leaking |2.4.D.2|2
Offside Rear Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|2
Nearside Front brake disc excessively pitted |3.5.1h|2
Nearside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c|2
Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6|2

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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