MOT History from tests of petrol MG Bs year 1975

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

mot history

Pass percent:68.38%

(The average a petrol MG B year 1975 passes without issue)

Based on:5,693 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	291
Exhaust emissions carbon monoxide content excessive \|7.3.B.1a\|	181
Registration plate lamp issues	177
Windscreen wiper does not clear the windscreen effectively	167
Rear brake binding	166
Horn not working \|1.6.2a\|	162
Parking brake: efficiency below requirements \|3.7.B.7\|	158
Brakes imbalanced across an axle	152
Rear parking brake recording little or no effort	114
Exhaust emissions hydrocarbon content excessive \|7.3.B.1b\|	80
Registration plate issues	75
Nearside Steering rack gaiter split \|2.2.D.2d\|	62
Offside Stop lamp not working \|1.2.1b\|	62
Nearside Stop lamp not working \|1.2.1b\|	61
Offside Headlamp not working on dipped beam \|1.7.5a\|	59
Offside Steering rack gaiter split \|2.2.D.2d\|	59
Rear brake application uneven	57
Offside Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	54
Parking brake lever has no reserve travel \|3.1.6b\|	53
Nearside Headlamp not working on dipped beam \|1.7.5a\|	49
Brake pipe excessively corroded	47
Brake hose excessively deteriorated	47
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	47
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	46
Direction indicators not working \|1.4.A.2c\|	41
Offside Headlamp not working on main beam \|1.7.5a\|	38
Nearside Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	38
Service brake: efficiency below requirements \|3.7.B.7\|	37
Fuel system component leaking \|7.2.3\|	36
Hazard warning switch faulty \|1.4.B.1d\|	34
Nearside Headlamp not working on main beam \|1.7.5a\|	32
Direction indicators flashing less than 60 times a minute \|1.4.A.2g\|	32
Nearside Front Steering rack gaiter split \|2.2.D.2d\|	31
Battery insecure \|1.9.1\|	30
Hazard warning lamps not flashing in phase, with ignition on \|1.4.B.1f\|	28
Nearside front brake binding \|3.7.B.1\|	28
Offside Front Steering rack gaiter split \|2.2.D.2d\|	27
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	25
Stop lamp not working \|1.2.1b\|	25
Offside front brake binding \|3.7.B.1\|	24
Windscreen washer not working	24
Hazard warning lamps not flashing in phase, with ignition off \|1.4.B.1f\|	23
Offside Front Direction indicator not working \|1.4.A.2c\|	23
Nearside Front Direction indicator not working \|1.4.A.2c\|	23
Stop lamp remains on when the brakes are released	22
Nearside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	22
Nearside rear brake recording little or no effort \|3.7.B.5a\|	22
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	22
Rear Exhaust system not adequately supported \|7.1.1\|	21
Nearside Rear Shock absorber has a serious fluid leak \|2.7.3\|	21
Driver`s seat insecure \|6.2.A.1\|	21
Offside Rear Shock absorber has a serious fluid leak \|2.7.3\|	21
All position lamps not working \|1.1.A.3b\|	20
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	20
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	19
Offside rear brake recording little or no effort \|3.7.B.5a\|	18
Offside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	17
Exhaust has a major leak of exhaust gases \|7.1.2\|	17
Nearside Front Shock absorber has a serious fluid leak \|2.7.3\|	16
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	16
Hazard warning lamps inoperative \|1.4.B.1b\|	16
Nearside Rear Stop lamp not working \|1.2.1b\|	15
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	15
Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b))	15
Rear Mechanical brake component has restricted free movement	15
Nearside Front Headlamp not working on main beam \|1.7.5a\|	14
Front brake application uneven	14
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	14
Offside Front Headlamp not working on dipped beam \|1.7.5a\|	14
Nearside Rear rear brake recording little or no effort \|3.7.B.5a\|	14
Windscreen has damage	13
Headlamp switch faulty \|1.7.1\|	13
Offside Front Shock absorber has a serious fluid leak \|2.7.3\|	13
Nearside Front wheel bearing has excessive play \|2.5.A.3c\|	13
Front Exhaust has a major leak of exhaust gases \|7.1.2\|	13
Offside Front front brake binding \|3.7.B.1\|	12
Offside Rear Stop lamp not working \|1.2.1b\|	12
Offside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering \|2.5.A.3a\|	12
Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering \|2.5.A.3a\|	12
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	12
Offside Rear Braking system leaking \|3.6.A.1\|	12
Front Windscreen wiper not operating automatically when switched on \|8.2.1b\|	11
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	11
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	11
Horn not working \|7.7 \|a\| \|ii\|\|	11
Brake pedal anti-slip provision missing \|3.3.A.1b\|	11
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	11
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	11
Offside Front Headlamp not working on main beam \|1.7.5a\|	10
Offside Front Vehicle structure has excessive corrosion which adversely affects braking or steering \|6.1.A.1\|	10
Offside Front wheel bearing has excessive play \|2.5.A.3c\|	10
Nearside Rear Direction indicator not working \|1.4.A.2c\|	10
Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii))	10
Hazard warning tell tale not working correctly \|1.4.B.1e\|	10
Brake hose has insufficient room to move	10
Brake master cylinder/servo mounting prescribed area is excessively corroded \|3.6.C.3\|	10
Offside Rear rear brake recording little or no effort \|3.7.B.5a\|	9
Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	9
Steering wheel retaining device insecure \|2.1.6\|	9
Exhaust engine idle speed too high \|7.3.A.2a\|	9
Offside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	9
Mechanical brake component has restricted free movement	9
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	9
Nearside Front Shock absorber has negligible damping effect \|2.7.5\|	8
Nearside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	8
Nearside Front Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	8
Windscreen wiper blade insecure	8
Offside Front Brake master cylinder/servo mounting prescribed area is excessively corroded \|3.6.C.3\|	8
Fuel pipe leaking \|7.2.3\|	8
Nearside Headlamp insecure \|1.7.3\|	8
Offside Front Position lamp not working (4.2.1 (a) (ii))	8
Nearside Front front brake binding \|3.7.B.1\|	8
Exhaust system not adequately supported \|7.1.1\|	8
Offside Rear Direction indicator not working \|1.4.A.2c\|	8
Nearside Front Direction indicators not working \|1.4.A.2c\|	8
Offside Seat belt insecurely fixed to the vehicles structure \|5.2.1a\|	7
Nearside Seat belt insecurely fixed to the vehicles structure \|5.2.1a\|	7
Headlamp not working on main beam \|1.7.5a\|	7
Offside Front Direction indicators not working \|1.4.A.2c\|	7
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	7
Rear Stop lamp not working \|1.2.1b\|	7
Horn not working (7.7 (a) (ii))	7
Nearside Front Front wheel bearing has excessive play \|2.5.A.3c\|	7
Nearside Front Position lamp not working (4.2.1 (a) (ii))	7
Nearside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	7
Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	7
Offside Front Front wheel bearing has excessive play \|2.5.A.3c\|	7
Nearside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	6
Offside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	6
Offside Front Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	6
Direction indicators flashing more than 120 times a minute \|1.4.A.2g\|	6
Nearside Front Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	6
Offside Rear Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	6
Steering wheel locking device insecure \|2.1.6\|	6
Offside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	6
Offside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	6
Nearside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	6
Offside Front wheel bearing rough when rotated \|2.5.A.2\|	6
Offside Obligatory mirror missing \|8.1.1\|	6
Brake performance not tested \|3.7.A.1\|	6
Brake servo vacuum pipe collapsed \|3.6.C.1b\|	6
Offside Front Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	6
Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	6
All direction indicators not working (4.4.1 (a) (ii))	6
Nearside Rear Brake pipe inadequately clipped \|3.6.B.1\|	6
Offside Front Brake pipe inadequately clipped \|3.6.B.1\|	6
Offside Direction indicator not working \|1.4.A.2c\|	6
Nearside Rear Braking system leaking \|3.6.A.1\|	6
Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	6
Brake pedal spongy \|3.3.B.1b\|	6
Indicator switch faulty \|1.4.A.1\|	6
Exhaust emissions carbon monoxide content excessive \|8.2.1.2 \|b\|\|	6

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
Headlamp aim out of alignment	291
Exhaust emissions carbon monoxide content excessive \|7.3.B.1a\|	181
Registration plate lamp issues	177
Windscreen wiper does not clear the windscreen effectively	167
Rear brake binding	166
Horn not working \|1.6.2a\|	162
Parking brake: efficiency below requirements \|3.7.B.7\|	158
Brakes imbalanced across an axle	152
Rear parking brake recording little or no effort	114
Exhaust emissions hydrocarbon content excessive \|7.3.B.1b\|	80
Registration plate issues	75
Nearside Steering rack gaiter split \|2.2.D.2d\|	62
Offside Stop lamp not working \|1.2.1b\|	62
Nearside Stop lamp not working \|1.2.1b\|	61
Offside Headlamp not working on dipped beam \|1.7.5a\|	59
Offside Steering rack gaiter split \|2.2.D.2d\|	59
Rear brake application uneven	57
Offside Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	54
Parking brake lever has no reserve travel \|3.1.6b\|	53
Nearside Headlamp not working on dipped beam \|1.7.5a\|	49
Brake pipe excessively corroded	47
Brake hose excessively deteriorated	47
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	47
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	46
Direction indicators not working \|1.4.A.2c\|	41
Offside Headlamp not working on main beam \|1.7.5a\|	38
Nearside Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	38
Service brake: efficiency below requirements \|3.7.B.7\|	37
Fuel system component leaking \|7.2.3\|	36
Hazard warning switch faulty \|1.4.B.1d\|	34
Nearside Headlamp not working on main beam \|1.7.5a\|	32
Direction indicators flashing less than 60 times a minute \|1.4.A.2g\|	32
Nearside Front Steering rack gaiter split \|2.2.D.2d\|	31
Battery insecure \|1.9.1\|	30
Hazard warning lamps not flashing in phase, with ignition on \|1.4.B.1f\|	28
Nearside front brake binding \|3.7.B.1\|	28
Offside Front Steering rack gaiter split \|2.2.D.2d\|	27
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	25
Stop lamp not working \|1.2.1b\|	25
Offside front brake binding \|3.7.B.1\|	24
Windscreen washer not working	24
Hazard warning lamps not flashing in phase, with ignition off \|1.4.B.1f\|	23
Offside Front Direction indicator not working \|1.4.A.2c\|	23
Nearside Front Direction indicator not working \|1.4.A.2c\|	23
Stop lamp remains on when the brakes are released	22
Nearside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	22
Nearside rear brake recording little or no effort \|3.7.B.5a\|	22
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	22
Rear Exhaust system not adequately supported \|7.1.1\|	21
Nearside Rear Shock absorber has a serious fluid leak \|2.7.3\|	21
Driver`s seat insecure \|6.2.A.1\|	21
Offside Rear Shock absorber has a serious fluid leak \|2.7.3\|	21
All position lamps not working \|1.1.A.3b\|	20
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	20
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	19
Offside rear brake recording little or no effort \|3.7.B.5a\|	18
Offside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	17
Exhaust has a major leak of exhaust gases \|7.1.2\|	17
Nearside Front Shock absorber has a serious fluid leak \|2.7.3\|	16
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	16
Hazard warning lamps inoperative \|1.4.B.1b\|	16
Nearside Rear Stop lamp not working \|1.2.1b\|	15
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	15
Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b))	15
Rear Mechanical brake component has restricted free movement	15
Nearside Front Headlamp not working on main beam \|1.7.5a\|	14
Front brake application uneven	14
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	14
Offside Front Headlamp not working on dipped beam \|1.7.5a\|	14
Nearside Rear rear brake recording little or no effort \|3.7.B.5a\|	14
Windscreen has damage	13
Headlamp switch faulty \|1.7.1\|	13
Offside Front Shock absorber has a serious fluid leak \|2.7.3\|	13
Nearside Front wheel bearing has excessive play \|2.5.A.3c\|	13
Front Exhaust has a major leak of exhaust gases \|7.1.2\|	13
Offside Front front brake binding \|3.7.B.1\|	12
Offside Rear Stop lamp not working \|1.2.1b\|	12
Offside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering \|2.5.A.3a\|	12
Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering \|2.5.A.3a\|	12
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	12
Offside Rear Braking system leaking \|3.6.A.1\|	12
Front Windscreen wiper not operating automatically when switched on \|8.2.1b\|	11
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	11
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	11
Horn not working \|7.7 \|a\| \|ii\|\|	11
Brake pedal anti-slip provision missing \|3.3.A.1b\|	11
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	11
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	11
Offside Front Headlamp not working on main beam \|1.7.5a\|	10
Offside Front Vehicle structure has excessive corrosion which adversely affects braking or steering \|6.1.A.1\|	10
Offside Front wheel bearing has excessive play \|2.5.A.3c\|	10
Nearside Rear Direction indicator not working \|1.4.A.2c\|	10
Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii))	10
Hazard warning tell tale not working correctly \|1.4.B.1e\|	10
Brake hose has insufficient room to move	10
Brake master cylinder/servo mounting prescribed area is excessively corroded \|3.6.C.3\|	10
Offside Rear rear brake recording little or no effort \|3.7.B.5a\|	9
Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	9
Steering wheel retaining device insecure \|2.1.6\|	9
Exhaust engine idle speed too high \|7.3.A.2a\|	9
Offside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	9
Mechanical brake component has restricted free movement	9
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	9
Nearside Front Shock absorber has negligible damping effect \|2.7.5\|	8
Nearside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	8
Nearside Front Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	8
Windscreen wiper blade insecure	8
Offside Front Brake master cylinder/servo mounting prescribed area is excessively corroded \|3.6.C.3\|	8
Fuel pipe leaking \|7.2.3\|	8
Nearside Headlamp insecure \|1.7.3\|	8
Offside Front Position lamp not working (4.2.1 (a) (ii))	8
Nearside Front front brake binding \|3.7.B.1\|	8
Exhaust system not adequately supported \|7.1.1\|	8
Offside Rear Direction indicator not working \|1.4.A.2c\|	8
Nearside Front Direction indicators not working \|1.4.A.2c\|	8
Offside Seat belt insecurely fixed to the vehicles structure \|5.2.1a\|	7
Nearside Seat belt insecurely fixed to the vehicles structure \|5.2.1a\|	7
Headlamp not working on main beam \|1.7.5a\|	7
Offside Front Direction indicators not working \|1.4.A.2c\|	7
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	7
Rear Stop lamp not working \|1.2.1b\|	7
Horn not working (7.7 (a) (ii))	7
Nearside Front Front wheel bearing has excessive play \|2.5.A.3c\|	7
Nearside Front Position lamp not working (4.2.1 (a) (ii))	7
Nearside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	7
Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	7
Offside Front Front wheel bearing has excessive play \|2.5.A.3c\|	7
Nearside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	6
Offside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	6
Offside Front Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	6
Direction indicators flashing more than 120 times a minute \|1.4.A.2g\|	6
Nearside Front Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	6
Offside Rear Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	6
Steering wheel locking device insecure \|2.1.6\|	6
Offside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	6
Offside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	6
Nearside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	6
Offside Front wheel bearing rough when rotated \|2.5.A.2\|	6
Offside Obligatory mirror missing \|8.1.1\|	6
Brake performance not tested \|3.7.A.1\|	6
Brake servo vacuum pipe collapsed \|3.6.C.1b\|	6
Offside Front Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	6
Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	6
All direction indicators not working (4.4.1 (a) (ii))	6
Nearside Rear Brake pipe inadequately clipped \|3.6.B.1\|	6
Offside Front Brake pipe inadequately clipped \|3.6.B.1\|	6
Offside Direction indicator not working \|1.4.A.2c\|	6
Nearside Rear Braking system leaking \|3.6.A.1\|	6
Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	6
Brake pedal spongy \|3.3.B.1b\|	6
Indicator switch faulty \|1.4.A.1\|	6
Exhaust emissions carbon monoxide content excessive \|8.2.1.2 \|b\|\|	6

MOT History from tests of petrol MG Bs year 1975

Find us on Facebook