MOT History from tests of petrol MG Bs year 1973

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:74.42%

(The average a petrol MG B year 1973 passes without issue)

Based on:8,111 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	311
Registration plate lamp issues	247
Parking brake: efficiency below requirements \|3.7.B.7\|	208
Windscreen wiper does not clear the windscreen effectively	170
Horn not working \|1.6.2a\|	156
Rear brake binding	155
Brakes imbalanced across an axle	151
Rear parking brake recording little or no effort	119
Nearside Stop lamp not working \|1.2.1b\|	102
Offside Stop lamp not working \|1.2.1b\|	94
Rear brake application uneven	76
Registration plate issues	75
Offside Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	63
Offside Steering rack gaiter split \|2.2.D.2d\|	55
Nearside Headlamp not working on dipped beam \|1.7.5a\|	55
Fuel system component leaking \|7.2.3\|	55
Nearside Steering rack gaiter split \|2.2.D.2d\|	52
Offside Headlamp not working on dipped beam \|1.7.5a\|	48
Nearside Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	47
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	46
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	44
Offside Headlamp not working on main beam \|1.7.5a\|	44
Brake hose excessively deteriorated	35
Nearside Headlamp not working on main beam \|1.7.5a\|	35
Offside front brake binding \|3.7.B.1\|	34
Service brake: efficiency below requirements \|3.7.B.7\|	31
Brake pipe excessively corroded	31
Nearside rear brake recording little or no effort \|3.7.B.5a\|	28
Direction indicators flashing less than 60 times a minute \|1.4.A.2g\|	28
Nearside front brake binding \|3.7.B.1\|	27
Nearside Rear Stop lamp not working \|1.2.1b\|	26
Parking brake lever has no reserve travel \|3.1.6b\|	26
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	25
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	25
Offside Rear Stop lamp not working \|1.2.1b\|	24
Nearside Front Steering rack gaiter split \|2.2.D.2d\|	24
Windscreen washer not working	24
Rear Exhaust system not adequately supported \|7.1.1\|	23
Driver`s seat insecure \|6.2.A.1\|	23
Offside rear brake recording little or no effort \|3.7.B.5a\|	23
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	22
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	22
Offside Rear Direction indicator not working \|1.4.A.2c\|	22
Exhaust has a major leak of exhaust gases \|7.1.2\|	21
Stop lamp not working \|1.2.1b\|	20
Offside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	20
Rear Mechanical brake component has restricted free movement	20
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	20
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	19
Offside Front Direction indicator not working \|1.4.A.2c\|	19
Battery insecure \|1.9.1\|	18
Centre Exhaust system not adequately supported \|7.1.1\|	18
Offside Front Steering rack gaiter split \|2.2.D.2d\|	17
Nearside Front wheel bearing rough when rotated \|2.5.A.2\|	17
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	17
Nearside Windscreen wiper not operating automatically when switched on \|8.2.1b\|	17
Offside Windscreen wiper not operating automatically when switched on \|8.2.1b\|	17
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	17
Direction indicators not working \|1.4.A.2c\|	16
Parking brake efficiency below requirements (1.4.2 (a) (i))	16
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	16
Nearside Rear Shock absorber has a serious fluid leak \|2.7.3\|	15
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	13
Horn not working (7.7 (a))	13
Offside Front Headlamp not working on dipped beam \|1.7.5a\|	13
Nearside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	13
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	12
Nearside Front wheel bearing has excessive play \|2.5.A.3c\|	12
Nearside Front Direction indicator not working \|1.4.A.2c\|	12
Offside Front wheel bearing rough when rotated \|2.5.A.2\|	12
Offside Front wheel bearing has excessive play \|2.5.A.3c\|	12
Hazard warning switch faulty \|1.4.B.1d\|	12
Offside Rear Shock absorber has a serious fluid leak \|2.7.3\|	12
Exhaust system not adequately supported \|7.1.1\|	11
Mechanical brake component has restricted free movement	11
Brake pedal anti-slip provision missing \|3.3.A.1b\|	11
Offside Front Shock absorber has a serious fluid leak \|2.7.3\|	11
Nearside Rear Braking system leaking \|3.6.A.1\|	11
Centre Exhaust has a major leak of exhaust gases \|7.1.2\|	11
Headlamp switch faulty \|1.7.1\|	11
Brake hose has insufficient room to move	11
Offside Rear Braking system leaking \|3.6.A.1\|	11
Front Exhaust has a major leak of exhaust gases \|7.1.2\|	10
All position lamps not working \|1.1.A.3b\|	10
Offside Rear Wheel insecure \|4.2.A.1c\|	10
Nearside Front Shock absorber has a serious fluid leak \|2.7.3\|	10
Offside Front Brake master cylinder/servo mounting prescribed area is excessively corroded \|3.6.C.3\|	10
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	10
Nearside Front front brake binding \|3.7.B.1\|	10
Front Windscreen wiper not operating automatically when switched on \|8.2.1b\|	10
Offside Rear rear brake recording little or no effort \|3.7.B.5a\|	10
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
Front brake application uneven	9
Fuel tank leaking \|7.2.3\|	9
Offside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	9
Fuel pipe leaking \|7.2.3\|	9
Nearside Rear Direction indicator not working \|1.4.A.2c\|	9
rear brakes release unevenly \|3.7.B.4\|	9
Speedometer cannot be illuminated. \|6.7.3\|	9
Offside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering \|2.5.A.3a\|	8
Offside Rear Position lamp not working (4.2.1 (a) (ii))	8
Offside Rear wheel bearing has excessive play \|2.6.2\|	8
Horn not working \|7.7 \|a\| \|ii\|\|	8
Parking brake: efficiency below requirements \|3.7.C.1b\|	8
Offside Headlamp not working on dipped beam (4.1.1 (a) (ii))	8
Steering wheel retaining device insecure \|2.1.6\|	8
Hazard warning lamps inoperative \|1.4.B.1b\|	8
Nearside Front Position lamp not working (4.2.1 (a) (ii))	7
Steering column movement between the shaft and steering wheel \|2.1.2b\|	7
Windscreen has damage	7
Hazard warning lamps not flashing in phase, with ignition on \|1.4.B.1f\|	7
Fuel pipe union leaking \|7.2.3\|	7
Nearside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	7
Nearside Headlamp insecure \|1.7.3\|	7
Offside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	7
Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	7
Nearside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	7
Offside Front Headlamp not working on main beam \|1.7.5a\|	7
Nearside Front Shock absorber has negligible damping effect \|2.7.5\|	7
Offside Front Front wheel bearing rough when rotated \|2.5.A.2\|	7
Horn not working (7.7 (a) (ii))	7
Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering \|2.5.A.3a\|	7
Offside Front front brake binding \|3.7.B.1\|	7
Nearside Front Headlamp not working on main beam \|1.7.5a\|	7
Main beam `tell-tale` not working \|1.7.4c\|	7
Offside Front Front wheel bearing has excessive play \|2.5.A.3c\|	7
Front passenger seat insecure \|6.2.3\|	7

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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MOT History from tests of petrol MG Bs year 1973

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