MOT History from tests of petrol MG B GTs year 1979

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

mot history

Pass percent:61.62%

(The average a petrol MG B GT year 1979 passes without issue)

Based on:7,219 MOT Tests

Most common failures	No# failures
Exhaust emissions carbon monoxide content excessive \|7.3.B.1a\|	562
Headlamp aim out of alignment	489
Registration plate lamp issues	295
Windscreen wiper does not clear the windscreen effectively	291
Rear brake binding	287
Exhaust emissions hydrocarbon content excessive \|7.3.B.1b\|	275
Parking brake: efficiency below requirements \|3.7.B.7\|	229
Rear parking brake recording little or no effort	206
Brakes imbalanced across an axle	185
Offside Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	166
Nearside Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	161
Horn not working \|1.6.2a\|	152
Brake pipe excessively corroded	148
Offside Steering rack gaiter split \|2.2.D.2d\|	98
Parking brake lever has no reserve travel \|3.1.6b\|	98
Nearside Steering rack gaiter split \|2.2.D.2d\|	97
Brake hose excessively deteriorated	93
Registration plate issues	87
Rear brake application uneven	82
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	81
Service brake: efficiency below requirements \|3.7.B.7\|	80
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	74
Offside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	69
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	65
Direction indicators not working \|1.4.A.2c\|	62
Nearside Stop lamp not working \|1.2.1b\|	60
Offside Stop lamp not working \|1.2.1b\|	60
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	55
Nearside Headlamp not working on dipped beam \|1.7.5a\|	54
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	53
Hazard warning lamps not flashing in phase, with ignition off \|1.4.B.1f\|	53
Hazard warning lamps not flashing in phase, with ignition on \|1.4.B.1f\|	52
Nearside Headlamp not working on main beam \|1.7.5a\|	52
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	51
Nearside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	50
Hazard warning switch faulty \|1.4.B.1d\|	50
Fuel system component leaking \|7.2.3\|	48
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	47
Offside Front Shock absorber has a serious fluid leak \|2.7.3\|	45
Nearside rear brake recording little or no effort \|3.7.B.5a\|	44
Offside Headlamp not working on main beam \|1.7.5a\|	43
Nearside Front Shock absorber has a serious fluid leak \|2.7.3\|	42
Direction indicators flashing less than 60 times a minute \|1.4.A.2g\|	42
Centre Exhaust system not adequately supported \|7.1.1\|	41
Offside Front Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	39
Offside Headlamp not working on dipped beam \|1.7.5a\|	37
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	35
Offside rear brake recording little or no effort \|3.7.B.5a\|	34
Exhaust has a major leak of exhaust gases \|7.1.2\|	34
Hazard warning lamps inoperative \|1.4.B.1b\|	33
Nearside Rear Stop lamp not working \|1.2.1b\|	33
Front Exhaust has a major leak of exhaust gases \|7.1.2\|	32
Rear Exhaust system not adequately supported \|7.1.1\|	31
Offside Front Steering rack gaiter split \|2.2.D.2d\|	31
Nearside Rear Shock absorber has a serious fluid leak \|2.7.3\|	31
All position lamps not working \|1.1.A.3b\|	30
Offside Front Direction indicator not working \|1.4.A.2c\|	30
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	30
Exhaust emissions carbon monoxide content excessive \|8.2.1.2 \|b\|\|	29
Offside Rear Stop lamp not working \|1.2.1b\|	29
Nearside Front Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	28
Battery insecure \|1.9.1\|	28
Offside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering \|2.5.A.3a\|	27
Nearside Front Steering rack gaiter split \|2.2.D.2d\|	27
Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	27
Rear Mechanical brake component has restricted free movement	27
Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	26
Offside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	25
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	25
Offside Rear Shock absorber has a serious fluid leak \|2.7.3\|	25
Front brake application uneven	24
Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	24
Driver`s seat insecure \|6.2.A.1\|	23
Hazard warning tell tale not working correctly \|1.4.B.1e\|	23
Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	23
Nearside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	22
Offside Front Shock absorber has negligible damping effect \|2.7.5\|	22
Nearside Front Direction indicator not working \|1.4.A.2c\|	22
Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b))	22
Offside Rear rear brake recording little or no effort \|3.7.B.5a\|	21
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	21
Stop lamp not working \|1.2.1b\|	21
Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	20
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	20
Exhaust system not adequately supported \|7.1.1\|	20
Offside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	20
Nearside front brake binding \|3.7.B.1\|	19
Nearside Front Shock absorber has negligible damping effect \|2.7.5\|	19
Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering \|2.5.A.3a\|	19
Offside front brake binding \|3.7.B.1\|	18
Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	18
Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	18
Nearside Rear rear brake recording little or no effort \|3.7.B.5a\|	18
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	18
Windscreen washer not working	18
Offside Front Headlamp not working on dipped beam \|1.7.5a\|	18
Offside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	17
Offside Rear Direction indicator not working \|1.4.A.2c\|	17
Emissions not tested \|7.0\|	17
Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	17
Offside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	16
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	16
Fuel pipe leaking \|7.2.3\|	16
Brake performance not tested \|3.7.A.1\|	16
Nearside Front wheel bearing rough when rotated \|2.5.A.2\|	16
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	16
Offside Obligatory mirror missing \|8.1.1\|	16
Nearside Front Vehicle structure has excessive corrosion which adversely affects braking or steering \|6.1.A.1\|	15
Exhaust emissions hydrocarbon content excessive \|8.2.1.2 \|b\|\|	15
Nearside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	15
Brake pedal spongy \|3.3.B.1b\|	15
Headlamp switch faulty \|1.7.1\|	15
Nearside Windscreen wiper blade deteriorated \|8.2.2\|	15
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	15
Front passenger door cannot be opened from inside the vehicle \|6.2.B.1b\|	14
Fuel hose leaking \|7.2.3\|	14
Nearside Track rod end ball joint has excessive play \|2.2.B.1f\|	14
Centre Exhaust has a major leak of exhaust gases \|7.1.2\|	14
Offside Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	14
Fuel tank leaking \|7.2.3\|	14
Front Windscreen wiper not operating automatically when switched on \|8.2.1b\|	13
Indicator switch faulty \|1.4.A.1\|	13
Offside Rear Suspension spring mounting prescribed area is inadequately repaired \|2.4.A.3\|	13
Rear Brake hose bulging under pressure \|3.6.B.3\|	13
Nearside Front Headlamp not working on main beam \|1.7.5a\|	13
Nearside Rear Suspension spring mounting prescribed area is inadequately repaired \|2.4.A.3\|	12
Offside Front Vehicle structure has excessive corrosion which adversely affects braking or steering \|6.1.A.1\|	12
Rear Brake hose leaking \|3.6.A.1\|	12
Mechanical brake component has restricted free movement	12
Nearside Rear Braking system leaking \|3.6.A.1\|	12
Nearside Front wheel bearing has excessive play \|2.5.A.3c\|	12
Direction indicators flashing more than 120 times a minute \|1.4.A.2g\|	11
Offside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	11
Offside Rear Braking system leaking \|3.6.A.1\|	11
Nearside Front Suspension arm has excessive play in a pin/bush \|2.4.G.2\|	11
rear brakes release unevenly \|3.7.B.4\|	11
Offside Front Headlamp not working on main beam \|1.7.5a\|	11
Parking brake: efficiency below requirements \|3.7.C.1b\|	11
Horn not loud enough to be heard by another road user \|1.6.2b\|	11
Rear Stop lamp not working \|1.2.1b\|	11
Nearside Front brake disc excessively pitted \|3.5.1h\|	10
Exhaust engine idle speed too high \|7.3.A.2a\|	10
Nearside Front Track rod end ball joint has excessive play \|2.2.B.1f\|	10
Offside Front Windscreen wiper blade deteriorated \|8.2.2\|	10
Horn not working \|7.7 \|a\| \|ii\|\|	10
Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	10
Nearside Front Subframe mounting prescribed area is excessively corroded \|2.4.A.3\|	10
Offside Front wheel bearing rough when rotated \|2.5.A.2\|	10
Offside Rear Rear wheel bearing has excessive play \|2.6.2\|	10
Nearside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	9
Offside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	9
Brake master cylinder/servo mounting prescribed area is excessively corroded \|3.6.C.3\|	9
Offside Front Direction indicators not working \|1.4.A.2c\|	9
Offside Rear wheel bearing has excessive play \|2.6.2\|	9
Nearside Front Lower Suspension arm has excessive play in a pin/bush \|2.4.G.2\|	9
Offside Front Track rod end ball joint has excessive play \|2.2.B.1f\|	9
Offside Outer Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	9
Nearside Front Front wheel bearing has excessive play \|2.5.A.3c\|	9
Position lamp switch faulty \|1.1.A.1\|	9
Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	9
Offside Direction indicators not working \|1.4.A.2c\|	9
Offside Inner Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	9
Offside Inner Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	9
Rear Suspension spring mounting prescribed area is excessively corroded \|2.4.A.3\|	9
Offside Front front brake binding \|3.7.B.1\|	9
Offside Rear Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	9
Nearside Front Position lamp not working (4.2.1 (a) (ii))	9
Offside Windscreen wiper blade deteriorated \|8.2.2\|	9
Offside Headlamp insecure \|1.7.3\|	9

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.

MOT History from tests of petrol MG B GTs year 1979

Find us on Facebook