MOT History from tests of petrol MGB GTs year 1974

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

mot history

Pass percent:75.51%

(The average a petrol MGB GT year 1974 passes without issue)

Based on:49 MOT Tests

Most common failures	No# failures
Rear brake binding	3
Headlamp aim out of alignment	2
Windscreen wiper does not clear the windscreen effectively	2
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	1
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	1
Nearside Stop lamp not working \|1.2.1b\|	1
Offside Stop lamp not working \|1.2.1b\|	1
Hazard warning lamps not flashing in phase, with ignition off \|1.4.B.1f\|	1
Horn not working \|1.6.2a\|	1
Hazard warning tell tale not working correctly \|1.4.B.1e\|	1
Hazard warning lamps inoperative \|1.4.B.1b\|	1
Offside Front Mechanical brake component locking device insecure \|3.5.1l\|	1
Offside Front Seat belt retracting mechanism defective \|5.2.5b\|	1
Mechanical brake component has restricted free movement	1
Rear Mechanical brake component has restricted free movement	1
Fuel system component leaking \|7.2.3\|	1
Exhaust has a major leak of exhaust gases \|7.1.2\|	1
Nearside Parking brake is not capable of being maintained in operation by direct mechanical action only \|3.1.2\|	1
Service brake: efficiency below requirements \|3.7.B.7\|	1
Parking brake: efficiency below requirements \|3.7.B.7\|	1
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	1
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	1
Registration plate lamp issues	1
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	1
Nearside Front Suspension arm has excessive play in a pin/bush \|2.4.G.2\|	1
Centre Front Lower Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` \|8.3.1e\|	1
Nearside Front coil spring incomplete \|2.4.C.1a\|	1
Offside Headlamp not working on main beam \|1.7.5a\|	1
Centre Front Brake pipe inadequately supported \|3.6.B.1\|	1
Nearside Front suspension locking device ineffective \|2.5.A.4\|	1
Offside Front suspension locking device ineffective \|2.5.A.4\|	1
Brake pedal anti-slip provision missing (1.1.2 (c))	1
Oil leaking excessively from engine (8.4.1 (a) (i))	1
Oil leaking excessively from transmission (8.4.1 (a) (i))	1
Nearside Rear Service brake excessively binding (1.2.1 (f))	1
Offside Rear Service brake excessively binding (1.2.1 (f))	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
Rear brake binding	3
Headlamp aim out of alignment	2
Windscreen wiper does not clear the windscreen effectively	2
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	1
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	1
Nearside Stop lamp not working \|1.2.1b\|	1
Offside Stop lamp not working \|1.2.1b\|	1
Hazard warning lamps not flashing in phase, with ignition off \|1.4.B.1f\|	1
Horn not working \|1.6.2a\|	1
Hazard warning tell tale not working correctly \|1.4.B.1e\|	1
Hazard warning lamps inoperative \|1.4.B.1b\|	1
Offside Front Mechanical brake component locking device insecure \|3.5.1l\|	1
Offside Front Seat belt retracting mechanism defective \|5.2.5b\|	1
Mechanical brake component has restricted free movement	1
Rear Mechanical brake component has restricted free movement	1
Fuel system component leaking \|7.2.3\|	1
Exhaust has a major leak of exhaust gases \|7.1.2\|	1
Nearside Parking brake is not capable of being maintained in operation by direct mechanical action only \|3.1.2\|	1
Service brake: efficiency below requirements \|3.7.B.7\|	1
Parking brake: efficiency below requirements \|3.7.B.7\|	1
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	1
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	1
Registration plate lamp issues	1
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	1
Nearside Front Suspension arm has excessive play in a pin/bush \|2.4.G.2\|	1
Centre Front Lower Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` \|8.3.1e\|	1
Nearside Front coil spring incomplete \|2.4.C.1a\|	1
Offside Headlamp not working on main beam \|1.7.5a\|	1
Centre Front Brake pipe inadequately supported \|3.6.B.1\|	1
Nearside Front suspension locking device ineffective \|2.5.A.4\|	1
Offside Front suspension locking device ineffective \|2.5.A.4\|	1
Brake pedal anti-slip provision missing (1.1.2 (c))	1
Oil leaking excessively from engine (8.4.1 (a) (i))	1
Oil leaking excessively from transmission (8.4.1 (a) (i))	1
Nearside Rear Service brake excessively binding (1.2.1 (f))	1
Offside Rear Service brake excessively binding (1.2.1 (f))	1

MOT History from tests of petrol MGB GTs year 1974

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