MOT History from tests of petrol TRIUMPH TR4As year 1966

Review the list of common TRIUMPH TR4A failures below or to perform a specific mot history check on your TRIUMPH then use our popular KnowYourCar service

mot history

Pass percent:79.04%

(The average a petrol TRIUMPH TR4A year 1966 passes without issue)

Based on:3,197 MOT Tests

Most common failures	No# failures
Parking brake: efficiency below requirements \|3.7.B.7\|	137
Headlamp aim out of alignment	111
Horn not working \|1.6.2a\|	88
Windscreen wiper does not clear the windscreen effectively	70
Brakes imbalanced across an axle	69
Registration plate lamp issues	57
Rear parking brake recording little or no effort	53
Rear brake binding	34
Service brake: efficiency below requirements \|3.7.B.7\|	22
Nearside Stop lamp not working \|1.2.1b\|	19
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	16
Offside Stop lamp not working \|1.2.1b\|	16
Nearside Headlamp not working on dipped beam \|1.7.5a\|	16
Offside Steering rack gaiter split \|2.2.D.2d\|	15
Offside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	14
Offside Headlamp not working on dipped beam \|1.7.5a\|	14
Parking brake: efficiency below requirements \|3.7.C.1b\|	13
Nearside rear brake recording little or no effort \|3.7.B.5a\|	12
All position lamps not working \|1.1.A.3b\|	12
Nearside Front wheel bearing has excessive play \|2.5.A.3c\|	12
Direction indicators not working \|1.4.A.2c\|	11
Nearside Side repeater not working \|1.4.A.2c\|	11
Offside Side repeater not working \|1.4.A.2c\|	11
Nearside Steering rack gaiter split \|2.2.D.2d\|	11
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	11
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	11
Front brake application uneven	11
Nearside Headlamp not working on main beam \|1.7.5a\|	11
Nearside Rear Stop lamp not working \|1.2.1b\|	11
Offside front brake binding \|3.7.B.1\|	11
Nearside front brake binding \|3.7.B.1\|	10
Offside rear brake recording little or no effort \|3.7.B.5a\|	10
Indicator tell tale inoperative \|1.4.A.2a\|	10
Rear brake application uneven	9
Offside Headlamp not working on main beam \|1.7.5a\|	9
Fuel system component leaking \|7.2.3\|	9
Steering system has excessive free play detected at the steering wheel \|steering rack fitted\| \|2.2.A.1b\|	9
Offside Front wheel bearing has excessive play \|2.5.A.3c\|	8
Windscreen wiper not operating automatically when switched on \|8.2.1b\|	8
Offside Front Headlamp not working on dipped beam \|1.7.5a\|	8
Offside Rear Stop lamp not working \|1.2.1b\|	8
Steering column movement between the shaft and steering wheel \|2.1.2b\|	7
Rear Stop lamp not working \|1.2.1b\|	7
Registration plate issues	7
Nearside Front Direction indicator not working \|1.4.A.2c\|	7
Parking brake lever defective so that it cannot be satisfactorily operated \|3.1.3c\|	6
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	6
Offside Front front brake binding \|3.7.B.1\|	6
Nearside Front Headlamp not working on main beam \|1.7.5a\|	6
Front passenger door cannot be opened from outside the vehicle \|6.2.B.1b\|	6
Brake hose excessively deteriorated	6
Driver`s door cannot be opened from outside the vehicle \|6.2.B.1b\|	6
Windscreen wiper blade insecure	6
Nearside Front Wheel insecure \|4.2.A.1c\|	6
Nearside Rear rear brake recording little or no effort \|3.7.B.5a\|	6
Fuel pipe leaking \|7.2.3\|	6
Parking brake lever ratchet mechanism is broken \|3.1.5\|	5
Steering column top bearing excessively worn \|2.1.2c\|	5
Offside Rear wheel bearing has excessive play \|2.6.2\|	5
Offside Front Headlamp not working on main beam \|1.7.5a\|	5
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\|	5
Steering column top mounting bracket insecure \|2.1.2d\|	5
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	5
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	5
Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	5
Rear Mechanical brake component has restricted free movement	5
Offside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	5
Main beam `tell-tale` not working \|1.7.4c\|	5
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	5
Nearside Rear Direction indicator not working \|1.4.A.2c\|	5
Brake pedal spongy \|3.3.B.1b\|	5
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	5
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	5
Front Exhaust has a major leak of exhaust gases \|7.1.2\|	5
Nearside Front Windscreen wiper not operating automatically when switched on \|8.2.1b\|	5
Offside Front Windscreen wiper not operating automatically when switched on \|8.2.1b\|	5
Brake performance not tested \|3.7.A.1\|	4
Exhaust has a major leak of exhaust gases \|7.1.2\|	4
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	4
Headlamp not working on dipped beam \|1.7.5a\|	4
Fuel cap/sealing device sealing washer deteriorated \|7.2.4c\|	4
Nearside Front front brake binding \|3.7.B.1\|	4
Windscreen washer not working	4
Nearside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	4
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	4
Steering column shaft has excessive end float \|2.1.3\|	4
Indicator switch faulty \|1.4.A.1\|	4
Battery insecure \|1.9.1\|	4
Nearside Front Upper Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	4
Offside Front Direction indicator not working \|1.4.A.2c\|	4
Front Windscreen wiper not operating automatically when switched on \|8.2.1b\|	4
Nearside Rear wheel bearing has excessive play \|2.6.2\|	4
Nearside Front Track rod end ball joint has excessive play \|2.2.B.1f\|	4
Nearside Rear Shock absorber has negligible damping effect \|2.7.5\|	4
Offside Front Side repeater not working \|1.4.A.2c\|	4
Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii))	4
Windscreen wiper not working (3.4 (a))	4
Nearside Rear Braking system leaking \|3.6.A.1\|	3
Driver`s seat insecure \|6.2.A.1\|	3
Nearside Front brake disc excessively pitted \|3.5.1h\|	3
Offside Front brake disc excessively pitted \|3.5.1h\|	3
Horn control missing \|1.6.1\|	3
Headlamp not working on main beam \|1.7.5a\|	3
Nearside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	3
Offside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	3
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	3
Speedometer cannot be illuminated. \|6.7.3\|	3
rear parking \|secondary\| brakes imbalanced	3
Offside Front Wheel insecure \|4.2.A.1c\|	3
Offside Rear Suspension component mounting prescribed area is inadequately repaired \|2.4.A.3\|	3
Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	3
Nearside Front Front wheel bearing has excessive play \|2.5.A.3c\|	3
Brake pedal anti-slip provision missing \|3.3.A.1b\|	3
Nearside Seat belt retracting mechanism defective \|5.2.5b\|	3
Nearside Windscreen wiper not operating automatically when switched on \|8.2.1b\|	3
Offside Windscreen wiper not operating automatically when switched on \|8.2.1b\|	3
Brake hose has insufficient room to move	3
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	3
Offside Rear Direction indicator not working \|1.4.A.2c\|	3
Nearside Front Steering arm has relative movement at its fixings \|2.2.B.1h\|	3
Nearside Front Brake hose twisted \|found during steering lock to lock check\| \|2.2.D.2b\|	3
Nearside Rear Shock absorber insecure \|2.7.2b\|	3
Service brake: efficiency below requirements \|3.7.C.1a\|	3
Nearside Front Lower Suspension arm has excessive play in a pin/bush \|2.4.G.2\|	3
Nearside Upper Front suspension ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.4.G.2\|	3
Headlamp switch faulty \|1.7.1\|	3
Offside Front Front wheel bearing has excessive play \|2.5.A.3c\|	3
Offside Headlamp not working on dipped beam (4.1.1 (a) (ii))	3
Nearside Headlamp not working on main beam (4.1.1 (a) (ii))	3
Parking brake efficiency below requirements (1.4.2 (a) (i))	3
Parking (secondary brake) on a single line braking system imbalanced across an axle Axle 1 (1.3.1 (b) (i))	3
Horn not working (7.7 (a) (ii))	3
Horn not working (7.7 (a))	3

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
Parking brake: efficiency below requirements \|3.7.B.7\|	137
Headlamp aim out of alignment	111
Horn not working \|1.6.2a\|	88
Windscreen wiper does not clear the windscreen effectively	70
Brakes imbalanced across an axle	69
Registration plate lamp issues	57
Rear parking brake recording little or no effort	53
Rear brake binding	34
Service brake: efficiency below requirements \|3.7.B.7\|	22
Nearside Stop lamp not working \|1.2.1b\|	19
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	16
Offside Stop lamp not working \|1.2.1b\|	16
Nearside Headlamp not working on dipped beam \|1.7.5a\|	16
Offside Steering rack gaiter split \|2.2.D.2d\|	15
Offside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	14
Offside Headlamp not working on dipped beam \|1.7.5a\|	14
Parking brake: efficiency below requirements \|3.7.C.1b\|	13
Nearside rear brake recording little or no effort \|3.7.B.5a\|	12
All position lamps not working \|1.1.A.3b\|	12
Nearside Front wheel bearing has excessive play \|2.5.A.3c\|	12
Direction indicators not working \|1.4.A.2c\|	11
Nearside Side repeater not working \|1.4.A.2c\|	11
Offside Side repeater not working \|1.4.A.2c\|	11
Nearside Steering rack gaiter split \|2.2.D.2d\|	11
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	11
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	11
Front brake application uneven	11
Nearside Headlamp not working on main beam \|1.7.5a\|	11
Nearside Rear Stop lamp not working \|1.2.1b\|	11
Offside front brake binding \|3.7.B.1\|	11
Nearside front brake binding \|3.7.B.1\|	10
Offside rear brake recording little or no effort \|3.7.B.5a\|	10
Indicator tell tale inoperative \|1.4.A.2a\|	10
Rear brake application uneven	9
Offside Headlamp not working on main beam \|1.7.5a\|	9
Fuel system component leaking \|7.2.3\|	9
Steering system has excessive free play detected at the steering wheel \|steering rack fitted\| \|2.2.A.1b\|	9
Offside Front wheel bearing has excessive play \|2.5.A.3c\|	8
Windscreen wiper not operating automatically when switched on \|8.2.1b\|	8
Offside Front Headlamp not working on dipped beam \|1.7.5a\|	8
Offside Rear Stop lamp not working \|1.2.1b\|	8
Steering column movement between the shaft and steering wheel \|2.1.2b\|	7
Rear Stop lamp not working \|1.2.1b\|	7
Registration plate issues	7
Nearside Front Direction indicator not working \|1.4.A.2c\|	7
Parking brake lever defective so that it cannot be satisfactorily operated \|3.1.3c\|	6
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	6
Offside Front front brake binding \|3.7.B.1\|	6
Nearside Front Headlamp not working on main beam \|1.7.5a\|	6
Front passenger door cannot be opened from outside the vehicle \|6.2.B.1b\|	6
Brake hose excessively deteriorated	6
Driver`s door cannot be opened from outside the vehicle \|6.2.B.1b\|	6
Windscreen wiper blade insecure	6
Nearside Front Wheel insecure \|4.2.A.1c\|	6
Nearside Rear rear brake recording little or no effort \|3.7.B.5a\|	6
Fuel pipe leaking \|7.2.3\|	6
Parking brake lever ratchet mechanism is broken \|3.1.5\|	5
Steering column top bearing excessively worn \|2.1.2c\|	5
Offside Rear wheel bearing has excessive play \|2.6.2\|	5
Offside Front Headlamp not working on main beam \|1.7.5a\|	5
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\|	5
Steering column top mounting bracket insecure \|2.1.2d\|	5
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	5
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	5
Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	5
Rear Mechanical brake component has restricted free movement	5
Offside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	5
Main beam `tell-tale` not working \|1.7.4c\|	5
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	5
Nearside Rear Direction indicator not working \|1.4.A.2c\|	5
Brake pedal spongy \|3.3.B.1b\|	5
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	5
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	5
Front Exhaust has a major leak of exhaust gases \|7.1.2\|	5
Nearside Front Windscreen wiper not operating automatically when switched on \|8.2.1b\|	5
Offside Front Windscreen wiper not operating automatically when switched on \|8.2.1b\|	5
Brake performance not tested \|3.7.A.1\|	4
Exhaust has a major leak of exhaust gases \|7.1.2\|	4
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	4
Headlamp not working on dipped beam \|1.7.5a\|	4
Fuel cap/sealing device sealing washer deteriorated \|7.2.4c\|	4
Nearside Front front brake binding \|3.7.B.1\|	4
Windscreen washer not working	4
Nearside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	4
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	4
Steering column shaft has excessive end float \|2.1.3\|	4
Indicator switch faulty \|1.4.A.1\|	4
Battery insecure \|1.9.1\|	4
Nearside Front Upper Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	4
Offside Front Direction indicator not working \|1.4.A.2c\|	4
Front Windscreen wiper not operating automatically when switched on \|8.2.1b\|	4
Nearside Rear wheel bearing has excessive play \|2.6.2\|	4
Nearside Front Track rod end ball joint has excessive play \|2.2.B.1f\|	4
Nearside Rear Shock absorber has negligible damping effect \|2.7.5\|	4
Offside Front Side repeater not working \|1.4.A.2c\|	4
Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii))	4
Windscreen wiper not working (3.4 (a))	4
Nearside Rear Braking system leaking \|3.6.A.1\|	3
Driver`s seat insecure \|6.2.A.1\|	3
Nearside Front brake disc excessively pitted \|3.5.1h\|	3
Offside Front brake disc excessively pitted \|3.5.1h\|	3
Horn control missing \|1.6.1\|	3
Headlamp not working on main beam \|1.7.5a\|	3
Nearside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	3
Offside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	3
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	3
Speedometer cannot be illuminated. \|6.7.3\|	3
rear parking \|secondary\| brakes imbalanced	3
Offside Front Wheel insecure \|4.2.A.1c\|	3
Offside Rear Suspension component mounting prescribed area is inadequately repaired \|2.4.A.3\|	3
Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	3
Nearside Front Front wheel bearing has excessive play \|2.5.A.3c\|	3
Brake pedal anti-slip provision missing \|3.3.A.1b\|	3
Nearside Seat belt retracting mechanism defective \|5.2.5b\|	3
Nearside Windscreen wiper not operating automatically when switched on \|8.2.1b\|	3
Offside Windscreen wiper not operating automatically when switched on \|8.2.1b\|	3
Brake hose has insufficient room to move	3
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	3
Offside Rear Direction indicator not working \|1.4.A.2c\|	3
Nearside Front Steering arm has relative movement at its fixings \|2.2.B.1h\|	3
Nearside Front Brake hose twisted \|found during steering lock to lock check\| \|2.2.D.2b\|	3
Nearside Rear Shock absorber insecure \|2.7.2b\|	3
Service brake: efficiency below requirements \|3.7.C.1a\|	3
Nearside Front Lower Suspension arm has excessive play in a pin/bush \|2.4.G.2\|	3
Nearside Upper Front suspension ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.4.G.2\|	3
Headlamp switch faulty \|1.7.1\|	3
Offside Front Front wheel bearing has excessive play \|2.5.A.3c\|	3
Offside Headlamp not working on dipped beam (4.1.1 (a) (ii))	3
Nearside Headlamp not working on main beam (4.1.1 (a) (ii))	3
Parking brake efficiency below requirements (1.4.2 (a) (i))	3
Parking (secondary brake) on a single line braking system imbalanced across an axle Axle 1 (1.3.1 (b) (i))	3
Horn not working (7.7 (a) (ii))	3
Horn not working (7.7 (a))	3

MOT History from tests of petrol TRIUMPH TR4As year 1966

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