MOT History from tests of petrol PORSCHE 911s year 1984

Review the list of common PORSCHE 911 failures below or to perform a specific mot history check on your PORSCHE then use our popular KnowYourCar service

mot history

Pass percent:76.89%

(The average a petrol PORSCHE 911 year 1984 passes without issue)

Based on:5,959 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	400
Offside Rear fog lamp not working \|1.3.2b\|	180
Registration plate lamp issues	148
Windscreen wiper does not clear the windscreen effectively	112
Brake hose excessively deteriorated	111
Rear fog lamp not working \|1.3.2b\|	109
Rear brake binding	104
Registration plate issues	69
Service brake: efficiency below requirements \|3.7.B.7\|	62
Windscreen washer not working	49
Parking brake: efficiency below requirements \|3.7.B.7\|	42
Offside front brake binding \|3.7.B.1\|	40
Exhaust emissions carbon monoxide content excessive \|7.3.B.1a\|	37
Offside Rear Rear fog lamp not working \|1.3.2b\|	36
Brakes imbalanced across an axle	36
Rear parking brake recording little or no effort	34
Horn not working \|1.6.2a\|	34
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	29
Rear fog lamp not working (4.5.1 (a) (ii))	26
Nearside Headlamp not working on dipped beam \|1.7.5a\|	26
Nearside front brake binding \|3.7.B.1\|	26
Mechanical brake component has restricted free movement	24
Exhaust has a major leak of exhaust gases \|7.1.2\|	22
Offside Headlamp not working on dipped beam \|1.7.5a\|	22
Nearside Side repeater not working \|1.4.A.2c\|	22
Rear Rear fog lamp not working \|1.3.2b\|	22
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	21
Battery insecure \|1.9.1\|	21
Offside Side repeater not working \|1.4.A.2c\|	20
Nearside Stop lamp not working \|1.2.1b\|	20
Nearside Front front brake binding \|3.7.B.1\|	19
Offside Rear fog lamp not working (4.5.1 (a) (ii))	19
Offside Front front brake binding \|3.7.B.1\|	19
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	19
Offside Front Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	18
Rear fog lamp tell tale not working \|1.3.1b\|	17
Offside Front Direction indicator not working \|1.4.A.2c\|	17
Offside Stop lamp not working \|1.2.1b\|	16
Nearside Rear fog lamp not working \|1.3.2b\|	16
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	15
Nearside Front Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	15
Rear Mechanical brake component has restricted free movement	15
Steering column top bearing excessively worn \|2.1.2c\|	15
Offside Rear Direction indicator not working \|1.4.A.2c\|	14
Nearside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	13
Rear fog lamp switch missing \|1.3.1a\|	13
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	13
Offside Rear Rear fog lamp not working (4.5.1 (a) (ii))	13
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	13
Exhaust emissions hydrocarbon content excessive \|7.3.B.1b\|	13
Nearside Front Direction indicator not working \|1.4.A.2c\|	12
Nearside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	12
Offside Rear fog lamp missing \|1.3.2a\|	12
Front brake application uneven	12
Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	11
Offside Headlamp not working on main beam \|1.7.5a\|	11
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	11
Nearside Front wheel bearing has excessive play \|2.5.A.3c\|	11
Nearside Rear Stop lamp not working \|1.2.1b\|	11
Parking brake lever has no reserve travel \|3.1.6b\|	10
Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	10
Nearside Exhaust has a major leak of exhaust gases \|7.1.2\|	10
Nearside Headlamp not working on main beam \|1.7.5a\|	10
Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	10
Nearside Rear Service brake excessively binding (1.2.1 (f))	10
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	10
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	10
Offside Rear Stop lamp not working \|1.2.1b\|	10
Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	9
Rear fog lamp missing \|1.3.2a\|	9
Rear fog lamp not working \|4.5.1 \|a\| \|ii\|\|	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 Service brake excessively binding (1.2.1 (f))	9
Nearside Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	9
Service brake efficiency below requirements (1.2.2 (a) (i))	9
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	8
Offside Headlamp aim beam image kick up to the offside \|1.8\|	8
Nearside Rear Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	8
Offside Front Service brake excessively binding (1.2.1 (f))	8
Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii))	8
Offside Front wheel bearing has excessive play \|2.5.A.3c\|	8
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	8
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	8
Nearside Steering rack gaiter split \|2.2.D.2d\|	7
Hazard warning tell tale not working correctly \|1.4.B.1e\|	7
Offside Front Position lamp not working (4.2.1 (a) (ii))	7
Nearside Front Position lamp not working (4.2.1 (a) (ii))	7
Offside Rear Service brake excessively binding (1.2.1 (f))	7
Nearside Rear Direction indicator not working \|1.4.A.2c\|	7
Nearside Headlamp aim beam image kick up to the offside \|1.8\|	7
Offside Front Anti-roll bar has excessive play in a pin/bush \|2.4.G.2\|	7
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	7
Nearside Front Side repeater not working \|1.4.A.2c\|	7
Hazard warning lamps not flashing in phase, with ignition on \|1.4.B.1f\|	7
Offside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	7
Nearside Rear Position lamp not working (4.2.1 (a) (ii))	7
Offside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	7
Nearside Front Anti-roll bar has excessive play in a pin/bush \|2.4.G.2\|	7
Rear fog lamp switch faulty \|1.3.1a\|	6
Offside Front wheel bearing rough when rotated \|2.5.A.2\|	6
Offside Rear position lamp\|s\| adversely affected by the operation of another lamp \|1.1.A.3f\|	6
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	6
Offside Front Side repeater not working \|1.4.A.2c\|	6
Offside Rear Direction indicator not working (4.4.1 (a) (ii))	6
Offside Rear Service brake excessively binding \|1.2.1 \|f\|\|	6
Windscreen has damage	6
Offside Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	6
Nearside Front Direction indicators not working \|1.4.A.2c\|	6
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	6
Nearside Front Headlamp not working on main beam \|1.7.5a\|	6
Exhaust emits dense blue smoke at idle \|7.3.A.2b\|	6
Horn not working (7.7 (a))	6
Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b))	6
Front brake disc in such a condition that it is seriously weakened	6
Dipswitch operation does not extinguish all main beam headlamps leaving at least one pair of dipped beam headlamps \|1.7.4b\|	5
Nearside Front passenger door cannot be opened from inside the vehicle \|6.2.B.1b\|	5
Direction indicators not working \|1.4.A.2c\|	5
Offside Rear Position lamp not working (4.2.1 (a) (ii))	5
Nearside Rear Direction indicator not working (4.4.1 (a) (ii))	5
Rear fog lamp missing (4.5.1 (a) (ii))	5
Nearside Headlamp not working on main beam (4.1.1 (a) (ii))	5
Offside Front Headlamp aim beam image kick up to the offside \|1.8\|	5
Front position lamp\|s\| not working \|1.1.A.3b\|	5
Headlamp switch faulty \|1.7.1\|	5
Driver`s door cannot be opened from inside the vehicle \|6.2.B.1b\|	5
Stop lamp remains on when the brakes are released	5
Stop lamp(s) all not working (4.3.1 (a) (iii))	5
Nearside Track rod end ball joint has excessive play \|2.2.B.1f\|	5
Offside Front Headlamp not working on main beam \|1.7.5a\|	5
Emissions not tested \|7.0\|	5
Front passenger door cannot be opened from inside the vehicle \|6.2.B.1b\|	5
Nearside Front Track rod end ball joint has excessive play \|2.2.B.1f\|	5
Nearside Rear Rear position lamp\|s\| not working \|1.1.A.3b\|	5
Nearside Front Brake hose bulging under pressure (1.1.12 (d))	5
Offside Front Upper Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	5
Offside Rear Brake hose bulging under pressure \|3.6.B.3\|	5
Offside Front Front wheel bearing rough when rotated \|2.5.A.2\|	5
Rear brake application uneven	5

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 PORSCHE 911s year 1984

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