MOT History from tests of petrol PORSCHE 911s year 1985

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:76.70%

(The average a petrol PORSCHE 911 year 1985 passes without issue)

Based on:7,089 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	512
Offside Rear fog lamp not working \|1.3.2b\|	222
Brake hose excessively deteriorated	207
Registration plate lamp issues	179
Windscreen wiper does not clear the windscreen effectively	136
Rear brake binding	130
Rear fog lamp not working \|1.3.2b\|	116
Registration plate issues	102
Offside Rear Rear fog lamp not working \|1.3.2b\|	68
Windscreen washer not working	57
Service brake: efficiency below requirements \|3.7.B.7\|	54
Brakes imbalanced across an axle	46
Rear parking brake recording little or no effort	45
Parking brake: efficiency below requirements \|3.7.B.7\|	43
Nearside front brake binding \|3.7.B.1\|	41
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	40
Offside Side repeater not working \|1.4.A.2c\|	38
Exhaust emissions carbon monoxide content excessive \|7.3.B.1a\|	38
Offside front brake binding \|3.7.B.1\|	36
Rear fog lamp not working (4.5.1 (a) (ii))	36
Exhaust has a major leak of exhaust gases \|7.1.2\|	36
Nearside Stop lamp not working \|1.2.1b\|	32
Horn not working \|1.6.2a\|	32
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	32
Nearside Side repeater not working \|1.4.A.2c\|	30
Rear Rear fog lamp not working \|1.3.2b\|	29
Rear fog lamp tell tale not working \|1.3.1b\|	29
Offside Stop lamp not working \|1.2.1b\|	26
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	25
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	25
Nearside Front front brake binding \|3.7.B.1\|	23
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	22
Mechanical brake component has restricted free movement	21
Nearside Headlamp not working on main beam \|1.7.5a\|	21
Nearside Headlamp not working on dipped beam \|1.7.5a\|	20
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	19
Rear Mechanical brake component has restricted free movement	18
Battery insecure \|1.9.1\|	18
Offside Headlamp not working on dipped beam \|1.7.5a\|	18
Nearside Front Position lamp not working (4.2.1 (a) (ii))	17
Offside Rear fog lamp missing \|1.3.2a\|	17
Offside Headlamp not working on main beam \|1.7.5a\|	17
Offside Front front brake binding \|3.7.B.1\|	16
Offside Front Position lamp not working (4.2.1 (a) (ii))	16
Nearside Front Direction indicator not working \|1.4.A.2c\|	16
Nearside Rear Direction indicator not working \|1.4.A.2c\|	16
Rear fog lamp missing \|1.3.2a\|	15
Offside Rear fog lamp not working (4.5.1 (a) (ii))	15
Offside Front wheel bearing has excessive play \|2.5.A.3c\|	15
Offside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	15
Rear fog lamp not working \|4.5.1 \|a\| \|ii\|\|	14
Nearside Rear fog lamp not working \|1.3.2b\|	14
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	14
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	14
Nearside Headlamp aim beam image kick up to the offside \|1.8\|	13
Offside Headlamp aim beam image kick up to the offside \|1.8\|	13
Nearside Front Service brake excessively binding (1.2.1 (f))	13
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	12
Nearside Front Side repeater not working \|1.4.A.2c\|	11
Nearside Rear Stop lamp not working \|1.2.1b\|	11
Stop lamp remains on when the brakes are released	11
Offside Front Direction indicator not working \|1.4.A.2c\|	11
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	11
Offside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	11
Exhaust emissions hydrocarbon content excessive \|7.3.B.1b\|	11
Nearside Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	10
Nearside Front Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	10
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	10
Offside Rear Service brake excessively binding (1.2.1 (f))	10
Offside Front Service brake excessively binding (1.2.1 (f))	10
Offside Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	10
Nearside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	10
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	10
Offside Rear Direction indicator not working \|1.4.A.2c\|	9
Nearside Rear Position lamp not working (4.2.1 (a) (ii))	9
Nearside Rear Service brake excessively binding (1.2.1 (f))	9
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	9
Offside Rear Stop lamp not working \|1.2.1b\|	9
Offside Front Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	9
Rear fog lamp switch faulty \|1.3.1a\|	9
Offside Rear Rear fog lamp not working (4.5.1 (a) (ii))	9
Offside Front Side repeater not working \|1.4.A.2c\|	9
Nearside Front Lower Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	8
Offside Rear Position lamp not working (4.2.1 (a) (ii))	8
Offside Front Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	8
Offside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	8
Rear Rear fog lamp not working (4.5.1 (a) (ii))	8
Steering column top bearing excessively worn \|2.1.2c\|	8
Nearside Stop lamp(s) not working (4.3.1 (a) (ii))	8
Nearside Rear Rear fog lamp not working \|1.3.2b\|	8
Service brake efficiency below requirements (1.2.2 (a) (i))	7
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	7
Offside Front Direction indicator not working (4.4.1 (a) (ii))	7
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	7
Nearside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	7
Rear fog lamp tell tale missing \|1.3.1b\|	7
Nearside Front Direction indicators not working \|1.4.A.2c\|	7
Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii))	7
Nearside Rear position lamp\|s\| adversely affected by the operation of another lamp \|1.1.A.3f\|	7
Dipswitch operation does not deflect all main beam headlamps to make them dipped beams \|1.7.4b\|	6
Offside Rear front brake binding \|3.7.B.1\|	6
front brake binding \|3.7.B.1\|	6
Nearside Front Headlamp not working on main beam \|1.7.5a\|	6
Nearside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	6
Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	6
Offside Front Headlamp not working on dipped beam \|1.7.5a\|	6
Offside Front Headlamp not working on main beam \|1.7.5a\|	6
Nearside Front wheel bearing has excessive play \|2.5.A.3c\|	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
Offside Rear Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))	6
Offside Headlamp excessively deteriorated so that the light output is severely reduced \|1.7.5a\|	6
Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	6
Rear brake application uneven	6
Nearside Front Direction indicator not working (4.4.1 (a) (ii))	6
Driver`s door cannot be opened from inside the vehicle \|6.2.B.1b\|	6
Nearside Front Service brake excessively binding \|1.2.1 \|f\|\|	6
Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	6
Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	6
Fuel tank leaking \|7.2.3\|	5
Nearside Rear front brake binding \|3.7.B.1\|	5
Rear fog lamp missing (4.5.1 (a) (ii))	5
Direction indicators not working \|1.4.A.2c\|	5
Parking brake lever has no reserve travel \|3.1.6b\|	5
Hazard warning lamps not flashing in phase, with ignition on \|1.4.B.1f\|	5
Offside Rear wheel bearing rough when rotated \|2.6.1\|	5
Offside Rear fog lamp not working \|4.5.1 \|a\| \|ii\|\|	5
Nearside Front Front wheel bearing has excessive play \|2.5.A.3c\|	5
Nearside Front Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	5
Horn not working (7.7 (a))	5
Nearside Headlamp excessively deteriorated so that the light output is severely reduced \|1.7.5a\|	5
Nearside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	5
Nearside Exhaust has a major leak of exhaust gases \|7.1.2\|	5
Nearside Stop lamp adversely affected by the operation of another lamp \|1.2.1f\|	5
Offside Stop lamp adversely affected by the operation of another lamp \|1.2.1f\|	5
Offside Front Lower Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	5
Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	5
Front brake application uneven	5
Emissions not tested \|7.0\|	5
Nearside Rear Direction indicators not working \|1.4.A.2c\|	5
Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	5
Rear fog lamp switch missing \|1.3.1a\|	5
Offside Front Front wheel bearing has excessive play \|2.5.A.3c\|	5
Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	5
Parking brake efficiency below requirements (1.4.2 (a) (i))	5
Service brake efficiency below requirements \|1.2.2 \|a\| \|i\|\|	5
Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii))	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 1985

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