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:76.45%

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

Based on:6,568 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	480
Offside Rear fog lamp not working \|1.3.2b\|	222
Brake hose excessively deteriorated	205
Registration plate lamp issues	175
Windscreen wiper does not clear the windscreen effectively	131
Rear brake binding	130
Rear fog lamp not working \|1.3.2b\|	116
Registration plate issues	96
Offside Rear Rear fog lamp not working \|1.3.2b\|	68
Service brake: efficiency below requirements \|3.7.B.7\|	54
Brakes imbalanced across an axle	45
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
Windscreen washer not working	38
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
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
Rear fog lamp not working (4.5.1 (a) (ii))	22
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
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
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
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 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 Position lamp not working (4.2.1 (a) (ii))	12
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
Nearside Front Service brake excessively binding (1.2.1 (f))	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 Front Position lamp not working (4.2.1 (a) (ii))	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
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	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 Front Side repeater not working \|1.4.A.2c\|	9
Offside Front Service brake excessively binding (1.2.1 (f))	9
Nearside Front Lower Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	8
Offside Rear fog lamp not working (4.5.1 (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
Steering column top bearing excessively worn \|2.1.2c\|	8
Nearside Rear Rear fog lamp not working \|1.3.2b\|	8
Nearside Rear Position lamp not working (4.2.1 (a) (ii))	7
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	7
Nearside Rear Service brake excessively binding (1.2.1 (f))	7
Offside Rear Rear fog lamp not working (4.5.1 (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 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 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 Headlamp excessively deteriorated so that the light output is severely reduced \|1.7.5a\|	6
Rear brake application uneven	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
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
Offside Rear Position lamp not working (4.2.1 (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
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
Rear Rear fog lamp not working (4.5.1 (a) (ii))	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 Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	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
Offside Rear Service brake excessively binding (1.2.1 (f))	5
Emissions not tested \|7.0\|	5
Offside Front Direction indicator not working (4.4.1 (a) (ii))	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
Nearside Stop lamp(s) not working (4.3.1 (a) (ii))	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
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.

Got suggestions? We’re improving this section all the time. If you have any suggestions, please let us know.

Most common failures	No# failures
Headlamp aim out of alignment	480
Offside Rear fog lamp not working \|1.3.2b\|	222
Brake hose excessively deteriorated	205
Registration plate lamp issues	175
Windscreen wiper does not clear the windscreen effectively	131
Rear brake binding	130
Rear fog lamp not working \|1.3.2b\|	116
Registration plate issues	96
Offside Rear Rear fog lamp not working \|1.3.2b\|	68
Service brake: efficiency below requirements \|3.7.B.7\|	54
Brakes imbalanced across an axle	45
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
Windscreen washer not working	38
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
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
Rear fog lamp not working (4.5.1 (a) (ii))	22
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
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
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
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 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 Position lamp not working (4.2.1 (a) (ii))	12
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
Nearside Front Service brake excessively binding (1.2.1 (f))	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 Front Position lamp not working (4.2.1 (a) (ii))	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
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	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 Front Side repeater not working \|1.4.A.2c\|	9
Offside Front Service brake excessively binding (1.2.1 (f))	9
Nearside Front Lower Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	8
Offside Rear fog lamp not working (4.5.1 (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
Steering column top bearing excessively worn \|2.1.2c\|	8
Nearside Rear Rear fog lamp not working \|1.3.2b\|	8
Nearside Rear Position lamp not working (4.2.1 (a) (ii))	7
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	7
Nearside Rear Service brake excessively binding (1.2.1 (f))	7
Offside Rear Rear fog lamp not working (4.5.1 (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 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 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 Headlamp excessively deteriorated so that the light output is severely reduced \|1.7.5a\|	6
Rear brake application uneven	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
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
Offside Rear Position lamp not working (4.2.1 (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
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
Rear Rear fog lamp not working (4.5.1 (a) (ii))	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 Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	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
Offside Rear Service brake excessively binding (1.2.1 (f))	5
Emissions not tested \|7.0\|	5
Offside Front Direction indicator not working (4.4.1 (a) (ii))	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
Nearside Stop lamp(s) not working (4.3.1 (a) (ii))	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
Service brake efficiency below requirements \|1.2.2 \|a\| \|i\|\|	5
Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii))	5

MOT History from tests of petrol PORSCHE 911s year 1985

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