>

MOT History from tests of petrol PORSCHE 911s year 1981

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:75.84%
(The average a petrol PORSCHE 911 year 1981 passes without issue)
Based on:3,650 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment281
Registration plate lamp issues121
Offside Rear fog lamp not working |1.3.2b|101
Parking brake: efficiency below requirements |3.7.B.7|86
Rear brake binding85
Windscreen wiper does not clear the windscreen effectively84
Registration plate issues65
Brake hose excessively deteriorated58
Rear parking brake recording little or no effort58
Rear fog lamp not working |1.3.2b|52
Horn not working |1.6.2a|47
Exhaust emissions carbon monoxide content excessive |7.3.B.1a|37
Brakes imbalanced across an axle37
Brake pipe excessively corroded35
Service brake: efficiency below requirements |3.7.B.7|32
Rear fog lamp tell tale not working |1.3.1b|31
Offside Rear Rear fog lamp not working |1.3.2b|24
Nearside Front position lamp|s| not working |1.1.A.3b|21
Nearside Stop lamp not working |1.2.1b|20
Nearside Headlamp not working on dipped beam |1.7.5a|19
Offside front brake binding |3.7.B.1|18
Offside Stop lamp not working |1.2.1b|17
Exhaust emissions hydrocarbon content excessive |7.3.B.1b|16
Nearside front brake binding |3.7.B.1|15
Windscreen washer not working 15
Offside Headlamp not working on dipped beam |1.7.5a|14
Battery insecure |1.9.1|14
Offside Front position lamp|s| not working |1.1.A.3b|13
Rear Rear fog lamp not working |1.3.2b|13
Nearside Rear position lamp|s| not working |1.1.A.3b|13
Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|13
Nearside Headlamp not working on main beam |1.7.5a|12
Mechanical brake component has restricted free movement12
Offside Rear fog lamp missing |1.3.2a|12
Offside Front front brake binding |3.7.B.1|12
Offside Headlamp not working on main beam |1.7.5a|11
Offside Side repeater not working |1.4.A.2c|11
Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|11
Hazard warning tell tale not working correctly |1.4.B.1e|11
Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2|11
Front passenger door cannot be opened from inside the vehicle |6.2.B.1b|10
Nearside Front Direction indicator not working |1.4.A.2c|10
Offside Rear position lamp|s| not working |1.1.A.3b|9
Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b|9
Nearside Rear Stop lamp not working |1.2.1b|9
Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2|9
Offside Rear Direction indicator not working |1.4.A.2c|9
Nearside Side repeater not working |1.4.A.2c|9
Rear fog lamp not working (4.5.1 (a) (ii))9
Nearside Front Front position lamp|s| not working |1.1.A.3b|8
Nearside Front front brake binding |3.7.B.1|8
Exhaust has a major leak of exhaust gases |7.1.2|8
Driver`s door cannot be opened from inside the vehicle |6.2.B.1b|8
Rear fog lamp missing |1.3.2a|8
Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|8
front brake binding |3.7.B.1|7
Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f|7
Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f|7
Offside Front Front position lamp|s| not working |1.1.A.3b|7
Offside Headlamp not working on main beam (4.1.1 (a) (ii))7
Rear Mechanical brake component has restricted free movement7
Offside Rear fog lamp not working |4.5.1 |a| |ii||7
Brake hose has insufficient room to move7
Nearside Front wheel bearing has excessive play |2.5.A.3c|7
Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|7
Nearside Front Brake hose bulging under pressure |3.6.B.3|6
Rear fog lamp switch missing |1.3.1a|6
Offside Headlamp aim beam image obviously incorrect |1.8.A.1b|6
Front brake application uneven6
Headlamp aim not tested |1.8.A.1c|6
Offside Rear Stop lamp not working |1.2.1b|6
Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a|6
Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6|6
Nearside Rear Direction indicator not working |1.4.A.2c|6
Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6|6
Nearside Rear Brake hose bulging under pressure |3.6.B.3|6
Rear Rear fog lamp missing |1.3.2a|5
Rear brake application uneven5
Rear Exhaust has a major leak of exhaust gases |7.1.2|5
Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))5
Offside Front Front wheel bearing has excessive play |2.5.A.3c|5
Offside Front Direction indicator not working |1.4.A.2c|5
Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f|5
Driver`s door cannot be opened from outside the vehicle |6.2.B.1b|5
Hazard warning switch faulty |1.4.B.1d|5
Exhaust engine idle speed too high |7.3.A.2a|5
Nearside Front Direction indicators not working |1.4.A.2c|5
Offside Steering rack gaiter split |2.2.D.2d|5
Offside Front Seat belt damaged sufficient to obstruct correct operation of the belt |5.2.2a|5
Horn not working (7.7 (a) (ii))5
Offside Rear Rear fog lamp not working (4.5.1 (a) (ii))5
Nearside Front Headlamp not working on dipped beam |1.7.5a|4
Offside Front Headlamp not working on dipped beam |1.7.5a|4
Offside Front Headlamp not working on main beam |1.7.5a|4
Nearside Rear Exhaust has a major leak of exhaust gases |7.1.2|4
Headlamp switch faulty |1.7.1|4
Exhaust emits dense blue smoke at idle |7.3.A.2b|4
Windscreen has damage4
Nearside Front Seat belt insecurely fixed to the vehicles structure |5.2.1a|4
Offside Headlamp not in good working order adversely affecting beam image |1.2.4a|4
Nearside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2|4
Offside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c|4
Horn not working |7.7 |a| |ii||4
Direction indicators not working |1.4.A.2c|4
Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|4
Nearside Rear Direction indicator incorrect colour |1.4.A.2f|4
Offside Rear Direction indicator incorrect colour |1.4.A.2f|4
Nearside Front Front wheel bearing has excessive play |2.5.A.3c|4
Offside Rear Service brake excessively binding |1.2.1 |f||4
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))4
Nearside Front Position lamp not working (4.2.1 (a) (ii))4
Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|4
Nearside Steering rack gaiter split |2.2.D.2d|4
Offside Front wheel bearing rough when rotated |2.5.A.2|4
Offside Front Shock absorber has a serious fluid leak |2.7.3|4
Offside Front Direction indicators not working |1.4.A.2c|4
Centre Exhaust has a major leak of exhaust gases |7.1.2|4
Brake performance not tested |3.7.A.1|4
Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6|4
Parking brake efficiency below requirements |1.4.2 |a| |i||4
Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f|4
Nearside Rear Shock absorber has a serious fluid leak |2.7.3|4
Hazard warning lamps inoperative |1.4.B.1b|4
Brake hydraulic reservoir fluid level below minimum level |3.6.G.1b|3
Offside Rear Rear fog lamp missing |1.3.2a|3
Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b|3
Offside Rear fog lamp emits a light other than red |1.3.2e|3
Windscreen wiper blade deteriorated |8.2.2|3
rear brakes release unevenly |3.7.B.4|3
Front brake disc in such a condition that it is seriously weakened3
Offside Front wheel bearing has excessive play |2.5.A.3c|3
Rear fog lamp insecure |1.3.2a|3
Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` |8.3.1b|3
Nearside Front Side repeater not working |1.4.A.2c|3
Position lamp switch faulty |1.1.A.1|3
Horn not loud enough to be heard by another road user |1.6.2b|3
Offside Driver`s door cannot be opened from inside the vehicle |6.2.B.1b|3
Offside Rear Service brake excessively binding (1.2.1 (f))3
Nearside Rear Position lamp not working |4.2.1 |a||3
Offside Rear fog lamp excessively deteriorated so that it is not visible from a reasonable distance |1.3.2d|3
Parking brake lever ratchet mechanism is broken |3.1.5|3
Offside Front Side repeater not working |1.4.A.2c|3
Headlamp not working on main beam |1.7.5a|3
Nearside Front Front wheel bearing rough when rotated |2.5.A.2|3
Windscreen wiper blade insecure3
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|3
Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b|3
Bonnet cannot be secured in the closed position |8.4.1|3
Nearside Indicator tell tale inoperative |1.4.A.2a|3
Indicator tell tale inoperative |1.4.A.2a|3
Offside Front brake caliper has restricted free movement |3.5.1k|3
Front Windscreen wiper not operating automatically when switched on |8.2.1b|3
Front passenger door cannot be opened from outside the vehicle |6.2.B.1b|3
Nearside Front Brake hose excessively damaged |3.6.B.4d|3
An item not tested |Manual|3
Offside Rear Rear fog lamp not working |4.5.1 |a| |ii||3
Offside Rear Brake hose bulging under pressure |3.6.B.3|3
All direction indicators not working (4.4.1 (a) (ii))3
Stop lamp not working |1.2.1b|3
Nearside Headlamp not working on main beam (4.1.1 (a) (ii))3
Nearside Front Front passenger door cannot be opened from outside the vehicle |6.2.B.1b|3
All position lamps not working |1.1.A.3b|3
Offside Front Brake hose bulging under pressure |3.6.B.3|3
Offside Rear fog lamp not working (4.5.1 (a) (ii))3
Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a|3
Nearside Front Service brake excessively binding (1.2.1 (f))3
Nearside Front Shock absorber has a serious fluid leak |2.7.3|3
Front position lamp|s| not working |1.1.A.3b|3
Offside Front Position lamp not working (4.2.1 (a) (ii))3
Rear Anti-roll bar missing |2.4.G.1|3
Nearside Rear Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2|3
Dipswitch operation does not deflect all main beam headlamps to make them dipped beams |1.7.4b|3
Offside Rear An item not tested |Manual|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.

Find us on Facebook

© KnowYourCar™ 2019. All rights reserved
Except where otherwise noted, content on our MOT statistics pages are licensed under a Creative Commons Attribution 4.0 International license.
You are free to redistribute the material in any medium or format as long as credit is given to KnowYourCar

WARNING: We have placed hidden watermarks in our data. We will take action against our data being used outside of these terms.

MOT Data licensed under the Open Government Licence v3.0

By using our site you are agreeing to our terms and conditions
Terms & Conditions  Privacy Policy