MOT History from tests of petrol PORSCHE 911s year 1977

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:75.34%

(The average a petrol PORSCHE 911 year 1977 passes without issue)

Based on:2,628 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	205
Registration plate lamp issues	86
Exhaust emissions carbon monoxide content excessive \|7.3.B.1a\|	68
Registration plate issues	54
Rear brake binding	54
Windscreen wiper does not clear the windscreen effectively	50
Horn not working \|1.6.2a\|	46
Brake hose excessively deteriorated	46
Parking brake: efficiency below requirements \|3.7.B.7\|	44
Brake pipe excessively corroded	30
Rear parking brake recording little or no effort	29
Brakes imbalanced across an axle	25
Service brake: efficiency below requirements \|3.7.B.7\|	23
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	19
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	19
Exhaust emissions hydrocarbon content excessive \|7.3.B.1b\|	15
Offside Headlamp not working on dipped beam \|1.7.5a\|	15
Nearside Stop lamp not working \|1.2.1b\|	15
Rear Mechanical brake component has restricted free movement	15
Steering column top bearing excessively worn \|2.1.2c\|	14
Nearside Rear Anti-roll bar linkage has excessive play in a ball joint \|2.4.G.2\|	13
Nearside Front Direction indicator not working \|1.4.A.2c\|	13
Nearside Headlamp not working on main beam \|1.7.5a\|	12
Nearside Rear Stop lamp not working \|1.2.1b\|	12
Offside Headlamp aim beam image kick up to the offside \|1.8\|	12
Nearside Rear Anti-roll bar linkage has excessive play in a pin/bush \|2.4.G.2\|	12
Nearside Headlamp not working on dipped beam \|1.7.5a\|	12
Offside Rear Stop lamp not working \|1.2.1b\|	11
Nearside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	11
Front brake application uneven	11
Nearside front brake binding \|3.7.B.1\|	11
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	10
Offside Rear Anti-roll bar linkage has excessive play in a ball joint \|2.4.G.2\|	10
Offside Front Front wheel bearing has excessive play \|2.5.A.3c\|	10
Exhaust has a major leak of exhaust gases \|7.1.2\|	10
Offside Headlamp not working on main beam \|1.7.5a\|	10
Nearside Headlamp aim beam image kick up to the offside \|1.8\|	9
Nearside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	9
Offside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	9
Offside Rear Anti-roll bar linkage has excessive play in a pin/bush \|2.4.G.2\|	9
Offside Stop lamp not working \|1.2.1b\|	9
Nearside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	9
Mechanical brake component has restricted free movement	9
Battery insecure \|1.9.1\|	9
Nearside Rear Anti-roll bar has excessive play in a pin/bush \|2.4.G.2\|	8
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	8
Nearside Front front brake binding \|3.7.B.1\|	8
Offside Front wheel bearing has excessive play \|2.5.A.3c\|	8
Direction indicators not working \|1.4.A.2c\|	8
Offside Front Direction indicator not working \|1.4.A.2c\|	7
Nearside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	7
Offside front brake binding \|3.7.B.1\|	7
Nearside Front wheel bearing has excessive play \|2.5.A.3c\|	7
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	7
Nearside Front Headlamp not working on main beam \|1.7.5a\|	7
Nearside Rear position lamp\|s\| adversely affected by the operation of another lamp \|1.1.A.3f\|	7
Offside Front Headlamp not working on dipped beam \|1.7.5a\|	7
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	6
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	6
Nearside Rear Direction indicator incorrect colour \|1.4.A.2f\|	6
Fuel cap/sealing device sealing washer torn \|7.2.4c\|	6
Nearside Side repeater not working \|1.4.A.2c\|	6
Offside Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	6
Front passenger door cannot be opened from inside the vehicle \|6.2.B.1b\|	6
Front passenger door cannot be opened from outside the vehicle \|6.2.B.1b\|	6
Exhaust engine idle speed too high \|7.3.A.2a\|	6
Offside Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	6
Offside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	6
Fuel cap/sealing device sealing washer deteriorated \|7.2.4c\|	6
Hazard warning lamps inoperative \|1.4.B.1b\|	5
Nearside Front Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	5
Offside Rear Direction indicator incorrect colour \|1.4.A.2f\|	5
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	5
Windscreen washer not working	5
Hazard warning tell tale not working correctly \|1.4.B.1e\|	5
Rear Stop lamp not working \|1.2.1b\|	5
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	5
Emissions not tested \|7.0\|	5
Offside rear brake recording little or no effort \|3.7.B.5a\|	5
Offside Front front brake binding \|3.7.B.1\|	5
Brake fluid warning lamp illuminated \|3.6.G.2\|	5
Main beam `tell-tale` not working \|1.7.4c\|	4
Nearside Rear wheel bearing has excessive play \|2.6.2\|	4
Nearside Rear Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	4
Driver`s door cannot be opened from inside the vehicle \|6.2.B.1b\|	4
Nearside Front Direction indicators not working \|1.4.A.2c\|	4
Dipswitch operation does not deflect all main beam headlamps to make them dipped beams \|1.7.4b\|	4
Offside Steering rack gaiter split \|2.2.D.2d\|	4
Nearside Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	4
Horn not loud enough to be heard by another road user \|1.6.2b\|	4
Offside Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	4
Nearside Front Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	4
Parking brake lever has no reserve travel \|3.1.6b\|	4
Hazard warning switch faulty \|1.4.B.1d\|	4
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	4
Indicator tell tale inoperative \|1.4.A.2a\|	4
Offside Rear Direction indicator not working \|1.4.A.2c\|	4
Driver`s seat cannot be secured in the upright position. \|6.2.A.2\|	4
Offside Rear Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	4
Offside Front Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	4
Offside Front Headlamp not working on main beam \|1.7.5a\|	4
Offside Rear fog lamp not working \|1.3.2b\|	4
Offside Front Shock absorber has negligible damping effect \|2.7.5\|	4
Stop lamp remains on when the brakes are released	4
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 Windscreen wiper blade deteriorated \|8.2.2\|	3
Offside Rear Anti-roll bar has excessive play in a pin/bush \|2.4.G.2\|	3
Nearside Front position lamp\|s\| adversely affected by the operation of another lamp \|1.1.A.3f\|	3
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	3
Offside Front wheel bearing rough when rotated \|2.5.A.2\|	3
Headlamp switch faulty \|1.7.1\|	3
Offside Rear position lamp\|s\| adversely affected by the operation of another lamp \|1.1.A.3f\|	3
Dipswitch operation does not extinguish all main beam headlamps leaving at least one pair of dipped beam headlamps \|1.7.4b\|	3
Parking brake: efficiency below requirements \|3.7.C.1b\|	3
Rear brake application uneven	3
Nearside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	3
Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b))	3
Offside Rear Statutory seat belt missing \|5.1.1\|	3
Offside Front position lamp\|s\| incorrect colour \|1.1.A.3e\|	3
Offside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	3
Offside Rear Rear position lamp\|s\| not working \|1.1.A.3b\|	3
Nearside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	3
Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	3
Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	3
Offside Front Anti-roll bar attachment bracket/mounting insecure \|2.4.G.1\|	3
Exhaust emissions carbon monoxide content excessive \|8.2.1.2 \|b\|\|	3
Nearside Front wheel bearing rough when rotated \|2.5.A.2\|	3
Brake pedal spongy \|3.3.B.1b\|	3
Brake performance not tested \|3.7.A.1\|	3
Nearside Front All position lamps not working \|1.1.A.3b\|	3
Fuel cap/sealing device sealing washer missing \|7.2.4c\|	3
Nearside Rear Anti-roll bar linkage rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	3
Offside Rear Anti-roll bar linkage rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	3
Offside Front Direction indicators not working \|1.4.A.2c\|	3
Nearside Rear Direction indicators not working \|1.4.A.2c\|	3
Hazard warning lamps not flashing in phase, with ignition on \|1.4.B.1f\|	3
Hazard warning lamps not flashing in phase, with ignition off \|1.4.B.1f\|	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 Front Windscreen wiper blade deteriorated \|8.2.2\|	3
Nearside Front Anti-roll bar has excessive play in a pin/bush \|2.4.G.2\|	2
Offside Front Anti-roll bar rubber mounting deteriorated resulting in excessive movement \|2.4.G.2\|	2
Nearside Rear Anti-roll bar rubber mounting deteriorated resulting in excessive movement \|2.4.G.2\|	2
Offside Rear Anti-roll bar rubber mounting deteriorated resulting in excessive movement \|2.4.G.2\|	2
Fuel cap/sealing device missing \|7.2.4a\|	2
Nearside Rear Trailing arm attachment bracket/mounting corroded and its strength is seriously reduced \|2.4.G.1\|	2
Offside Rear Trailing arm attachment bracket/mounting corroded and its strength is seriously reduced \|2.4.G.1\|	2
Offside Rear brake disc excessively pitted \|3.5.1h\|	2
Nearside Rear rear brake recording little or no effort \|3.7.B.5a\|	2
Nearside Rear brake disc excessively pitted \|3.5.1h\|	2
Rear brake disc in such a condition that it is seriously weakened	2
Nearside Steering rack gaiter split \|2.2.D.2d\|	2
Offside Stop lamp adversely affected by the operation of another lamp \|1.2.1f\|	2
Nearside Rear Direction indicator not working \|1.4.A.2c\|	2
Offside Rear Parking brake inoperative on one side (1.4.1 (a))	2
Parking brake efficiency below requirements (1.4.2 (a) (i))	2
Windscreen has damage	2
Nearside Front Windscreen wiper blade missing \|8.2.2\|	2
Offside Front Windscreen wiper blade missing \|8.2.2\|	2
Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	2
Windscreen wiper not operating automatically when switched on \|8.2.1b\|	2
Front Headlamp not working on main beam \|1.7.5a\|	2
Nearside Front Subframe mounting prescribed area is excessively corroded \|2.4.A.3\|	2
Offside Front Brake back plate\|s\| securing device excessively deteriorated \|3.5.1j\|	2
Nearside Front Lower Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	2
Nearside Rear Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement \|2.4.G.2\|	2
Nearside Rear Anti-roll bar linkage fractured \|2.4.G.1\|	2
Fuel system component leaking \|7.2.3\|	2
Fuel system component insecure \|7.2.1\|	2
Offside Front Driver`s door cannot be opened from inside the vehicle \|6.2.B.1b\|	2
Offside Rear Rear fog lamp missing \|1.3.2a\|	2
Offside Front Seat belt locking mechanism does not secure or release \|5.2.5a\|	2
Side repeater not working \|1.4.A.2c\|	2
Offside Side repeater not working \|1.4.A.2c\|	2
Rear position lamp\|s\| not working \|1.1.A.3b\|	2
Stop lamp not working \|1.2.1b\|	2
Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` \|8.3.1e\|	2
Offside Rear Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement \|2.4.G.2\|	2
Offside Obligatory mirror missing \|8.1.1\|	2
Nearside Front Shock absorber has a serious fluid leak \|2.7.3\|	2
Nearside Front Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	2
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\|	2
Offside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	2
Offside Front Shock absorber has a serious fluid leak \|2.7.3\|	2
Nearside Front Headlamp excessively damaged so that the light output is severely reduced \|1.7.5a\|	2
Front Suspension component mounting prescribed area is excessively corroded \|2.4.A.3\|	2
Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings \|6.1.B.2\|	2
Headlamp not working on main beam \|1.7.5a\|	2
Offside Rear Anti-roll bar linkage insecure \|2.4.G.1\|	2
Front Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` \|8.3.1b\|	2
Offside Front Shock absorber has an excessively worn shock absorber pivot \|2.7.4\|	2
Driver`s door does not latch securely closed \|6.2.B.1a\|	2
Nearside Front brake caliper has restricted free movement \|3.5.1k\|	2
Nearside Rear brake caliper has restricted free movement \|3.5.1k\|	2
Offside Rear brake caliper has restricted free movement \|3.5.1k\|	2
Offside Indicator tell tale inoperative \|1.4.A.2a\|	2
All position lamps not working \|1.1.A.3b\|	2
Braking system leaking \|3.6.A.1\|	2
Rear Anti-roll bar missing \|2.4.G.1\|	2
Brake pedal has insufficient reserve movement \|3.3.A.5\|	2
Offside Front Braking system leaking \|3.6.A.1\|	2
Nearside Front Headlamp aim beam image kick up to the offside \|1.8\|	2
Nearside Rear Seat belt anchorage prescribed area is excessively corroded \|5.2.6\|	2
Nearside Front Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	2
Offside Front brake caliper has restricted free movement \|3.5.1k\|	2
Nearside Track rod end ball joint has excessive play \|2.2.B.1f\|	2
Nearside Front position lamp\|s\| incorrect colour \|1.1.A.3e\|	2
Offside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.2.C.1c\|	2
Headlamp aim not tested \|1.8.A.1c\|	2
Offside Front Anti-roll bar has excessive play in a pin/bush \|2.4.G.2\|	2
Nearside Front Front wheel bearing has excessive play \|2.5.A.3c\|	2
Anti-roll bar has excessive play in a pin/bush \|2.4.G.2\|	2
Offside Rear Direction indicators not working \|1.4.A.2c\|	2
Nearside Windscreen wiper blade deteriorated \|8.2.2\|	2
Offside Windscreen wiper blade deteriorated \|8.2.2\|	2
Offside Rear Stop lamp adversely affected by the operation of another lamp \|1.2.1f\|	2
Offside Rear Anti-roll bar has excessive play in a ball joint \|2.4.G.2\|	2
Brake hose has insufficient room to move	2
Offside Obligatory mirror seriously deteriorated, affecting the rear view \|8.1.2a\|	2
Offside Rear Anti-roll bar insecure \|2.4.G.1\|	2
Rear fog lamp not working \|1.3.2b\|	2
Brake hydraulic reservoir fluid level below minimum level \|3.6.G.1b\|	2

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.

MOT History from tests of petrol PORSCHE 911s year 1977

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