MOT History from tests of petrol PORSCHE 911s year 1993

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:81.49%

(The average a petrol PORSCHE 911 year 1993 passes without issue)

Based on:6,963 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	473
Registration plate lamp issues	148
Exhaust emissions carbon monoxide content after 2nd fast idle excessive \|7.3.D.3\|	104
Exhaust emissions Lambda reading after 2nd fast idle outside specified limits \|7.3.D.3\|	90
Windscreen wiper does not clear the windscreen effectively	88
Brake hose excessively deteriorated	79
Registration plate issues	72
Offside Rear fog lamp not working \|1.3.2b\|	63
Rear fog lamp not working \|1.3.2b\|	53
Exhaust emissions carbon monoxide content at idle excessive \|7.3.D.4\|	52
Nearside Stop lamp not working \|1.2.1b\|	44
Rear fog lamp tell tale not working \|1.3.1b\|	38
Nearside Front Brake hose bulging under pressure \|3.6.B.3\|	30
Offside Stop lamp not working \|1.2.1b\|	29
Parking brake: efficiency below requirements \|3.7.B.7\|	29
Brakes imbalanced across an axle	26
Horn not working \|1.6.2a\|	24
Nearside Headlamp aim beam image kick up to the offside \|1.8\|	22
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	21
Anti-lock braking system warning lamp indicates an ABS fault	21
Exhaust emissions hydrocarbon content after 2nd fast idle excessive \|7.3.D.3\|	21
Offside Front Brake hose bulging under pressure \|3.6.B.3\|	20
Offside Rear Rear fog lamp not working \|1.3.2b\|	20
Offside Headlamp aim beam image kick up to the offside \|1.8\|	19
Nearside Rear Stop lamp not working \|1.2.1b\|	18
Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c))	17
Nearside Headlamp not working on dipped beam \|1.7.5a\|	16
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	15
Offside Front Steering rack gaiter split \|2.2.D.2d\|	15
Nearside Rear Direction indicator not working \|1.4.A.2c\|	15
Rear Rear fog lamp not working \|1.3.2b\|	14
Offside Steering rack gaiter split \|2.2.D.2d\|	14
Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b))	14
Nearside Front Steering rack gaiter split \|2.2.D.2d\|	13
Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a))	12
Offside Front brake disc excessively pitted \|3.5.1h\|	12
Nearside Steering rack gaiter split \|2.2.D.2d\|	12
Offside Rear Stop lamp not working \|1.2.1b\|	12
Offside Headlamp not working on dipped beam \|1.7.5a\|	11
Nearside Front Brake hose leaking \|3.6.A.1\|	11
Nearside Rear Shock absorber has a serious fluid leak \|2.7.3\|	11
Nearside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.4.G.2\|	10
Front brake application uneven	9
Supplementary Restraint System warning lamp indicates a fault \|5.4.2\|	9
Service brake: efficiency below requirements \|3.7.B.7\|	9
Offside Side repeater incorrect colour \|1.4.A.2f\|	9
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	9
Offside Front Brake hose leaking \|3.6.A.1\|	9
Nearside Front brake disc excessively pitted \|3.5.1h\|	8
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	8
Rear fog lamp not working (4.5.1 (a) (ii))	8
Front brake disc in such a condition that it is seriously weakened	8
Rear parking brake recording little or no effort	8
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	8
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	8
Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` \|8.3.1e\|	8
Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b))	7
Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b))	7
Exhaust Lambda reading after 2nd fast idle outside specified limits \|8.2.1.2 \|c\|\|	7
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	7
Offside Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	7
Front passenger door cannot be opened from inside the vehicle \|6.2.B.1b\|	7
Fuel cap/sealing device sealing washer deteriorated \|7.2.4c\|	7
Exhaust emissions carbon monoxide content excessive \|7.3.B.1a\|	7
Offside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.4.G.2\|	7
Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturer`s specified limits \|8.2.1.2 \|a\|\|	7
Offside Rear Shock absorber has a serious fluid leak \|2.7.3\|	6
Mechanical brake component has restricted free movement	6
Nearside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.4.G.2\|	6
Windscreen washer not working	6
Emissions not tested \|7.0\|	6
Parking brake: efficiency below requirements \|3.7.C.1b\|	6
Offside Side repeater not working \|1.4.A.2c\|	6
Offside Headlamp not working on main beam \|1.7.5a\|	6
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	6
Exhaust catalytic converter missing where one was fitted as standard \|7.1.3\|	5
Offside Front Position lamp not working \|4.2.1 \|a\|\|	5
Offside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.4.G.2\|	5
Rear brake binding	5
Nearside Headlamp not working on main beam \|1.7.5a\|	5
Nearside Front Macpherson strut has excessive movement at the upper attachment \|2.5.A.1c\|	5
Nearside Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	5
Offside Front Headlamp not working on dipped beam \|1.7.5a\|	5
Exhaust carbon monoxide content after 2nd fast idle exceeds default limits \|8.2.1.2 \|b\|\|	5
Battery insecure \|1.9.1\|	5
Nearside Side repeater not working \|1.4.A.2c\|	5
Offside Front Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	5
Brake performance not tested \|3.7.A.1\|	5
Headlamp switch faulty \|1.7.1\|	5
Nearside Rear position lamp\|s\| adversely affected by the operation of another lamp \|1.1.A.3f\|	5
Offside Front Direction indicator not working \|1.4.A.2c\|	5
Offside Windscreen wiper blade deteriorated \|8.2.2\|	4
Rear brake disc in such a condition that it is seriously weakened	4
Offside Side repeater insecure \|1.4.A.2b\|	4
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))	4
Nearside Front Position lamp not working (4.2.1 (a) (ii))	4
Offside Front Macpherson strut has excessive movement at the upper attachment \|2.5.A.1c\|	4
Windscreen has damage	4
Offside Front Shock absorber has negligible damping effect \|2.7.5\|	4
Offside Rear Wheel nut\|s\| missing \|4.2.A.1e\|	4
Offside Front Direction indicator incorrect colour \|1.4.A.2f\|	4
Nearside Rear Drive shaft which forms part of the suspension coupling gaiter damaged to the extent that it no longer prevents the ingress of dirt etc \|2.4.G.4e\|	4
Rear Exhaust emissions carbon monoxide content after 2nd fast idle excessive \|7.3.D.3\|	4
Service brake: efficiency below requirements \|3.7.C.1a\|	4
Stop lamp remains on when the brakes are released	4
Nearside Side repeater insecure \|1.4.A.2b\|	4
Brake fluid warning lamp illuminated \|3.6.G.2\|	4
Nearside Front Headlamp aim beam image kick up to the offside \|1.8\|	4
Offside Front Headlamp aim beam image kick up to the offside \|1.8\|	4
Centre Stop lamp not working \|1.2.1b\|	4
Nearside Side repeater incorrect colour \|1.4.A.2f\|	4
Nearside Front Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	4
Power steering component\|s\| leaking \|2.3.3b\|	4
Nearside Stop lamp adversely affected by the operation of another lamp \|1.2.1f\|	4
Nearside Rear Brake hose leaking \|3.6.A.1\|	4
Rear fog lamp switch faulty \|1.3.1a\|	4
Oil leaking excessively from engine (8.4.1 (a) (i))	4
Parking brake efficiency below requirements (1.4.2 (a) (i))	4
Parking brake efficiency below requirements \|1.4.2 \|a\| \|i\|\|	4
Exhaust carbon monoxide content at idle exceeds default limits \|8.2.1.2 \|b\|\|	4
Front passenger door cannot be opened from outside the vehicle \|6.2.B.1b\|	4
Nearside Stop lamp(s) not working (4.3.1 (a) (ii))	4
Nearside Rear Direction indicators not working \|1.4.A.2c\|	4

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	473
Registration plate lamp issues	148
Exhaust emissions carbon monoxide content after 2nd fast idle excessive \|7.3.D.3\|	104
Exhaust emissions Lambda reading after 2nd fast idle outside specified limits \|7.3.D.3\|	90
Windscreen wiper does not clear the windscreen effectively	88
Brake hose excessively deteriorated	79
Registration plate issues	72
Offside Rear fog lamp not working \|1.3.2b\|	63
Rear fog lamp not working \|1.3.2b\|	53
Exhaust emissions carbon monoxide content at idle excessive \|7.3.D.4\|	52
Nearside Stop lamp not working \|1.2.1b\|	44
Rear fog lamp tell tale not working \|1.3.1b\|	38
Nearside Front Brake hose bulging under pressure \|3.6.B.3\|	30
Offside Stop lamp not working \|1.2.1b\|	29
Parking brake: efficiency below requirements \|3.7.B.7\|	29
Brakes imbalanced across an axle	26
Horn not working \|1.6.2a\|	24
Nearside Headlamp aim beam image kick up to the offside \|1.8\|	22
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	21
Anti-lock braking system warning lamp indicates an ABS fault	21
Exhaust emissions hydrocarbon content after 2nd fast idle excessive \|7.3.D.3\|	21
Offside Front Brake hose bulging under pressure \|3.6.B.3\|	20
Offside Rear Rear fog lamp not working \|1.3.2b\|	20
Offside Headlamp aim beam image kick up to the offside \|1.8\|	19
Nearside Rear Stop lamp not working \|1.2.1b\|	18
Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c))	17
Nearside Headlamp not working on dipped beam \|1.7.5a\|	16
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	15
Offside Front Steering rack gaiter split \|2.2.D.2d\|	15
Nearside Rear Direction indicator not working \|1.4.A.2c\|	15
Rear Rear fog lamp not working \|1.3.2b\|	14
Offside Steering rack gaiter split \|2.2.D.2d\|	14
Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b))	14
Nearside Front Steering rack gaiter split \|2.2.D.2d\|	13
Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a))	12
Offside Front brake disc excessively pitted \|3.5.1h\|	12
Nearside Steering rack gaiter split \|2.2.D.2d\|	12
Offside Rear Stop lamp not working \|1.2.1b\|	12
Offside Headlamp not working on dipped beam \|1.7.5a\|	11
Nearside Front Brake hose leaking \|3.6.A.1\|	11
Nearside Rear Shock absorber has a serious fluid leak \|2.7.3\|	11
Nearside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.4.G.2\|	10
Front brake application uneven	9
Supplementary Restraint System warning lamp indicates a fault \|5.4.2\|	9
Service brake: efficiency below requirements \|3.7.B.7\|	9
Offside Side repeater incorrect colour \|1.4.A.2f\|	9
Nearside Rear position lamp\|s\| not working \|1.1.A.3b\|	9
Offside Front Brake hose leaking \|3.6.A.1\|	9
Nearside Front brake disc excessively pitted \|3.5.1h\|	8
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	8
Rear fog lamp not working (4.5.1 (a) (ii))	8
Front brake disc in such a condition that it is seriously weakened	8
Rear parking brake recording little or no effort	8
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	8
Offside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	8
Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` \|8.3.1e\|	8
Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b))	7
Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b))	7
Exhaust Lambda reading after 2nd fast idle outside specified limits \|8.2.1.2 \|c\|\|	7
Nearside Rear position lamp\|s\| excessively deteriorated so that it is not visible from a reasonable distance \|1.1.A.3d\|	7
Offside Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	7
Front passenger door cannot be opened from inside the vehicle \|6.2.B.1b\|	7
Fuel cap/sealing device sealing washer deteriorated \|7.2.4c\|	7
Exhaust emissions carbon monoxide content excessive \|7.3.B.1a\|	7
Offside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt \|2.4.G.2\|	7
Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturer`s specified limits \|8.2.1.2 \|a\|\|	7
Offside Rear Shock absorber has a serious fluid leak \|2.7.3\|	6
Mechanical brake component has restricted free movement	6
Nearside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.4.G.2\|	6
Windscreen washer not working	6
Emissions not tested \|7.0\|	6
Parking brake: efficiency below requirements \|3.7.C.1b\|	6
Offside Side repeater not working \|1.4.A.2c\|	6
Offside Headlamp not working on main beam \|1.7.5a\|	6
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	6
Exhaust catalytic converter missing where one was fitted as standard \|7.1.3\|	5
Offside Front Position lamp not working \|4.2.1 \|a\|\|	5
Offside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt \|2.4.G.2\|	5
Rear brake binding	5
Nearside Headlamp not working on main beam \|1.7.5a\|	5
Nearside Front Macpherson strut has excessive movement at the upper attachment \|2.5.A.1c\|	5
Nearside Headlamp not in good working order adversely affecting beam image \|1.2.4a\|	5
Offside Front Headlamp not working on dipped beam \|1.7.5a\|	5
Exhaust carbon monoxide content after 2nd fast idle exceeds default limits \|8.2.1.2 \|b\|\|	5
Battery insecure \|1.9.1\|	5
Nearside Side repeater not working \|1.4.A.2c\|	5
Offside Front Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	5
Brake performance not tested \|3.7.A.1\|	5
Headlamp switch faulty \|1.7.1\|	5
Nearside Rear position lamp\|s\| adversely affected by the operation of another lamp \|1.1.A.3f\|	5
Offside Front Direction indicator not working \|1.4.A.2c\|	5
Offside Windscreen wiper blade deteriorated \|8.2.2\|	4
Rear brake disc in such a condition that it is seriously weakened	4
Offside Side repeater insecure \|1.4.A.2b\|	4
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))	4
Nearside Front Position lamp not working (4.2.1 (a) (ii))	4
Offside Front Macpherson strut has excessive movement at the upper attachment \|2.5.A.1c\|	4
Windscreen has damage	4
Offside Front Shock absorber has negligible damping effect \|2.7.5\|	4
Offside Rear Wheel nut\|s\| missing \|4.2.A.1e\|	4
Offside Front Direction indicator incorrect colour \|1.4.A.2f\|	4
Nearside Rear Drive shaft which forms part of the suspension coupling gaiter damaged to the extent that it no longer prevents the ingress of dirt etc \|2.4.G.4e\|	4
Rear Exhaust emissions carbon monoxide content after 2nd fast idle excessive \|7.3.D.3\|	4
Service brake: efficiency below requirements \|3.7.C.1a\|	4
Stop lamp remains on when the brakes are released	4
Nearside Side repeater insecure \|1.4.A.2b\|	4
Brake fluid warning lamp illuminated \|3.6.G.2\|	4
Nearside Front Headlamp aim beam image kick up to the offside \|1.8\|	4
Offside Front Headlamp aim beam image kick up to the offside \|1.8\|	4
Centre Stop lamp not working \|1.2.1b\|	4
Nearside Side repeater incorrect colour \|1.4.A.2f\|	4
Nearside Front Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	4
Power steering component\|s\| leaking \|2.3.3b\|	4
Nearside Stop lamp adversely affected by the operation of another lamp \|1.2.1f\|	4
Nearside Rear Brake hose leaking \|3.6.A.1\|	4
Rear fog lamp switch faulty \|1.3.1a\|	4
Oil leaking excessively from engine (8.4.1 (a) (i))	4
Parking brake efficiency below requirements (1.4.2 (a) (i))	4
Parking brake efficiency below requirements \|1.4.2 \|a\| \|i\|\|	4
Exhaust carbon monoxide content at idle exceeds default limits \|8.2.1.2 \|b\|\|	4
Front passenger door cannot be opened from outside the vehicle \|6.2.B.1b\|	4
Nearside Stop lamp(s) not working (4.3.1 (a) (ii))	4
Nearside Rear Direction indicators not working \|1.4.A.2c\|	4

MOT History from tests of petrol PORSCHE 911s year 1993

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