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MOT History from tests of petrol PORSCHE 911s year 1974

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:78.93%
(The average a petrol PORSCHE 911 year 1974 passes without issue)
Based on:916 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment71
Registration plate lamp issues35
Windscreen wiper does not clear the windscreen effectively24
Horn not working |1.6.2a|17
Registration plate issues13
Parking brake: efficiency below requirements |3.7.B.7|11
Brake hose excessively deteriorated10
Brakes imbalanced across an axle9
Rear brake binding8
Offside Headlamp not working on main beam |1.7.5a|8
Rear parking brake recording little or no effort8
Offside Front position lamp|s| not working |1.1.A.3b|8
Service brake: efficiency below requirements |3.7.B.7|8
Brake pipe excessively corroded7
Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|7
Nearside Headlamp aim beam image kick up to the offside |1.8|7
Offside Headlamp aim beam image kick up to the offside |1.8|7
Headlamp aim beam image kick up to the offside |1.8|6
Nearside Stop lamp not working |1.2.1b|6
Offside Stop lamp not working |1.2.1b|6
Nearside Front position lamp|s| not working |1.1.A.3b|6
Offside Headlamp not working on dipped beam |1.7.5a|5
Nearside Headlamp not working on main beam |1.7.5a|5
Nearside Front position lamp|s| incorrect colour |1.1.A.3e|5
Offside Front position lamp|s| incorrect colour |1.1.A.3e|5
Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|5
Nearside Front Headlamp not working on dipped beam |1.7.5a|5
Nearside Headlamp not working on dipped beam |1.7.5a|4
Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|4
Nearside Rear Stop lamp not working |1.2.1b|4
Indicator switch faulty |1.4.A.1|4
Offside Steering rack gaiter split |2.2.D.2d|4
Front Windscreen wiper not operating automatically when switched on |8.2.1b|4
Offside Front Direction indicator not working |1.4.A.2c|4
Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6|4
Rear Exhaust has a major leak of exhaust gases |7.1.2|3
Nearside rear brake recording little or no effort |3.7.B.5a|3
Parking brake lever has no reserve travel |3.1.6b|3
Offside Front Headlamp not working on dipped beam |1.7.5a|3
Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b|3
Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b|3
Offside Front front brake binding |3.7.B.1|3
Front brake application uneven3
Direction indicators not working |1.4.A.2c|3
Nearside Front Headlamp not working on main beam |1.7.5a|3
Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|3
Stop lamp remains on when the brakes are released3
Offside Front Headlamp not working on main beam |1.7.5a|3
Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6|3
Nearside Rear brake caliper has restricted free movement |3.5.1k|2
Nearside Seat belt damaged sufficient to significantly weakened the webbing |5.2.2a|2
Offside Rear position lamp|s| not working |1.1.A.3b|2
Nearside Front wheel bearing rough when rotated |2.5.A.2|2
Headlamp switch faulty |1.7.1|2
Offside Front Front position lamp|s| not working |1.1.A.3b|2
Parking brake: efficiency below requirements |3.7.C.1b|2
Nearside Front wheel bearing has excessive play |2.5.A.3c|2
Nearside Rear position lamp|s| not working |1.1.A.3b|2
Rear Anti-roll bar missing |2.4.G.1|2
Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b|2
Offside Headlamp aim beam image obviously incorrect |1.8.A.1b|2
Battery insecure |1.9.1|2
Headlamp not working on main beam |1.7.5a|2
Fuel hose leaking |7.2.3|2
Hazard warning tell tale not working correctly |1.4.B.1e|2
Nearside Front front brake binding |3.7.B.1|2
Offside Front Steering rack gaiter split |2.2.D.2d|2
Nearside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2|2
Rear Mechanical brake component has restricted free movement2
Nearside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2|2
Offside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2|2
Offside Rear Stop lamp not working |1.2.1b|2
Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|2
Nearside Steering rack gaiter split |2.2.D.2d|2
Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Nearside Front Front position lamp|s| not working |1.1.A.3b|2
Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|2
Offside Obligatory mirror missing |8.1.1|2
Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3|2
Nearside Front Front wheel bearing has excessive play |2.5.A.3c|2
Position lamp switch insecure |1.1.A.1|2
Nearside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6|2
Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|2
Hazard warning lamps inoperative |1.4.B.1b|2
Nearside Front Brake hose bulging under pressure |3.6.B.3|2
Offside Rear rear brake recording little or no effort |3.7.B.5a|2
Nearside Rear Brake hose bulging under pressure |3.6.B.3|2
Offside Rear Brake hose bulging under pressure |3.6.B.3|2
Brake hose has insufficient room to move2
Nearside Front brake caliper has restricted free movement |3.5.1k|1
Offside Front brake caliper has restricted free movement |3.5.1k|1
Offside Rear brake caliper securing device excessively deteriorated |3.5.1j|1
Nearside Direction indicator not working |1.4.A.2c|1
Offside Direction indicator not working |1.4.A.2c|1
Offside Front wheel bearing rough when rotated |2.5.A.2|1
Exhaust emits dense blue smoke at idle |7.3.A.2b|1
Rear Exhaust system not adequately supported |7.1.1|1
Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Service brake is causing the vehicle to swerve to the nearside |3.7.C.2|1
Brake lever locking device missing |3.5.1l|1
Horn control not readily accessible to the driver |1.6.1|1
Nearside Rear Driver`s seat cannot be secured in the upright position. |6.2.A.2|1
Offside Rear Driver`s seat cannot be secured in the upright position. |6.2.A.2|1
Nearside Front Lower Ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c|1
Nearside Rear Brake linkage has restricted free movement |3.5.1k|1
Brake pipe leaking |3.6.A.1|1
Nearside Brake linkage has restricted free movement |3.5.1k|1
Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a|1
Offside Headlamp not in good working order adversely affecting beam image |1.2.4a|1
Stop lamp not working |1.2.1b|1
Nearside Front Headlamp aim beam image kick up to the offside |1.8|1
Offside Front Headlamp aim beam image kick up to the offside |1.8|1
Nearside Front Steering system fouling track rod end fouls brake pipe |2.2.D.2a|1
Nearside Rear Brake hose leaking |3.6.A.1|1
Nearside Front Suspension component mounting prescribed area is excessively corroded torsion bar mounting point |2.4.A.3|1
Offside Front Suspension component mounting prescribed area is excessively corroded torsion bar mounting point |2.4.A.3|1
Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings chassis leg at shock mounting |6.1.B.2|1
Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings floor pan at rack mounting point |6.1.B.2|1
Offside Rear Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2|1
Nearside Rear Brake hose damaged and likely to fail |1.1.12 |a||1
Nearside Rear Brake pipe excessively damaged |1.1.11 |c||1
All direction indicators not working |4.4.1 |a| |ii||1
Rear Stop lamp|s| all not working |4.3.1 |a| |iii||1
Windscreen washer not working 1
Steering wheel retaining device insecure loose |2.1.6|1
Nearside Front Direction indicators incorrect colour |1.4.A.2f|1
Offside Front Direction indicators missing |1.4.A.2b|1
Horn not loud enough to be heard by another road user |1.6.2b|1
Offside Rear Shock absorber has a serious fluid leak |2.7.3|1
Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f|1
Nearside Stop lamp adversely affected by the operation of another lamp |1.2.1f|1
Nearside Rear Direction indicator adversely affected by the operation of another lamp |1.4.A.2h|1
Main beam `tell-tale` not working |1.7.4c|1
Direction indicators flashing less than 60 times a minute |1.4.A.2g|1
Nearside Headlamp flickers when tapped lightly by hand |1.2.4c|1
Offside Front Direction indicator not working (4.4.1 (a) (ii))1
Nearside Track rod end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii))1
Offside Track rod end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii))1
Front All position lamps not working |1.1.A.3b|1
Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f|1
Driver`s door cannot be opened from outside the vehicle |6.2.B.1b|1
Dipswitch operation does not extinguish all main beam headlamps leaving at least one pair of dipped beam headlamps |1.7.4b|1
Offside Front Lower Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2|1
Offside front brake binding |3.7.B.1|1
Nearside Front Braking system leaking |3.6.A.1|1
Nearside Rear Braking system leaking |3.6.A.1|1
Front Anti-roll bar rubber mounting deteriorated resulting in excessive movement |2.4.G.2|1
Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2|1
Offside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2|1
Steering wheel retaining device insecure |2.1.6|1
Offside Indicator switch faulty |1.4.A.1|1
Nearside Front Front position lamp|s| incorrect colour |1.1.A.3e|1
Nearside Inner Front Track rod end ball joint has excessive play |2.2.B.1f|1
Mechanical brake component has restricted free movement1
Nearside Rear Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2|1
Offside Rear Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2|1
Offside Front Front wheel bearing has excessive play |2.5.A.3c|1
Rear Exhaust has part of the system excessively deteriorated |7.1.1a|1
Driver`s seat insecure |6.2.A.1|1
Nearside Front Lower Front position lamp|s| not working |1.1.A.3b|1
Nearside Front Headlamp does not operate immediately when selected on main beam |1.7.4a|1
Offside Front Headlamp does not operate immediately when selected on main beam |1.7.4a|1
Nearside Rear Front constant velocity joint gaiter insecurely mounted to its housing |2.5.C.1a|1
Nearside Front Direction indicator not working |1.4.A.2c|1
Nearside Rear Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2|1
Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` |8.3.1b|1
Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e|1
Offside Front Front wheel bearing rough when rotated |2.5.A.2|1
Offside Front Position lamp not working |4.2.1 |a||1
Nearside Front Direction indicator adversely affected by the operation of another lamp |1.4.A.2h|1
Offside Front Direction indicator adversely affected by the operation of another lamp |1.4.A.2h|1
Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3|1
Nearside Front Subframe mounting prescribed area is inadequately repaired |2.4.A.3|1
Offside Front Subframe mounting prescribed area is inadequately repaired |2.4.A.3|1
Offside Rear Suspension component mounting prescribed area is fractured |2.4.A.3|1
Rear Fuel hose leaking |7.2.3|1
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|1
Offside Front wheel bearing has excessive play |2.5.A.3c|1
Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i))1
Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i))1
Offside Rear Wheel bearing has excessive play (5.1.3 (a) (i))1
Nearside Rear Road wheel more than one fixing missing x 2 (5.2.1 (a) (ii))1
Offside Rear Road wheel more than one fixing missing x 2 (5.2.1 (a) (ii))1
Horn not working (7.7 (a) (ii))1
Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))1
Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))1
Windscreen wiper not operating automatically when switched on |8.2.1b|1
Nearside Rear Fuel system component leaking fuel pump |7.2.3|1
Offside Front Suspension component mounting prescribed area is excessively corroded near fuel tank |2.4.A.3|1
Offside Front Suspension component mounting prescribed area is excessively corroded upper strut |2.4.A.3|1
Offside Rear position lamp|s| missing |1.1.A.3a|1
Nearside Front Steering locking device missing |2.2.C.1g|1
Offside Stop lamp adversely affected by the operation of another lamp |1.2.1f|1
Offside Direction indicator adversely affected by the operation of another lamp |1.4.A.2h|1
Offside Front position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f|1
Offside Rear wheel bearing has excessive play |2.6.2|1
Steering wheel in a condition that hampers proper control |2.1.1|1
Offside Rear Anti-roll bar linkage insecure |2.4.G.1|1
Offside Rear Direction indicator has less than 50% of the light sources illuminating |1.4.A.2c|1
Rear Anti-roll bar insecure |2.4.G.1|1
Hydraulic brake cylinder leaking hydraulic fluid |3.6.A.1|1
Offside Rear Direction indicator adversely affected by the operation of another lamp |1.4.A.2h|1
Nearside Front Suspension component mounting prescribed area is excessively corroded anti roll bar mounting |2.4.A.3|1
Windscreen wiper not working |3.4 |a||1
All direction indicators not working (4.4.1 (a) (ii))1
Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b))1
Horn not working (7.7 (a))1
Windscreen washer jets misaligned and not providing sufficient fluid to the windscreen (3.5 (a))1
Driver`s seat cannot be secured in the upright position. |6.2.A.2|1
Offside Obligatory mirror is incapable of being adjusted to provide an adequate view to the rear |8.1.2b|1
Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f|1
Nearside Stop lamp(s) not working (4.3.1 (a) (ii))1
Nearside Front Service brake excessively binding (1.2.1 (f))1
Offside Front Service brake excessively binding (1.2.1 (f))1
Offside Rear Service brake excessively binding (1.2.1 (f))1
Nearside Front Service brake effort inadequate at a wheel (1.2.1 (a) (i))1
Offside Front Service brake effort inadequate at a wheel (1.2.1 (a) (i))1
Service brake efficiency below requirements (1.2.2 (a) (i))1
Parking brake efficiency below requirements (1.4.2 (a) (i))1
Offside Front Side repeater not working |1.4.A.2c|1
Front position lamp|s| not in good working order |function impaired| |1.1.4a|1
Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a|1
Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2|1
Nearside Front Lower Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2|1
Offside Front Lower Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2|1
Exhaust engine idle speed too high |7.3.A.2a|1
Offside Rear Rear position lamp|s| not working |1.1.A.3b|1
Nearside Front Front passenger door cannot be opened from outside the vehicle |6.2.B.1b|1
Nearside Front position lamp|s| not in good working order |function impaired| |1.1.4a|1
Stop lamp adversely affected by the operation of another lamp |1.2.1f|1
Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii))1
Headlamp not working on dipped beam Both |1.7.5a|1
Headlamp not working on main beam Both |1.7.5a|1
Headlamp aim not tested |1.8.A.1c|1
Fuel system component leaking |7.2.3|1
Brake clevis joint insecure |3.5.1d|1
Rear Drive shaft uj which forms part of the suspension has a loose flange bolt |2.4.G.4c|1
Nearside Front Shock absorber has negligible damping effect |2.7.5|1
Offside Front Shock absorber has negligible damping effect |2.7.5|1
Nearside Rear wheel bearing rough when rotated |2.6.1|1
Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Offside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Offside Front Steering locking device missing |2.2.C.1g|1
Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a|1
Front Braking system leaking |3.6.A.1|1
Offside Rear Direction indicator not working |1.4.A.2c|1
Nearside front brake binding |3.7.B.1|1
Front position lamp|s| not working |1.1.A.3b|1
Front passenger seat insecure |6.2.3|1
Nearside Front Brake pipe inadequately clipped |3.6.B.1|1
Front Fuel system component leaking |7.2.3|1
Offside Rear Anti-roll bar linkage cracked |2.4.G.1|1
Horn not working |7.7 |a| |ii||1
Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f|1
Front Driver`s seat cannot be secured in the upright position. |6.2.A.2|1
All position lamps not in good working order |function impaired| |1.1.A.2a|1
Front wheel bearing rough when rotated |2.5.A.2|1
Nearside Rear Anti-roll bar insecure |2.4.G.1|1
Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|1
Rear Rear passenger seat cannot be secured in the upright position. |6.2.3|1
Nearside Front Statutory seat belt missing |5.1.1|1
Offside Front Statutory seat belt missing |5.1.1|1
Rear Stop lamp not working |1.2.1b|1
Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|1
Offside Rear Exhaust has a major leak of exhaust gases |7.1.2|1
Front Direction indicators not working |1.4.A.2c|1
Rear Direction indicators not working |1.4.A.2c|1
Nearside Front Steering rack gaiter split |2.2.D.2d|1
Nearside Rear Suspension arm attachment bracket/mounting likely to become detached bolt loose (5.3.3 (a) (ii))1
Nearside Rear Suspension arm attachment bracket/mounting likely to become detached bolt missing (5.3.3 (a) (ii))1
Offside Rear Suspension arm attachment bracket/mounting likely to become detached bolt loose (5.3.3 (a) (ii))1
Offside Rear Suspension arm attachment bracket/mounting likely to become detached bolt missing (5.3.3 (a) (ii))1
Position lamp not working all position lamps (4.2.1 (a) (ii))1
Nearside Rear Direction indicator not working |1.4.A.2c|1
Centre Front Upper Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e|1
Nearside Rear Suspension component mounting prescribed area is fractured |2.4.A.3|1
Nearside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c|1
Front passenger door cannot be opened from inside the vehicle |6.2.B.1b|1
Offside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Offside Windscreen wiper blade deteriorated |8.2.2|1
Front Steering wheel locking device insecure |2.1.6|1
Centre Obligatory mirror missing |8.1.1|1
Nearside Rear Anti-roll bar has excessive play in a ball joint |2.4.G.2|1
Offside Rear Anti-roll bar has excessive play in a ball joint |2.4.G.2|1
Nearside Front Brake pipe fouled by moving parts |3.6.B.2a|1
Rear Headlamp not working on dipped beam |1.7.5a|1
Front Headlamp not working on main beam |1.7.5a|1
Nearside Rear Direction indicator incorrect colour |1.4.A.2f|1
Offside Rear Direction indicator incorrect colour |1.4.A.2f|1
Nearside Rear Suspension component mounting prescribed area is inadequately repaired |2.4.A.3|1
Offside Rear Suspension component mounting prescribed area is inadequately repaired |2.4.A.3|1
Headlamp aim beam image obviously incorrect |1.8.A.1b|1
brake disc in such a condition that it is seriously weakened |3.5.1i|1
Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Offside Indicator tell tale inoperative |1.4.A.2a|1
Nearside Front Suspension weakened allowing body or other component to foul a road wheel or would do so if laden |2.4.A.1b|1
Offside Suspension weakened allowing body or other component to foul a road wheel or would do so if laden |2.4.A.1b|1

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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