MOT Results

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Porsche 911 MOT Results

81.8% pass rate
from 3,810 tests in 2021
(32% better than other pre-1990 cars)
Number of tests by age
More MoT Results
Failure rates by item

Here you can drill down into the failure rates for each item on the test. We've also compared the rates to the average results for pre-1990 cars and highlighted areas where the Porsche 911 is unusually good or bad.

  • 10% fail on Lamps, reflectors and electrical equipment (19% better than other pre-1990 cars)
    • 3.8% fail on Headlamp aim
      • 3.6% fail on Headlamp aim
      • 0.18% fail on Headlamp aim not tested
    • 3.5% fail on Front and rear fog lamps (51% worse than other pre-1990 cars)
      • 3.5% fail on Rear fog lamp (51% worse than other pre-1990 cars)
        • 3.5% fail on Rear fog lamp (51% worse than other pre-1990 cars)
        • 0.026% fail on Switch
    • 1.7% fail on Direction indicators (39% better than other pre-1990 cars)
      • 1.7% fail on Flashing type (38% better than other pre-1990 cars)
        • 1.0% fail on Individual direction indicators (36% better than other pre-1990 cars)
        • 0.47% fail on Side repeaters
        • 0.24% fail on All direction indicators (56% better than other pre-1990 cars)
    • 1.6% fail on Headlamps (47% better than other pre-1990 cars)
      • 1.2% fail on Headlamp (59% better than other pre-1990 cars)
      • 0.24% fail on Dipswitch
      • 0.18% fail on Headlamp levelling device (3 times worse than other pre-1990 cars)
    • 1.2% fail on Stop lamp (50% better than other pre-1990 cars)
    • 1.00% fail on Electrical equipment (45% better than other pre-1990 cars)
      • 0.79% fail on Horn
      • 0.18% fail on Battery(ies) (69% better than other pre-1990 cars)
      • 0.052% fail on Electrical wiring
    • 0.76% fail on Registration plate lamp(s) (39% better than other pre-1990 cars)
    • 0.29% fail on Mandatory tell-tales
      • 0.24% fail on Rear fog lamp tell-tale
      • 0.052% fail on Main beam tell-tale
    • 0.10% fail on Hazard warning
      • 0.10% fail on Switch
  • 4.9% fail on Visibility (23% better than other pre-1990 cars)
    • 4.0% fail on Washers
    • 1.1% fail on Wipers (56% better than other pre-1990 cars)
    • 0.052% fail on Bonnet
    • 0.052% fail on View to rear
      • 0.052% fail on Mirrors
  • 3.7% fail on Brakes (59% better than other pre-1990 cars)
    • 2.9% fail on Brake performance (57% better than other pre-1990 cars)
      • 1.6% fail on Service brake performance (46% better than other pre-1990 cars)
        • 1.6% fail on Rbt (46% better than other pre-1990 cars)
          • 1.5% fail on Service brake performance (40% better than other pre-1990 cars)
          • 0.18% fail on Service brake imbalance (74% better than other pre-1990 cars)
        • 0.079% fail on Decelerometer
          • 0.079% fail on Service brake performance
      • 0.66% fail on Service Brake Efficiency (sp) (78% better than other pre-1990 cars)
        • 0.66% fail on Rbt (sp) (77% better than other pre-1990 cars)
          • 0.52% fail on Service brake performance (59% better than other pre-1990 cars)
          • 0.13% fail on Service brake imbalance (93% better than other pre-1990 cars)
      • 0.63% fail on Parking brake efficiency (sp) (77% better than other pre-1990 cars)
        • 0.58% fail on Rbt (sp) (77% better than other pre-1990 cars)
        • 0.026% fail on Decelerometer (sp)
        • 0.026% fail on Plate brake tester (sp)
      • 0.39% fail on Parking brake performance (61% better than other pre-1990 cars)
        • 0.39% fail on Rbt (59% better than other pre-1990 cars)
          • 0.34% fail on Parking brake performance (53% better than other pre-1990 cars)
          • 0.052% fail on Parking (secondary brake performance) (79% better than other pre-1990 cars)
          • 0.026% fail on Parking brake efficiency (Trikes, quads and pre-68 vehicles)
      • 0.21% fail on Brake performance not tested
    • 0.29% fail on Flexible brake hoses
    • 0.21% fail on Mechanical brake components (71% better than other pre-1990 cars)
      • 0.10% fail on Brake linings and pads (69% better than other pre-1990 cars)
        • 0.10% fail on Brake pads
      • 0.079% fail on Brake discs and drums (74% better than other pre-1990 cars)
        • 0.052% fail on Brake discs (79% better than other pre-1990 cars)
        • 0.026% fail on Brake drums
      • 0.052% fail on Brake cables, rods, levers and linkages
        • 0.052% fail on Cable
    • 0.13% fail on ABS / EBS / ESC
      • 0.13% fail on Anti-lock braking system
    • 0.10% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.052% fail on Hydraulic brake callipers
      • 0.052% fail on Hydraulic brake cylinder
    • 0.079% fail on Service brake pedal or hand lever (85% better than other pre-1990 cars)
      • 0.052% fail on Pedal (87% better than other pre-1990 cars)
      • 0.026% fail on Hand lever
    • 0.079% fail on Rigid brake pipes (93% better than other pre-1990 cars)
    • 0.052% fail on Parking brake control (82% better than other pre-1990 cars)
      • 0.052% fail on Lever (82% better than other pre-1990 cars)
    • 0.052% fail on Hydraulic systems (80% better than other pre-1990 cars)
      • 0.052% fail on Brake fluid
  • 2.0% fail on Body, chassis, structure (68% better than other pre-1990 cars)
    • 1.1% fail on Transmission
      • 1.0% fail on Drive shafts
        • 1.00% fail on Joints
        • 0.079% fail on Drive shaft
      • 0.10% fail on Prop shafts
        • 0.10% fail on Joints
    • 0.24% fail on Exhaust system (87% better than other pre-1990 cars)
    • 0.21% fail on Fuel system (74% better than other pre-1990 cars)
      • 0.13% fail on Fuel cap/sealing device
      • 0.052% fail on Pipe (83% better than other pre-1990 cars)
      • 0.026% fail on Tank
    • 0.21% fail on Doors (58% better than other pre-1990 cars)
      • 0.13% fail on Front passenger's door
        • 0.13% fail on Door condition
      • 0.079% fail on Driver's door
        • 0.079% fail on Door condition
    • 0.13% fail on Seats (79% better than other pre-1990 cars)
      • 0.079% fail on Driver's seat (84% better than other pre-1990 cars)
      • 0.052% fail on Passenger's seat (80% better than other pre-1990 cars)
    • 0.079% fail on Chassis (91% better than other pre-1990 cars)
      • 0.079% fail on Chassis condition (91% better than other pre-1990 cars)
    • 0.052% fail on Integral vehicle structure (95% better than other pre-1990 cars)
      • 0.052% fail on Integral vehicle structure condition (95% better than other pre-1990 cars)
    • 0.052% fail on Boot lid
      • 0.026% fail on Boot lid condition
      • 0.026% fail on Other boot lid component
    • 0.026% fail on Load security
      • 0.026% fail on Access panel
    • 0.026% fail on Cabs
      • 0.026% fail on Prescribed areas
  • 1.9% fail on Noise, emissions and leaks (58% better than other pre-1990 cars)
    • 1.6% fail on Exhaust emissions (59% better than other pre-1990 cars)
      • 1.6% fail on Spark ignition (57% better than other pre-1990 cars)
        • 1.2% fail on Non catalyst emissions (62% better than other pre-1990 cars)
        • 0.31% fail on Catalyst emissions
        • 0.10% fail on Emissions not tested (73% better than other pre-1990 cars)
      • 0.052% fail on Compression ignition (81% better than other pre-1990 cars)
        • 0.026% fail on Pre 01/07/2008 Turbo
        • 0.026% fail on On or after 01/01/2014
    • 0.34% fail on Fluid leaks
      • 0.31% fail on Engine oil leaks
      • 0.026% fail on Other leaks
    • 0.026% fail on Noise suppression
      • 0.026% fail on Sound deadening material
  • 1.8% fail on Suspension (75% better than other pre-1990 cars)
    • 1.00% fail on Anti-roll bars (73% worse than other pre-1990 cars)
      • 0.37% fail on Attachment bracket and mounting (2 times worse than other pre-1990 cars)
      • 0.24% fail on Linkage ball joint dust cover (2 times worse than other pre-1990 cars)
      • 0.18% fail on Linkage pins and bushes
      • 0.079% fail on Pins and bushes
      • 0.052% fail on Anti-roll bar
      • 0.052% fail on Ball joint dust cover
      • 0.026% fail on Linkage
      • 0.026% fail on Linkage ball joints
    • 0.29% fail on Wheel bearings (79% better than other pre-1990 cars)
    • 0.21% fail on Shock absorbers
    • 0.21% fail on Suspension arms (88% better than other pre-1990 cars)
      • 0.079% fail on Ball joint (86% better than other pre-1990 cars)
      • 0.079% fail on Ball joint dust cover (86% better than other pre-1990 cars)
      • 0.052% fail on Attachment bracket and mounting
    • 0.18% fail on Component mounting prescribed areas (93% better than other pre-1990 cars)
    • 0.026% fail on Springs
      • 0.026% fail on Torsion bars
        • 0.026% fail on Attachment bracket
    • 0.026% fail on Suspension rods
      • 0.026% fail on Suspension rod
    • 0.026% fail on Other suspension component
      • 0.026% fail on Other suspension component
  • 1.0% fail on Tyres
    • 0.55% fail on Condition
    • 0.52% fail on Tread depth
  • 0.84% fail on Steering (77% better than other pre-1990 cars)
    • 0.26% fail on Steering gear (77% better than other pre-1990 cars)
      • 0.26% fail on Steering rack (72% better than other pre-1990 cars)
    • 0.26% fail on Steering linkage components (86% better than other pre-1990 cars)
      • 0.18% fail on Track rod end (84% better than other pre-1990 cars)
      • 0.052% fail on Locking devices
      • 0.026% fail on Lock stop
    • 0.24% fail on Steering column
    • 0.10% fail on Steering wheel
    • 0.026% fail on Steering play
      • 0.026% fail on Steering rack
  • 0.73% fail on Identification of the vehicle
    • 0.73% fail on Registration plates
  • 0.58% fail on Seat belts and supplementary restraint systems (64% better than other pre-1990 cars)
    • 0.58% fail on Seat belts (64% better than other pre-1990 cars)
      • 0.34% fail on Prescribed areas (65% better than other pre-1990 cars)
      • 0.21% fail on Condition
      • 0.026% fail on Requirements
  • 0.079% fail on Road Wheels
    • 0.079% fail on Attachment
  • 0.026% fail on Speedometer and speed limiter
    • 0.026% fail on Speedometer
  • 0.026% fail on Seat belt installation check
    • 0.026% fail on Anchorages
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