Porsche 911 MOT Results

Registered in 1990
82.8% pass rate
from 633 tests in 2021
(47% better than other 1990 cars)
Pass rate by mileage
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 1990 cars and highlighted areas where the Porsche 911 is unusually good or bad.

  • 10% fail on Lamps, reflectors and electrical equipment (29% better than other 1990 cars)
    • 4.3% fail on Headlamp aim
      • 4.3% fail on Headlamp aim
    • 3.5% fail on Front and rear fog lamps
      • 3.5% fail on Rear fog lamp
        • 3.5% fail on Rear fog lamp
    • 1.6% fail on Direction indicators
      • 1.6% fail on Flashing type
        • 1.1% fail on Individual direction indicators
        • 0.32% fail on Side repeaters
        • 0.16% fail on All direction indicators
    • 1.4% fail on Stop lamp
    • 0.95% fail on Headlamps (72% better than other 1990 cars)
      • 0.63% fail on Headlamp (80% better than other 1990 cars)
      • 0.16% fail on Dipswitch
      • 0.16% fail on Headlamp levelling device
    • 0.79% fail on Electrical equipment
      • 0.79% fail on Horn
    • 0.47% fail on Registration plate lamp(s)
    • 0.32% fail on Hazard warning
      • 0.32% fail on Switch
    • 0.32% fail on Mandatory tell-tales
      • 0.16% fail on Main beam tell-tale
      • 0.16% fail on Rear fog lamp tell-tale
  • 3.3% fail on Visibility (51% better than other 1990 cars)
    • 2.5% fail on Washers
    • 0.63% fail on Wipers (79% better than other 1990 cars)
    • 0.16% fail on Bonnet
  • 2.7% fail on Brakes (73% better than other 1990 cars)
    • 1.1% fail on Brake performance (84% better than other 1990 cars)
      • 0.63% fail on Parking brake performance
        • 0.63% fail on Rbt
          • 0.63% fail on Parking brake performance
      • 0.47% fail on Parking brake efficiency (sp) (85% better than other 1990 cars)
        • 0.47% fail on Rbt (sp) (84% better than other 1990 cars)
      • 0.16% fail on Service brake performance
        • 0.16% fail on Rbt
          • 0.16% fail on Service brake imbalance
      • 0.16% fail on Brake performance not tested
      • 0.16% fail on Service Brake Efficiency (sp)
        • 0.16% fail on Rbt (sp)
          • 0.16% fail on Service brake performance
    • 0.63% fail on ABS / EBS / ESC
      • 0.63% fail on Anti-lock braking system
    • 0.47% fail on Flexible brake hoses
    • 0.32% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.16% fail on Hydraulic brake callipers
      • 0.16% fail on Hydraulic brake cylinder
    • 0.16% fail on Hydraulic systems
      • 0.16% fail on Brake fluid
    • 0.16% fail on Rigid brake pipes
  • 2.1% fail on Suspension (78% better than other 1990 cars)
    • 1.7% fail on Anti-roll bars
      • 1.4% fail on Linkage ball joint dust cover (9 times worse than other 1990 cars)
      • 0.32% fail on Ball joint dust cover (6 times worse than other 1990 cars)
    • 0.32% fail on Shock absorbers
    • 0.16% fail on Wheel bearings
    • 0.16% fail on Suspension arms
      • 0.16% fail on Ball joint dust cover
  • 1.9% fail on Noise, emissions and leaks (63% better than other 1990 cars)
    • 1.3% fail on Exhaust emissions (73% better than other 1990 cars)
      • 1.3% fail on Spark ignition (72% better than other 1990 cars)
        • 0.95% fail on Non catalyst emissions (72% better than other 1990 cars)
        • 0.32% fail on Catalyst emissions
    • 0.95% fail on Fluid leaks
      • 0.79% fail on Engine oil leaks
      • 0.16% fail on Other leaks
  • 1.9% fail on Tyres
    • 1.1% fail on Condition
    • 0.95% fail on Tread depth
  • 1.4% fail on Body, chassis, structure (83% better than other 1990 cars)
    • 0.95% fail on Transmission
      • 0.95% fail on Drive shafts
        • 0.95% fail on Joints
    • 0.16% fail on Exhaust system
    • 0.16% fail on Doors
      • 0.16% fail on Driver's door
        • 0.16% fail on Door condition
    • 0.16% fail on Boot lid
      • 0.16% fail on Boot lid condition
  • 0.95% fail on Steering (76% better than other 1990 cars)
    • 0.63% fail on Steering gear
      • 0.63% fail on Steering rack
    • 0.16% fail on Steering linkage components
      • 0.16% fail on Locking devices
    • 0.16% fail on Steering column
  • 0.63% fail on Identification of the vehicle
    • 0.63% fail on Registration plates
  • 0.16% fail on Seat belts and supplementary restraint systems
    • 0.16% fail on Seat belts
      • 0.16% fail on Prescribed areas

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