Porsche 928 MOT Results

Registered in 1989
73.8% pass rate
from 126 tests in 2020
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 1989 cars and highlighted areas where the Porsche 928 is unusually good or bad.

  • 19% fail on Lamps, reflectors and electrical equipment
    • 9.5% fail on Front and rear fog lamps (170% worse than other 1989 cars)
      • 9.5% fail on Rear fog lamp (170% worse than other 1989 cars)
        • 8.7% fail on Rear fog lamp (160% worse than other 1989 cars)
        • 0.79% fail on Switch
    • 4.8% fail on Headlamp aim
      • 3.2% fail on Headlamp aim
      • 1.6% fail on Headlamp aim not tested
    • 4.8% fail on Position lamps
      • 4.8% fail on Position lamp
    • 3.2% fail on Headlamps
      • 3.2% fail on Headlamp
    • 2.4% fail on Stop lamp
    • 1.6% fail on Electrical equipment
      • 1.6% fail on Horn
    • 0.79% fail on Direction indicators
      • 0.79% fail on Flashing type
        • 0.79% fail on Individual direction indicators
    • 0.79% fail on Registration plate lamp(s)
  • 8.7% fail on Visibility
    • 6.3% fail on Washers
    • 2.4% fail on Wipers
  • 7.1% fail on Brakes
    • 4.8% fail on ABS / EBS / ESC (14 times worse than other 1989 cars)
      • 4.8% fail on Anti-lock braking system (15 times worse than other 1989 cars)
    • 2.4% fail on Brake performance
      • 1.6% fail on Parking brake efficiency (sp)
        • 1.6% fail on Decelerometer (sp) (8 times worse than other 1989 cars)
      • 0.79% fail on Service brake performance
        • 0.79% fail on Rbt
          • 0.79% fail on Service brake performance
    • 1.6% fail on Parking brake control
      • 1.6% fail on Lever
  • 4.8% fail on Suspension
    • 1.6% fail on Component mounting prescribed areas
    • 0.79% fail on Wheel bearings
    • 0.79% fail on Springs
      • 0.79% fail on Coil springs
        • 0.79% fail on Coil spring
    • 0.79% fail on Shock absorbers
    • 0.79% fail on Suspension arms
      • 0.79% fail on Pins and bushes
    • 0.79% fail on Sub-frames
      • 0.79% fail on Sub-frame
  • 4.0% fail on Body, chassis, structure
    • 2.4% fail on Transmission
      • 2.4% fail on Drive shafts
        • 2.4% fail on Joints
      • 0.79% fail on Prop shafts
        • 0.79% fail on Joints
    • 0.79% fail on Chassis
      • 0.79% fail on Chassis condition
    • 0.79% fail on Boot lid
      • 0.79% fail on Boot lid condition
  • 3.2% fail on Steering
    • 2.4% fail on Steering linkage components
      • 2.4% fail on Track rod end
    • 0.79% fail on Power steering
      • 0.79% fail on Pipes and hoses
  • 2.4% fail on Noise, emissions and leaks
    • 2.4% fail on Exhaust emissions
      • 2.4% fail on Spark ignition
        • 0.79% fail on Non catalyst emissions
        • 0.79% fail on Catalyst emissions
        • 0.79% fail on Emissions not tested
  • 2.4% fail on Tyres
    • 2.4% fail on Tread depth
    • 0.79% fail on Condition
  • 0.79% fail on Identification of the vehicle
    • 0.79% fail on Registration plates
  • 0.79% fail on Seat belts and supplementary restraint systems
    • 0.79% fail on Seat belts
      • 0.79% fail on Condition

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