Porsche 928 MOT Results

Registered in 1986
65.8% pass rate
from 79 tests in 2017
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 1986 cars and highlighted areas where the Porsche 928 is unusually good or bad.

  • 24% fail on Lamps, Reflectors and Electrical Equipment
    • 13% fail on Headlamp aim (120% worse than other 1986 cars)
    • 10% fail on Rear fog lamp
      • 10% fail on Fog lamp
      • 2.5% fail on Tell tale
    • 3.8% fail on Position lamps
      • 2.5% fail on Rear lamps
      • 1.3% fail on Front lamps
    • 3.8% fail on Headlamps
      • 2.5% fail on Headlamp
      • 1.3% fail on Headlamp defects which do require an aim check on retest
        • 1.3% fail on Headlamp cleaning device
    • 3.8% fail on Stop lamp
    • 2.5% fail on Registration plate lamp
    • 2.5% fail on Horn
  • 11% fail on Brakes
    • 7.6% fail on Brake performance
      • 3.8% fail on Parking brake performance
      • 2.5% fail on Rear wheels
      • 1.3% fail on Brake imbalance
      • 1.3% fail on Front wheels
      • 1.3% fail on Service brake performance
      • 1.3% fail on Brake operation
    • 2.5% fail on Hydraulic systems
      • 2.5% fail on Components
        • 2.5% fail on Hoses
    • 2.5% fail on ABS (14 times worse than other 1986 cars)
    • 1.3% fail on Parking brake
      • 1.3% fail on Condition
    • 1.3% fail on Restricted movement
  • 11% fail on Driver's view of the road
    • 10% fail on Washers
    • 2.5% fail on Wipers
  • 6.3% fail on Tyres
    • 3.8% fail on Tread depth
    • 2.5% fail on Condition
  • 5.1% fail on Exhaust, Fuel and Emissions
    • 2.5% fail on Emissions
    • 2.5% fail on Fuel system
      • 2.5% fail on Pipe (5 times worse than other 1986 cars)
    • 1.3% fail on Exhaust system
  • 3.8% fail on Steering
    • 3.8% fail on Steering system
      • 1.3% fail on Free play
        • 1.3% fail on Steering rack
      • 1.3% fail on Steering rack
      • 1.3% fail on Track rod end
  • 3.8% fail on Suspension
    • 1.3% fail on Coil springs
      • 1.3% fail on Condition
    • 1.3% fail on Suspension arms
      • 1.3% fail on Pins/bushes/ball joints
    • 1.3% fail on Drive shafts
      • 1.3% fail on Any drive shaft which is part of the suspension
        • 1.3% fail on Drive shafts
  • 3.8% fail on Body, Structure and General Items
    • 1.3% fail on Speedometer
    • 1.3% fail on Doors
      • 1.3% fail on Drivers
    • 1.3% fail on Seats
      • 1.3% fail on Passengers

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