MOT Results

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Porsche 928 MOT Results

75.6% pass rate
from 615 tests in 2021
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 928 is unusually good or bad.

  • 12% fail on Lamps, reflectors and electrical equipment
    • 5.4% fail on Front and rear fog lamps (130% worse than other pre-1990 cars)
      • 5.4% fail on Rear fog lamp (130% worse than other pre-1990 cars)
        • 5.4% fail on Rear fog lamp (130% worse than other pre-1990 cars)
        • 0.16% fail on Switch
    • 4.2% fail on Headlamp aim
      • 4.1% fail on Headlamp aim
      • 0.16% fail on Headlamp aim not tested
    • 2.1% fail on Headlamps
      • 1.5% fail on Headlamp
      • 0.65% fail on Headlamp levelling device (13 times worse than other pre-1990 cars)
      • 0.16% fail on Dipswitch
    • 2.0% fail on Electrical equipment
      • 1.8% fail on Horn
      • 0.16% fail on Electrical wiring
    • 1.6% fail on Direction indicators
      • 1.6% fail on Flashing type
        • 1.3% fail on Individual direction indicators
        • 0.65% fail on Side repeaters
        • 0.16% fail on Switch
    • 1.3% fail on Mandatory tell-tales (2 times worse than other pre-1990 cars)
      • 1.1% fail on Rear fog lamp tell-tale (3 times worse than other pre-1990 cars)
      • 0.16% fail on Main beam tell-tale
    • 1.1% fail on Stop lamp
    • 1.1% fail on Registration plate lamp(s)
    • 0.33% fail on Hazard warning
      • 0.33% fail on Switch
  • 6.8% fail on Visibility
    • 5.4% fail on Washers
    • 2.4% fail on Wipers
    • 0.16% fail on View to rear
      • 0.16% fail on Mirrors
  • 5.2% fail on Brakes (41% better than other pre-1990 cars)
    • 3.9% fail on Brake performance (42% better than other pre-1990 cars)
      • 1.5% fail on Service brake performance
        • 1.3% fail on Rbt
          • 1.3% fail on Service brake performance
        • 0.16% fail on Decelerometer
          • 0.16% fail on Service brake performance
      • 1.5% fail on Parking brake efficiency (sp)
        • 1.5% fail on Rbt (sp)
      • 1.1% fail on Service Brake Efficiency (sp) (62% better than other pre-1990 cars)
        • 1.1% fail on Rbt (sp) (60% better than other pre-1990 cars)
          • 1.1% fail on Service brake performance
          • 0.16% fail on Service brake imbalance
      • 0.33% fail on Brake performance not tested
      • 0.33% fail on Parking brake performance
        • 0.33% fail on Rbt
          • 0.33% fail on Parking brake performance
    • 0.81% fail on ABS / EBS / ESC (4 times worse than other pre-1990 cars)
      • 0.81% fail on Anti-lock braking system (5 times worse than other pre-1990 cars)
    • 0.49% fail on Rigid brake pipes
    • 0.33% fail on Parking brake control
      • 0.33% fail on Lever
    • 0.16% fail on Service brake pedal or hand lever
      • 0.16% fail on Hand lever
    • 0.16% fail on Mechanical brake components
      • 0.16% fail on Brake discs and drums
        • 0.16% fail on Brake discs
  • 5.0% fail on Steering
    • 3.1% fail on Steering gear (170% worse than other pre-1990 cars)
      • 2.8% fail on Steering rack (190% worse than other pre-1990 cars)
      • 0.33% fail on Operation (5 times worse than other pre-1990 cars)
    • 1.3% fail on Steering linkage components
      • 1.1% fail on Track rod end
      • 0.16% fail on Drag link end
    • 0.81% fail on Power steering
      • 0.65% fail on Other components (3 times worse than other pre-1990 cars)
      • 0.16% fail on Operation
    • 0.33% fail on Steering play
      • 0.33% fail on Steering rack
  • 4.7% fail on Noise, emissions and leaks
    • 4.2% fail on Exhaust emissions
      • 4.1% fail on Spark ignition
        • 2.9% fail on Non catalyst emissions
        • 0.81% fail on Catalyst emissions
        • 0.65% fail on Emissions not tested
      • 0.16% fail on Compression ignition
        • 0.16% fail on On or after 01/07/2008
    • 0.49% fail on Fluid leaks
      • 0.33% fail on Engine oil leaks
      • 0.16% fail on Transmission oil leaks
  • 4.1% fail on Suspension (45% better than other pre-1990 cars)
    • 1.5% fail on Wheel bearings
    • 1.3% fail on Component mounting prescribed areas
    • 0.65% fail on Springs
      • 0.65% fail on Coil springs
        • 0.65% fail on Coil spring
    • 0.33% fail on Suspension arms (82% better than other pre-1990 cars)
      • 0.16% fail on Pins and bushes
      • 0.16% fail on Ball joint dust cover
    • 0.33% fail on Anti-roll bars
      • 0.33% fail on Linkage pins and bushes
    • 0.16% fail on Shock absorbers
    • 0.16% fail on Macpherson strut
      • 0.16% fail on Macpherson strut
    • 0.16% fail on Other suspension component
      • 0.16% fail on Ball joint dust cover
  • 3.7% fail on Body, chassis, structure (41% better than other pre-1990 cars)
    • 2.0% fail on Transmission
      • 2.0% fail on Drive shafts
        • 2.0% fail on Joints
    • 0.49% fail on Fuel system
      • 0.33% fail on Fuel cap/sealing device
      • 0.16% fail on Hose
    • 0.49% fail on Doors
      • 0.49% fail on Front passenger's door
        • 0.49% fail on Door condition
    • 0.49% fail on Seats
      • 0.33% fail on Passenger's seat
      • 0.16% fail on Driver's seat
    • 0.33% fail on Integral vehicle structure
      • 0.33% fail on Integral vehicle structure condition
    • 0.33% fail on Boot lid (8 times worse than other pre-1990 cars)
      • 0.16% fail on Boot lid condition
      • 0.16% fail on Other boot lid component
    • 0.16% fail on Chassis
      • 0.16% fail on Chassis condition
    • 0.16% fail on Exhaust system
  • 1.6% fail on Seat belts and supplementary restraint systems
    • 1.5% fail on Seat belts
      • 0.81% fail on Condition
      • 0.65% fail on Prescribed areas
    • 0.16% fail on SRS malfunction indicator lamp
  • 0.81% fail on Identification of the vehicle
    • 0.81% fail on Registration plates
  • 0.65% fail on Tyres
    • 0.33% fail on Condition
    • 0.33% fail on Tread depth
  • 0.16% fail on Road Wheels
    • 0.16% fail on Attachment