Mercedes-Benz S-Class MOT Results

Registered in 1991
68.6% pass rate
from 560 tests in 2017
(19% better than other 1991 cars)
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 1991 cars and highlighted areas where the Mercedes-Benz S-Class is unusually good or bad.

  • 15% fail on Lamps, Reflectors and Electrical Equipment (27% better than other 1991 cars)
    • 4.5% fail on Headlamp aim
    • 3.6% fail on Position lamps
      • 2.1% fail on Front lamps
      • 1.8% fail on Rear lamps
    • 2.9% fail on Rear fog lamp
      • 2.3% fail on Fog lamp (49% better than other 1991 cars)
      • 0.54% fail on Tell tale
      • 0.36% fail on Switch
    • 2.7% fail on Direction indicators
      • 2.7% fail on Flashing type
        • 1.3% fail on Side repeaters
        • 1.1% fail on Individual lamps
        • 0.54% fail on All direction indicators
        • 0.18% fail on Tell tales
    • 1.8% fail on Stop lamp
    • 1.6% fail on Registration plate lamp (55% better than other 1991 cars)
    • 1.6% fail on Headlamps
      • 1.6% fail on Headlamp
    • 1.3% fail on Battery
    • 0.71% fail on Hazard warning
      • 0.54% fail on Lamp
      • 0.36% fail on Switch
    • 0.18% fail on Horn
  • 11% fail on Brakes (27% better than other 1991 cars)
    • 5.9% fail on Brake performance (37% better than other 1991 cars)
      • 3.0% fail on Rear wheels
      • 2.1% fail on Front wheels
      • 1.8% fail on Parking brake performance (56% better than other 1991 cars)
      • 1.6% fail on Service brake performance
      • 0.18% fail on Brake imbalance
      • 0.18% fail on Brake operation
      • 0.18% fail on Brake performance not tested
    • 4.5% fail on Hydraulic systems
      • 4.3% fail on Components
        • 2.9% fail on Pipes
        • 1.3% fail on Hoses
        • 0.18% fail on Valves
      • 0.71% fail on Leaks
    • 1.3% fail on ABS (3 times worse than other 1991 cars)
    • 1.3% fail on Hub components
      • 0.71% fail on Brake pads
      • 0.36% fail on Wheel cylinder (8 times worse than other 1991 cars)
      • 0.18% fail on Brake calipers
    • 0.71% fail on Parking brake
      • 0.71% fail on Condition
    • 0.18% fail on Service brake control components
      • 0.18% fail on Pedal
        • 0.18% fail on Condition
    • 0.18% fail on Air and vacuum systems
      • 0.18% fail on Pressure/vacuum build up
  • 8.9% fail on Suspension (42% better than other 1991 cars)
    • 2.3% fail on Prescribed areas (64% better than other 1991 cars)
      • 1.6% fail on Component mounting (68% better than other 1991 cars)
      • 0.54% fail on Spring mounting
      • 0.36% fail on Subframe mounting
    • 2.1% fail on Coil springs
      • 2.1% fail on Condition (120% worse than other 1991 cars)
    • 1.6% fail on Front suspension joints
    • 1.3% fail on Suspension arms
      • 1.3% fail on Pins/bushes/ball joints
    • 1.1% fail on Anti-roll bars
      • 0.36% fail on Linkage pins/bushes/ball joints
      • 0.36% fail on Attachment
      • 0.18% fail on Pins/bushes/ball joints
      • 0.18% fail on Presence
    • 1.1% fail on Wheel bearings
      • 0.71% fail on Front
      • 0.36% fail on Rear
    • 0.54% fail on Shock absorbers
      • 0.54% fail on Condition
    • 0.18% fail on Fluid suspension
      • 0.18% fail on Pipes
    • 0.18% fail on Sub-frames
      • 0.18% fail on Attachment
    • 0.18% fail on Axles
      • 0.18% fail on Swivel joints/housing
    • 0.18% fail on Drive shafts
      • 0.18% fail on Front drive shafts
        • 0.18% fail on Constant velocity joints
  • 6.3% fail on Driver's view of the road
    • 3.6% fail on Wipers
    • 2.7% fail on Washers
    • 0.18% fail on Bonnet
    • 0.18% fail on Windscreen
    • 0.18% fail on Mirrors
  • 5.5% fail on Exhaust, Fuel and Emissions
    • 3.0% fail on Emissions
    • 1.6% fail on Exhaust system (62% better than other 1991 cars)
    • 1.1% fail on Fuel system
      • 0.54% fail on System
      • 0.36% fail on Tank
      • 0.18% fail on Pipe
    • 0.18% fail on Emissions not tested
  • 4.1% fail on Steering
    • 3.9% fail on Steering system
      • 3.0% fail on Track rod end
      • 1.1% fail on Drag link end (2 times worse than other 1991 cars)
      • 0.36% fail on Ball joint
      • 0.18% fail on Free play
        • 0.18% fail on Steering box
      • 0.18% fail on Steering box
      • 0.18% fail on Steering damper
    • 0.18% fail on Steering operation
  • 3.4% fail on Tyres
    • 2.1% fail on Tread depth
    • 1.8% fail on Condition
  • 2.0% fail on Body, Structure and General Items (59% better than other 1991 cars)
    • 1.1% fail on Seats
      • 1.1% fail on Drivers
      • 0.54% fail on Passengers
    • 0.36% fail on Vehicle structure
      • 0.36% fail on Chassis
    • 0.36% fail on Body condition (84% better than other 1991 cars)
    • 0.18% fail on Doors
      • 0.18% fail on Drivers
  • 0.89% fail on Seat Belts and Supplementary Restraint Systems (79% better than other 1991 cars)
    • 0.71% fail on Seat belts (83% better than other 1991 cars)
      • 0.54% fail on Prescribed areas (85% better than other 1991 cars)
      • 0.18% fail on Condition
    • 0.18% fail on Supplementary restraint systems
      • 0.18% fail on SRS Malfunction Indicator Lamp
  • 0.54% fail on Road Wheels
    • 0.54% fail on Attachment
  • 0.54% fail on Registration plates and VIN
    • 0.54% fail on Registration plate

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