Mercedes-Benz S-Class MOT Results

Registered in 1987
74.6% pass rate
from 366 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 1987 cars and highlighted areas where the Mercedes-Benz S-Class is unusually good or bad.

  • 11% fail on Lamps, reflectors and electrical equipment
    • 4.4% fail on Headlamp aim
      • 4.4% fail on Headlamp aim
    • 2.5% fail on Front and rear fog lamps
      • 2.5% fail on Rear fog lamp
        • 2.5% fail on Rear fog lamp
        • 0.27% fail on Switch
    • 2.2% fail on Headlamps
      • 1.6% fail on Headlamp
      • 0.55% fail on Headlamp levelling device (21 times worse than other 1987 cars)
    • 1.9% fail on Direction indicators
      • 1.9% fail on Flashing type
        • 0.55% fail on All direction indicators
        • 0.55% fail on Individual direction indicators
        • 0.55% fail on Side repeaters
        • 0.27% fail on Switch
    • 1.6% fail on Mandatory tell-tales
      • 1.4% fail on Rear fog lamp tell-tale (2 times worse than other 1987 cars)
      • 0.27% fail on Main beam tell-tale
    • 1.1% fail on Position lamps
      • 1.1% fail on Position lamp
    • 1.1% fail on Stop lamp
    • 0.82% fail on Registration plate lamp(s)
    • 0.82% fail on Electrical equipment
      • 0.55% fail on Battery(ies)
      • 0.27% fail on Horn
    • 0.27% fail on Hazard warning
      • 0.27% fail on Switch
  • 7.7% fail on Suspension
    • 4.1% fail on Suspension arms
      • 1.6% fail on Suspension arm (6 times worse than other 1987 cars)
      • 1.4% fail on Ball joint dust cover
      • 1.1% fail on Ball joint
      • 0.55% fail on Pins and bushes
      • 0.27% fail on Attachment bracket and mounting
    • 2.2% fail on Component mounting prescribed areas
    • 1.6% fail on Wheel bearings
    • 1.4% fail on Sub-frames
      • 0.82% fail on Sub-frame mounting prescribed areas
      • 0.55% fail on Pins and bushes
    • 0.55% fail on Springs
      • 0.55% fail on Spring mounting prescribed areas
    • 0.55% fail on Anti-roll bars
      • 0.27% fail on Attachment bracket and mounting
      • 0.27% fail on Linkage
    • 0.27% fail on Axles
      • 0.27% fail on Swivel pins and bushes
    • 0.27% fail on Other suspension component
      • 0.27% fail on Ball joint dust cover
  • 7.1% fail on Brakes
    • 4.6% fail on Brake performance
      • 3.0% fail on Service brake performance
        • 3.0% fail on Rbt
          • 2.7% fail on Service brake performance
          • 0.82% fail on Service brake imbalance
      • 1.4% fail on Parking brake efficiency (sp)
        • 1.4% fail on Rbt (sp)
      • 1.1% fail on Service Brake Efficiency (sp)
        • 1.1% fail on Rbt (sp)
          • 0.82% fail on Service brake performance
          • 0.27% fail on Service brake imbalance
      • 0.55% fail on Parking brake performance
        • 0.55% fail on Rbt
          • 0.55% fail on Parking brake performance
    • 1.4% fail on Mechanical brake components
      • 0.82% fail on Brake linings and pads
        • 0.82% fail on Brake pads
      • 0.55% fail on Brake discs and drums
        • 0.55% fail on Brake discs
    • 1.1% fail on ABS / EBS / ESC (3 times worse than other 1987 cars)
      • 1.1% fail on Anti-lock braking system (3 times worse than other 1987 cars)
    • 0.55% fail on Hydraulic systems
      • 0.55% fail on Brake fluid
    • 0.55% fail on Rigid brake pipes
    • 0.55% fail on Flexible brake hoses
    • 0.27% fail on Service brake pedal or hand lever
      • 0.27% fail on Hand lever
    • 0.27% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.27% fail on Hydraulic brake callipers
    • 0.27% fail on Other components and prescribed areas
      • 0.27% fail on Prescribed areas
        • 0.27% fail on Master cylinder/servo mounting
  • 6.6% fail on Visibility
    • 4.4% fail on Washers
    • 2.5% fail on Wipers
    • 0.27% fail on Condition of glass
      • 0.27% fail on Windscreen
  • 4.6% fail on Body, chassis, structure (46% better than other 1987 cars)
    • 1.6% fail on Exhaust system
    • 1.4% fail on Fuel system
      • 0.82% fail on Pipe
      • 0.55% fail on System
    • 0.82% fail on Integral vehicle structure
      • 0.82% fail on Integral vehicle structure condition
    • 0.82% fail on Chassis
      • 0.82% fail on Chassis condition
    • 0.27% fail on Transmission
      • 0.27% fail on Prop shafts
        • 0.27% fail on Flexible couplings
  • 4.1% fail on Noise, emissions and leaks
    • 3.3% fail on Exhaust emissions
      • 3.3% fail on Spark ignition
        • 2.7% fail on Non catalyst emissions
        • 0.55% fail on Catalyst emissions
    • 0.55% fail on Fluid leaks
      • 0.27% fail on Engine oil leaks
      • 0.27% fail on Transmission oil leaks
    • 0.27% fail on Noise suppression
      • 0.27% fail on Sound deadening material
  • 2.2% fail on Steering
    • 1.6% fail on Steering linkage components
      • 1.1% fail on Track rod end
      • 0.27% fail on Ball joint
      • 0.27% fail on Drag link end
    • 0.27% fail on Steering gear
      • 0.27% fail on Steering box
    • 0.27% fail on Power steering
      • 0.27% fail on Other components
  • 2.2% fail on Tyres
    • 1.9% fail on Condition
    • 0.27% fail on Tread depth
  • 0.82% fail on Seat belts and supplementary restraint systems
    • 0.82% fail on Seat belts
      • 0.82% fail on Prescribed areas
  • 0.27% fail on Identification of the vehicle
    • 0.27% fail on Registration plates

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