Mercedes-Benz S-Class MOT Results

Registered in 1987
75.4% pass rate
from 313 tests in 2021
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.

  • 12% fail on Lamps, reflectors and electrical equipment
    • 4.8% fail on Headlamp aim
      • 4.8% fail on Headlamp aim
    • 2.9% fail on Direction indicators
      • 2.9% fail on Flashing type
        • 1.9% fail on Individual direction indicators
        • 0.64% fail on All direction indicators
        • 0.32% fail on Side repeaters
    • 1.9% fail on Stop lamp
    • 1.6% fail on Headlamps
      • 1.6% fail on Headlamp
    • 1.6% fail on Front and rear fog lamps
      • 1.6% fail on Rear fog lamp
        • 1.6% fail on Rear fog lamp
    • 1.3% fail on Hazard warning
      • 1.3% fail on Switch
    • 0.64% fail on Mandatory tell-tales
      • 0.64% fail on Rear fog lamp tell-tale
    • 0.32% fail on Registration plate lamp(s)
    • 0.32% fail on Electrical equipment
      • 0.32% fail on Battery(ies)
  • 8.0% fail on Brakes
    • 4.2% fail on Brake performance
      • 1.6% fail on Service brake performance
        • 1.6% fail on Rbt
          • 1.3% fail on Service brake performance
          • 1.3% fail on Service brake imbalance
      • 1.6% fail on Parking brake efficiency (sp)
        • 1.6% fail on Rbt (sp)
      • 1.3% fail on Service Brake Efficiency (sp)
        • 1.3% fail on Rbt (sp)
          • 0.96% fail on Service brake imbalance
          • 0.32% fail on Service brake performance
      • 0.64% fail on Parking brake performance
        • 0.64% fail on Rbt
          • 0.64% fail on Parking brake performance
      • 0.32% fail on Brake performance not tested
    • 1.6% fail on Rigid brake pipes
    • 1.3% fail on ABS / EBS / ESC (7 times worse than other 1987 cars)
      • 1.3% fail on Anti-lock braking system (7 times worse than other 1987 cars)
    • 0.64% fail on Parking brake control
      • 0.64% fail on Lever
    • 0.64% fail on Hydraulic systems
      • 0.64% fail on Brake fluid
    • 0.32% fail on Service brake pedal or hand lever
      • 0.32% fail on Pedal
    • 0.32% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.32% fail on Hydraulic brake callipers
    • 0.32% fail on Load sensing valves
    • 0.32% fail on Other components and prescribed areas
      • 0.32% fail on Prescribed areas
        • 0.32% fail on Other braking system component
    • 0.32% fail on Mechanical brake components
      • 0.32% fail on Brake linings and pads
        • 0.32% fail on Brake pads
  • 8.0% fail on Suspension
    • 3.8% fail on Suspension arms
      • 2.6% fail on Ball joint dust cover (2 times worse than other 1987 cars)
      • 0.96% fail on Suspension arm (4 times worse than other 1987 cars)
      • 0.64% fail on Ball joint
    • 2.2% fail on Component mounting prescribed areas
    • 0.96% fail on Sub-frames
      • 0.64% fail on Pins and bushes (5 times worse than other 1987 cars)
      • 0.32% fail on Sub-frame mounting prescribed areas
    • 0.64% fail on Other suspension component
      • 0.64% fail on Ball joint dust cover (6 times worse than other 1987 cars)
    • 0.32% fail on Wheel bearings
    • 0.32% fail on Springs
      • 0.32% fail on Coil springs
        • 0.32% fail on Mounting
    • 0.32% fail on Anti-roll bars
      • 0.32% fail on Linkage attachment bracket and mounting
  • 4.8% fail on Visibility
    • 2.6% fail on Wipers
    • 2.2% fail on Washers
    • 0.64% fail on Bonnet
  • 4.8% fail on Body, chassis, structure
    • 2.2% fail on Exhaust system
    • 0.96% fail on Chassis
      • 0.96% fail on Chassis condition
    • 0.64% fail on Cabs
      • 0.64% fail on Prescribed areas
    • 0.32% fail on Integral vehicle structure
      • 0.32% fail on Integral vehicle structure condition
    • 0.32% fail on Fuel system
      • 0.32% fail on Hose
    • 0.32% fail on Floor
    • 0.32% fail on Seats
      • 0.32% fail on Driver's seat
      • 0.32% fail on Passenger's seat
  • 4.8% fail on Noise, emissions and leaks
    • 4.2% fail on Exhaust emissions
      • 3.5% fail on Spark ignition
        • 3.2% fail on Non catalyst emissions
        • 0.32% fail on Catalyst emissions
      • 0.64% fail on Compression ignition
        • 0.64% fail on Pre 01/07/2008 Turbo
    • 0.64% fail on Fluid leaks
      • 0.32% fail on Engine oil leaks
      • 0.32% fail on Transmission oil leaks
  • 1.9% fail on Steering
    • 1.3% fail on Steering linkage components
      • 0.64% fail on Ball joint
      • 0.64% fail on Track rod end
    • 0.32% fail on Power steering
      • 0.32% fail on Other components
    • 0.32% fail on Steering wheel
  • 1.6% fail on Seat belts and supplementary restraint systems
    • 1.6% fail on Seat belts
      • 0.64% fail on Prescribed areas
      • 0.64% fail on Condition
      • 0.32% fail on Attachment
  • 1.6% fail on Tyres
    • 1.3% fail on Condition
    • 0.32% fail on Tread depth

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