Mercedes-Benz S-Class MOT Results

Registered in 1992
73.4% pass rate
from 608 tests in 2020
(28% better than other 1992 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 1992 cars and highlighted areas where the Mercedes-Benz S-Class is unusually good or bad.

  • 12% fail on Lamps, reflectors and electrical equipment (24% better than other 1992 cars)
    • 3.6% fail on Stop lamp
    • 2.8% fail on Direction indicators
      • 2.8% fail on Flashing type
        • 1.3% fail on Individual direction indicators
        • 1.3% fail on Side repeaters
        • 0.33% fail on All direction indicators
    • 2.6% fail on Front and rear fog lamps
      • 2.6% fail on Rear fog lamp
        • 2.3% fail on Rear fog lamp
        • 0.49% fail on Switch
    • 2.5% fail on Headlamp aim
      • 2.3% fail on Headlamp aim
      • 0.16% fail on Headlamp aim not tested
    • 2.3% fail on Headlamps
      • 2.3% fail on Headlamp
    • 1.5% fail on Position lamps
      • 1.5% fail on Position lamp
    • 0.82% fail on Electrical equipment (66% better than other 1992 cars)
      • 0.49% fail on Battery(ies)
      • 0.33% fail on Horn
    • 0.49% fail on Registration plate lamp(s)
    • 0.49% fail on Mandatory tell-tales
      • 0.33% fail on Rear fog lamp tell-tale
      • 0.16% fail on Main beam tell-tale
  • 7.7% fail on Suspension (31% better than other 1992 cars)
    • 3.1% fail on Component mounting prescribed areas
    • 2.0% fail on Springs
      • 2.0% fail on Coil springs (140% worse than other 1992 cars)
        • 1.8% fail on Coil spring (140% worse than other 1992 cars)
        • 0.16% fail on Mounting
    • 1.6% fail on Suspension arms
      • 0.66% fail on Ball joint dust cover
      • 0.49% fail on Ball joint
      • 0.16% fail on Suspension arm
      • 0.16% fail on Attachment bracket and mounting
      • 0.16% fail on Pins and bushes
    • 1.2% fail on Shock absorbers
    • 0.99% fail on Anti-roll bars
      • 0.33% fail on Pins and bushes
      • 0.16% fail on Attachment bracket and mounting
      • 0.16% fail on Linkage pins and bushes
      • 0.16% fail on Linkage ball joints
      • 0.16% fail on Ball joint dust cover
    • 0.49% fail on Sub-frames
      • 0.33% fail on Sub-frame mounting prescribed areas
      • 0.16% fail on Pins and bushes
    • 0.49% fail on Air/gas/fluid suspension
      • 0.16% fail on Operation
      • 0.16% fail on Levelling valve
      • 0.16% fail on Pipes
    • 0.33% fail on Wheel bearings
    • 0.16% fail on Macpherson strut
      • 0.16% fail on Pins and bushes
    • 0.16% fail on Other suspension component
      • 0.16% fail on Ball joint
  • 7.6% fail on Body, chassis, structure
    • 3.3% fail on Exhaust system
    • 1.5% fail on Transmission
      • 0.82% fail on Drive shafts
        • 0.82% fail on Joints
      • 0.66% fail on Prop shafts
        • 0.49% fail on Prop shaft (4 times worse than other 1992 cars)
        • 0.16% fail on Bearing housing
    • 1.3% fail on Chassis
      • 1.3% fail on Chassis condition
    • 0.99% fail on Fuel system
      • 0.66% fail on Pipe
      • 0.33% fail on Hose
      • 0.16% fail on Tank
    • 0.66% fail on Body
      • 0.49% fail on Panel
      • 0.16% fail on Other body component
    • 0.49% fail on Integral vehicle structure
      • 0.49% fail on Integral vehicle structure condition
    • 0.16% fail on Bumpers
    • 0.16% fail on Seats
      • 0.16% fail on Driver's seat
      • 0.16% fail on Passenger's seat
    • 0.16% fail on Boot lid
      • 0.16% fail on Boot lid condition
    • 0.16% fail on Cabs
      • 0.16% fail on Prescribed areas
  • 4.8% fail on Brakes (60% better than other 1992 cars)
    • 2.6% fail on Brake performance (67% better than other 1992 cars)
      • 1.5% fail on Service brake performance
        • 1.5% fail on Rbt
          • 1.2% fail on Service brake performance
          • 0.33% fail on Service brake imbalance
      • 0.99% fail on Service Brake Efficiency (sp) (69% better than other 1992 cars)
        • 0.99% fail on Rbt (sp) (67% better than other 1992 cars)
          • 0.82% fail on Service brake imbalance
          • 0.49% fail on Service brake performance
      • 0.99% fail on Parking brake efficiency (sp) (72% better than other 1992 cars)
        • 0.99% fail on Rbt (sp) (70% better than other 1992 cars)
      • 0.16% fail on Brake performance not tested
    • 1.3% fail on Rigid brake pipes
    • 0.66% fail on ABS / EBS / ESC
      • 0.66% fail on Anti-lock braking system
    • 0.49% fail on Service brake pedal or hand lever
      • 0.33% fail on Hand lever
      • 0.16% fail on Pedal
    • 0.33% fail on Load sensing valves
    • 0.33% fail on Other components and prescribed areas
      • 0.16% fail on Other components
      • 0.16% fail on Prescribed areas
        • 0.16% fail on Other braking system component
    • 0.33% fail on Mechanical brake components (79% better than other 1992 cars)
      • 0.16% fail on Brake linings and pads
        • 0.16% fail on Brake pads
      • 0.16% fail on Brake cables, rods, levers and linkages
        • 0.16% fail on Lever
    • 0.16% fail on Air and vacuum systems
      • 0.16% fail on Leaks
    • 0.16% fail on Parking brake control
      • 0.16% fail on Lever
    • 0.16% fail on Hydraulic systems
      • 0.16% fail on Servos
    • 0.16% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.16% fail on Hydraulic brake callipers
  • 4.6% fail on Visibility
    • 3.1% fail on Wipers
    • 1.5% fail on Washers (60% better than other 1992 cars)
    • 0.16% fail on Driver's view
    • 0.16% fail on Bonnet
    • 0.16% fail on View to rear
      • 0.16% fail on Mirrors
  • 3.3% fail on Noise, emissions and leaks (50% better than other 1992 cars)
    • 3.1% fail on Exhaust emissions (48% better than other 1992 cars)
      • 2.8% fail on Spark ignition (49% better than other 1992 cars)
        • 2.0% fail on Catalyst emissions
        • 0.49% fail on Emissions not tested
        • 0.33% fail on Non catalyst emissions
      • 0.33% fail on Compression ignition
        • 0.16% fail on Pre 01/07/2008 Non turbo
        • 0.16% fail on Emissions not tested
    • 0.16% fail on Fluid leaks
      • 0.16% fail on Engine oil leaks
      • 0.16% fail on Other leaks
  • 3.1% fail on Steering
    • 2.6% fail on Steering linkage components
      • 1.8% fail on Track rod end
      • 0.49% fail on Ball joint
      • 0.33% fail on Drag link end
    • 0.49% fail on Power steering
      • 0.33% fail on Other components
      • 0.16% fail on Pump
    • 0.16% fail on Prescribed areas
  • 2.8% fail on Seat belts and supplementary restraint systems
    • 2.8% fail on Seat belts
      • 2.1% fail on Prescribed areas
      • 0.82% fail on Condition
  • 2.5% fail on Tyres
    • 1.3% fail on Tread depth
    • 0.99% fail on Condition
    • 0.16% fail on Size/type
  • 0.49% fail on Identification of the vehicle
    • 0.49% fail on Registration plates
  • 0.16% fail on Speedometer and speed limiter
    • 0.16% fail on Speedometer
  • 0.16% fail on Road Wheels
    • 0.16% fail on Condition

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