Mercedes-Benz S-Class MOT Results

Registered in 1989
77.5% pass rate
from 596 tests in 2021
(25% better than other 1989 cars)
Pass rate by mileage
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 1989 cars and highlighted areas where the Mercedes-Benz S-Class is unusually good or bad.

  • 7.9% fail on Brakes
    • 4.7% fail on Brake performance
      • 2.5% fail on Service brake performance
        • 2.5% fail on Rbt
          • 2.3% fail on Service brake performance
          • 0.17% fail on Service brake imbalance
      • 2.0% fail on Service Brake Efficiency (sp)
        • 2.0% fail on Rbt (sp)
          • 1.7% fail on Service brake performance
          • 0.84% fail on Service brake imbalance
      • 1.7% fail on Parking brake efficiency (sp)
        • 1.5% fail on Rbt (sp)
        • 0.17% fail on Decelerometer (sp)
      • 0.34% fail on Brake performance not tested
      • 0.34% fail on Parking brake performance
        • 0.34% fail on Rbt
          • 0.34% fail on Parking brake performance
    • 1.2% fail on Rigid brake pipes
    • 1.2% fail on Mechanical brake components
      • 1.0% fail on Brake linings and pads
        • 1.0% fail on Brake pads
      • 0.17% fail on Brake discs and drums
        • 0.17% fail on Brake discs
      • 0.17% fail on Brake cables, rods, levers and linkages
        • 0.17% fail on Brake slack adjuster
    • 1.0% fail on ABS / EBS / ESC (2 times worse than other 1989 cars)
      • 1.0% fail on Anti-lock braking system (2 times worse than other 1989 cars)
    • 0.50% fail on Hydraulic systems
      • 0.50% fail on Brake fluid (3 times worse than other 1989 cars)
    • 0.34% fail on Other components and prescribed areas
      • 0.34% fail on Prescribed areas
        • 0.34% fail on Other braking system component (7 times worse than other 1989 cars)
    • 0.17% fail on Service brake pedal or hand lever
      • 0.17% fail on Hand lever
    • 0.17% fail on Parking brake control
      • 0.17% fail on Lever
    • 0.17% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.17% fail on Hydraulic brake callipers
  • 7.4% fail on Lamps, reflectors and electrical equipment (47% better than other 1989 cars)
    • 2.7% fail on Direction indicators
      • 2.7% fail on Flashing type
        • 1.5% fail on Side repeaters
        • 1.2% fail on Individual direction indicators
        • 0.17% fail on All direction indicators
    • 2.2% fail on Headlamps
      • 2.0% fail on Headlamp
      • 0.17% fail on Headlamp levelling device
    • 2.0% fail on Headlamp aim
      • 2.0% fail on Headlamp aim
    • 1.2% fail on Front and rear fog lamps (61% better than other 1989 cars)
      • 1.2% fail on Rear fog lamp (61% better than other 1989 cars)
        • 1.2% fail on Rear fog lamp (61% better than other 1989 cars)
    • 1.2% fail on Electrical equipment
      • 0.67% fail on Horn
      • 0.50% fail on Battery(ies)
    • 0.84% fail on Registration plate lamp(s)
    • 0.50% fail on Mandatory tell-tales
      • 0.50% fail on Rear fog lamp tell-tale
    • 0.17% fail on Stop lamp
    • 0.17% fail on Hazard warning
      • 0.17% fail on Switch
  • 6.5% fail on Suspension
    • 3.2% fail on Suspension arms
      • 1.8% fail on Ball joint dust cover (180% worse than other 1989 cars)
      • 0.50% fail on Pins and bushes
      • 0.50% fail on Ball joint
      • 0.34% fail on Suspension arm
    • 2.3% fail on Component mounting prescribed areas
    • 1.5% fail on Anti-roll bars
      • 0.50% fail on Pins and bushes
      • 0.34% fail on Attachment bracket and mounting
      • 0.34% fail on Linkage pins and bushes
      • 0.34% fail on Linkage ball joints (5 times worse than other 1989 cars)
      • 0.17% fail on Linkage
      • 0.17% fail on Linkage attachment bracket and mounting
    • 1.0% fail on Wheel bearings
    • 0.50% fail on Springs
      • 0.50% fail on Coil springs
        • 0.50% fail on Coil spring
    • 0.34% fail on Sub-frames
      • 0.34% fail on Sub-frame mounting prescribed areas
    • 0.34% fail on Other suspension component
      • 0.34% fail on Ball joint dust cover
      • 0.17% fail on Ball joint
    • 0.17% fail on Suspension rods
      • 0.17% fail on Pins and bushes
  • 6.5% fail on Body, chassis, structure
    • 2.2% fail on Exhaust system
    • 1.3% fail on Seats
      • 1.2% fail on Driver's seat
      • 1.2% fail on Passenger's seat (2 times worse than other 1989 cars)
    • 1.0% fail on Integral vehicle structure
      • 1.0% fail on Integral vehicle structure condition
    • 0.84% fail on Transmission
      • 0.67% fail on Prop shafts
        • 0.34% fail on Joints
        • 0.17% fail on Prop shaft
        • 0.17% fail on Flexible couplings
      • 0.17% fail on Drive shafts
        • 0.17% fail on Joints
    • 0.67% fail on Chassis
      • 0.67% fail on Chassis condition
    • 0.50% fail on Fuel system
      • 0.17% fail on Hose
      • 0.17% fail on Pipe
      • 0.17% fail on Fuel cap/sealing device
    • 0.50% fail on Body
      • 0.50% fail on Panel
    • 0.17% fail on Bumpers
  • 5.2% fail on Visibility
    • 3.2% fail on Washers
    • 2.9% fail on Wipers
    • 0.17% fail on Bonnet
  • 2.7% fail on Noise, emissions and leaks (51% better than other 1989 cars)
    • 2.5% fail on Exhaust emissions (49% better than other 1989 cars)
      • 2.3% fail on Spark ignition (48% better than other 1989 cars)
        • 2.2% fail on Non catalyst emissions
        • 0.17% fail on Catalyst emissions
      • 0.17% fail on Compression ignition
        • 0.17% fail on On or after 01/07/2008
    • 0.17% fail on Noise suppression
      • 0.17% fail on Sound deadening material
    • 0.17% fail on Fluid leaks
      • 0.17% fail on Transmission oil leaks
  • 2.3% fail on Steering
    • 1.7% fail on Steering linkage components
      • 1.0% fail on Track rod end
      • 0.67% fail on Drag link end
      • 0.17% fail on Ball joint
    • 0.17% fail on Prescribed areas
    • 0.17% fail on Power steering
      • 0.17% fail on Other components
    • 0.17% fail on Steering coupling
      • 0.17% fail on Flexible coupling
    • 0.17% fail on Steering play
      • 0.17% fail on Steering box
  • 2.3% fail on Tyres
    • 1.8% fail on Condition
    • 0.50% fail on Tread depth
  • 1.3% fail on Seat belts and supplementary restraint systems
    • 1.3% fail on Seat belts
      • 1.2% fail on Prescribed areas
      • 0.17% fail on Condition
  • 0.67% fail on Identification of the vehicle
    • 0.67% fail on Registration plates
  • 0.67% fail on Speedometer and speed limiter (3 times worse than other 1989 cars)
    • 0.67% fail on Speedometer (3 times worse than other 1989 cars)
  • 0.17% fail on Road Wheels
    • 0.17% fail on Attachment

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