Mercedes-Benz S-Class MOT Results

Registered in 1988
70.9% pass rate
from 501 tests in 2020
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 1988 cars and highlighted areas where the Mercedes-Benz S-Class is unusually good or bad.

  • 12% fail on Lamps, reflectors and electrical equipment
    • 3.8% fail on Headlamp aim
      • 3.8% fail on Headlamp aim
    • 2.2% fail on Front and rear fog lamps
      • 2.2% fail on Rear fog lamp
        • 2.0% fail on Rear fog lamp
        • 0.40% fail on Switch
      • 0.20% fail on Front fog lamps
        • 0.20% fail on Front fog lamp switch
    • 1.6% fail on Direction indicators
      • 1.6% fail on Flashing type
        • 0.80% fail on Individual direction indicators
        • 0.60% fail on Side repeaters
        • 0.20% fail on All direction indicators
    • 1.4% fail on Headlamps
      • 1.2% fail on Headlamp
      • 0.20% fail on Headlamp levelling device
    • 1.2% fail on Electrical equipment
      • 1.00% fail on Horn
      • 0.20% fail on Battery(ies)
    • 1.00% fail on Position lamps
      • 1.00% fail on Position lamp
    • 0.80% fail on Stop lamp (69% better than other 1988 cars)
    • 0.80% fail on Registration plate lamp(s)
    • 0.80% fail on Mandatory tell-tales
      • 0.60% fail on Rear fog lamp tell-tale
      • 0.20% fail on Main beam tell-tale
    • 0.60% fail on Hazard warning
      • 0.60% fail on Switch
  • 8.0% fail on Body, chassis, structure
    • 2.8% fail on Exhaust system
    • 1.8% fail on Fuel system
      • 1.00% fail on Pipe
      • 0.40% fail on Fuel cap/sealing device
      • 0.40% fail on System
    • 1.4% fail on Integral vehicle structure
      • 1.4% fail on Integral vehicle structure condition
    • 1.2% fail on Chassis
      • 1.2% fail on Chassis condition
    • 0.60% fail on Seats
      • 0.60% fail on Driver's seat
      • 0.40% fail on Passenger's seat
    • 0.40% fail on Transmission (81% better than other 1988 cars)
      • 0.20% fail on Drive shafts
        • 0.20% fail on Joints
      • 0.20% fail on Prop shafts
        • 0.20% fail on Flexible couplings
    • 0.20% fail on Body
      • 0.20% fail on Other body component
    • 0.20% fail on Doors
      • 0.20% fail on Other passenger's door
        • 0.20% fail on Door condition
  • 7.6% fail on Brakes
    • 4.4% fail on Brake performance (41% better than other 1988 cars)
      • 3.0% fail on Service brake performance
        • 3.0% fail on Rbt
          • 2.8% fail on Service brake performance
          • 0.20% fail on Service brake imbalance
      • 2.0% fail on Parking brake efficiency (sp)
        • 2.0% fail on Rbt (sp)
      • 1.4% fail on Service Brake Efficiency (sp)
        • 1.4% fail on Rbt (sp)
          • 1.00% fail on Service brake imbalance
          • 0.60% fail on Service brake performance
      • 0.40% fail on Parking brake performance
        • 0.40% fail on Rbt
          • 0.40% fail on Parking brake performance
    • 1.8% fail on Rigid brake pipes
    • 1.2% fail on ABS / EBS / ESC (3 times worse than other 1988 cars)
      • 1.2% fail on Anti-lock braking system (3 times worse than other 1988 cars)
    • 0.60% fail on Hydraulic systems
      • 0.40% fail on Brake fluid
      • 0.20% fail on Valves
    • 0.60% fail on Flexible brake hoses
    • 0.40% fail on Load sensing valves
    • 0.40% fail on Mechanical brake components
      • 0.40% fail on Brake linings and pads
        • 0.40% fail on Brake pads
    • 0.20% fail on Parking brake control
      • 0.20% fail on Lever
    • 0.20% fail on Other components and prescribed areas
      • 0.20% fail on Prescribed areas
        • 0.20% fail on Other braking system component
  • 7.4% fail on Suspension
    • 2.8% fail on Component mounting prescribed areas
    • 2.2% fail on Suspension arms
      • 1.4% fail on Ball joint dust cover (170% worse than other 1988 cars)
      • 0.60% fail on Ball joint
      • 0.20% fail on Suspension arm
      • 0.20% fail on Attachment bracket and mounting
      • 0.20% fail on Pins and bushes
    • 1.00% fail on Anti-roll bars
      • 0.60% fail on Attachment bracket and mounting (4 times worse than other 1988 cars)
      • 0.20% fail on Linkage pins and bushes
      • 0.20% fail on Linkage ball joints
    • 1.00% fail on Sub-frames
      • 0.80% fail on Sub-frame mounting prescribed areas
      • 0.20% fail on Pins and bushes
    • 0.80% fail on Wheel bearings
    • 0.40% fail on Springs
      • 0.40% fail on Coil springs
        • 0.40% fail on Coil spring
    • 0.40% fail on Shock absorbers
  • 4.8% fail on Visibility
    • 3.0% fail on Washers
    • 1.8% fail on Wipers
  • 3.8% fail on Noise, emissions and leaks
    • 2.8% fail on Exhaust emissions
      • 2.6% fail on Spark ignition
        • 1.8% fail on Non catalyst emissions
        • 0.80% fail on Catalyst emissions
      • 0.20% fail on Compression ignition
        • 0.20% fail on Pre 01/07/2008 Turbo
    • 0.80% fail on Fluid leaks
      • 0.40% fail on Transmission oil leaks
      • 0.40% fail on Other leaks
      • 0.20% fail on Engine oil leaks
    • 0.40% fail on Noise suppression (13 times worse than other 1988 cars)
      • 0.40% fail on Sound deadening material (13 times worse than other 1988 cars)
  • 2.8% fail on Steering
    • 1.6% fail on Steering linkage components
      • 1.4% fail on Track rod end
      • 0.40% fail on Drag link end
    • 0.60% fail on Power steering
      • 0.20% fail on Operation
      • 0.20% fail on Pipes and hoses
      • 0.20% fail on Other components
    • 0.20% fail on Steering gear
      • 0.20% fail on Steering box
    • 0.20% fail on Prescribed areas
    • 0.20% fail on Steering play
      • 0.20% fail on Steering box
  • 2.2% fail on Tyres
    • 1.2% fail on Tread depth
    • 1.00% fail on Condition
  • 0.80% fail on Seat belts and supplementary restraint systems
    • 0.80% fail on Seat belts
      • 0.80% fail on Prescribed areas
  • 0.20% fail on Identification of the vehicle
    • 0.20% fail on Registration plates
  • 0.20% fail on Road Wheels
    • 0.20% fail on Attachment

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