Mercedes-Benz S-Class MOT Results

Registered in 1989
73.6% pass rate
from 717 tests in 2020
(20% 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.

  • 13% fail on Lamps, reflectors and electrical equipment
    • 4.7% fail on Headlamp aim
      • 4.6% fail on Headlamp aim
      • 0.14% fail on Headlamp aim not tested
    • 2.5% fail on Stop lamp
    • 2.1% fail on Headlamps
      • 1.5% fail on Headlamp (52% better than other 1989 cars)
      • 0.42% fail on Headlamp levelling device (4 times worse than other 1989 cars)
      • 0.14% fail on Dipswitch
    • 2.0% fail on Front and rear fog lamps
      • 2.0% fail on Rear fog lamp
        • 2.0% fail on Rear fog lamp
        • 0.56% fail on Switch
    • 1.8% fail on Direction indicators
      • 1.8% fail on Flashing type
        • 1.1% fail on Individual direction indicators
        • 0.42% fail on Side repeaters
        • 0.28% fail on All direction indicators
    • 0.70% fail on Position lamps
      • 0.56% fail on Position lamp
      • 0.14% fail on All position lamps
    • 0.56% fail on Hazard warning
      • 0.56% fail on Switch
    • 0.56% fail on Mandatory tell-tales
      • 0.56% fail on Rear fog lamp tell-tale
    • 0.56% fail on Electrical equipment (78% better than other 1989 cars)
      • 0.56% fail on Horn
    • 0.42% fail on Registration plate lamp(s) (74% better than other 1989 cars)
  • 8.8% fail on Brakes
    • 3.9% fail on Brake performance (48% better than other 1989 cars)
      • 2.0% fail on Parking brake efficiency (sp)
        • 2.0% fail on Rbt (sp)
      • 1.5% fail on Service brake performance (53% better than other 1989 cars)
        • 1.5% fail on Rbt (52% better than other 1989 cars)
          • 1.5% fail on Service brake performance
          • 0.28% fail on Service brake imbalance
      • 0.56% fail on Service Brake Efficiency (sp) (82% better than other 1989 cars)
        • 0.56% fail on Rbt (sp) (81% better than other 1989 cars)
          • 0.42% fail on Service brake imbalance (80% better than other 1989 cars)
          • 0.14% fail on Service brake performance
      • 0.42% fail on Parking brake performance
        • 0.42% fail on Rbt
          • 0.28% fail on Parking brake performance
          • 0.14% fail on Parking (secondary brake performance)
    • 2.0% fail on Rigid brake pipes
    • 1.4% fail on Mechanical brake components
      • 1.3% fail on Brake linings and pads
        • 1.3% fail on Brake pads
      • 0.14% fail on Brake discs and drums
        • 0.14% fail on Brake discs
    • 1.4% fail on ABS / EBS / ESC (3 times worse than other 1989 cars)
      • 1.4% fail on Anti-lock braking system (3 times worse than other 1989 cars)
    • 0.70% fail on Flexible brake hoses
    • 0.56% fail on Hydraulic systems
      • 0.56% fail on Brake fluid
    • 0.28% fail on Service brake pedal or hand lever
      • 0.14% fail on Pedal
      • 0.14% fail on Hand lever
    • 0.28% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.14% fail on Hydraulic brake callipers
      • 0.14% fail on Hydraulic brake cylinder
    • 0.14% fail on Parking brake control
      • 0.14% fail on Lever
    • 0.14% fail on Other components and prescribed areas
      • 0.14% fail on Prescribed areas
        • 0.14% fail on Master cylinder/servo mounting
  • 6.7% fail on Body, chassis, structure
    • 2.6% fail on Exhaust system
    • 1.3% fail on Fuel system
      • 0.98% fail on Pipe (190% worse than other 1989 cars)
      • 0.14% fail on Hose
      • 0.14% fail on System
    • 1.1% fail on Seats
      • 0.98% fail on Driver's seat
      • 0.84% fail on Passenger's seat
    • 0.84% fail on Chassis
      • 0.84% fail on Chassis condition
    • 0.56% fail on Integral vehicle structure
      • 0.56% fail on Integral vehicle structure condition
    • 0.56% fail on Transmission (74% better than other 1989 cars)
      • 0.42% fail on Drive shafts (77% better than other 1989 cars)
        • 0.42% fail on Joints (77% better than other 1989 cars)
      • 0.14% fail on Prop shafts
        • 0.14% fail on Flexible couplings
    • 0.42% fail on Bumpers
    • 0.28% fail on Body
      • 0.14% fail on Body condition
      • 0.14% fail on Panel
    • 0.28% fail on Floor
    • 0.14% fail on Engine mounting
      • 0.14% fail on Engine mounting condition
    • 0.14% fail on Doors
      • 0.14% fail on Other passenger's door
        • 0.14% fail on Door condition
  • 6.1% fail on Suspension (41% better than other 1989 cars)
    • 1.5% fail on Suspension arms
      • 0.98% fail on Ball joint dust cover
      • 0.28% fail on Pins and bushes
      • 0.14% fail on Suspension arm
      • 0.14% fail on Ball joint
    • 1.5% fail on Component mounting prescribed areas (64% better than other 1989 cars)
    • 1.1% fail on Wheel bearings
    • 0.84% fail on Anti-roll bars
      • 0.14% fail on Anti-roll bar
      • 0.14% fail on Attachment bracket and mounting
      • 0.14% fail on Pins and bushes
      • 0.14% fail on Linkage
      • 0.14% fail on Linkage ball joints
      • 0.14% fail on Ball joint dust cover
    • 0.70% fail on Shock absorbers
    • 0.56% fail on Springs
      • 0.56% fail on Coil springs
        • 0.56% fail on Coil spring
    • 0.56% fail on Sub-frames
      • 0.42% fail on Sub-frame mounting prescribed areas
      • 0.14% fail on Pins and bushes
    • 0.28% fail on Suspension rods
      • 0.14% fail on Pins and bushes
      • 0.14% fail on Ball joint dust cover
    • 0.14% fail on Axles
      • 0.14% fail on King pins
    • 0.14% fail on Other suspension component
      • 0.14% fail on Ball joint dust cover
    • 0.14% fail on Air/gas/fluid suspension
      • 0.14% fail on Suspension unit
  • 5.7% fail on Visibility
    • 3.6% fail on Washers
    • 2.2% fail on Wipers
    • 0.14% fail on Condition of glass
      • 0.14% fail on Windscreen
  • 2.9% fail on Noise, emissions and leaks (45% better than other 1989 cars)
    • 2.1% fail on Exhaust emissions (55% better than other 1989 cars)
      • 2.1% fail on Spark ignition (50% better than other 1989 cars)
        • 1.8% fail on Non catalyst emissions
        • 0.14% fail on Catalyst emissions
        • 0.14% fail on Emissions not tested
    • 0.98% fail on Fluid leaks
      • 0.98% fail on Engine oil leaks
  • 2.1% fail on Steering (50% better than other 1989 cars)
    • 1.7% fail on Steering linkage components
      • 1.3% fail on Track rod end
      • 0.28% fail on Ball joint
      • 0.14% fail on Drag link end
      • 0.14% fail on Other components
        • 0.14% fail on Steering component
    • 0.28% fail on Power steering
      • 0.14% fail on Pipes and hoses
      • 0.14% fail on Pump
    • 0.14% fail on Steering play
      • 0.14% fail on Steering box
  • 2.0% fail on Tyres
    • 1.3% fail on Tread depth
    • 0.84% fail on Condition
  • 0.70% fail on Identification of the vehicle
    • 0.70% fail on Registration plates
  • 0.56% fail on Seat belts and supplementary restraint systems (78% better than other 1989 cars)
    • 0.56% fail on Seat belts (78% better than other 1989 cars)
      • 0.42% fail on Prescribed areas (77% better than other 1989 cars)
      • 0.14% fail on Condition

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