Mercedes-Benz M-Class MOT Results

Registered in 2004
54.2% pass rate
from 2,660 tests in 2021
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 2004 cars and highlighted areas where the Mercedes-Benz M-Class is unusually good or bad.

  • 21% fail on Lamps, reflectors and electrical equipment (24% worse than other 2004 cars)
    • 7.4% fail on Stop lamp (68% worse than other 2004 cars)
    • 7.0% fail on Direction indicators (160% worse than other 2004 cars)
      • 7.0% fail on Flashing type (160% worse than other 2004 cars)
        • 4.4% fail on Individual direction indicators (160% worse than other 2004 cars)
        • 2.7% fail on Side repeaters (180% worse than other 2004 cars)
        • 0.34% fail on All direction indicators (160% worse than other 2004 cars)
    • 6.1% fail on Headlamps
      • 5.4% fail on Headlamp
      • 0.68% fail on Headlamp levelling device (95% worse than other 2004 cars)
      • 0.15% fail on Dipswitch (4 times worse than other 2004 cars)
    • 2.8% fail on Registration plate lamp(s)
    • 2.7% fail on Headlamp aim (30% better than other 2004 cars)
      • 2.4% fail on Headlamp aim (30% better than other 2004 cars)
      • 0.30% fail on Headlamp aim not tested
    • 1.1% fail on Front and rear fog lamps
      • 1.1% fail on Rear fog lamp
        • 1.1% fail on Rear fog lamp
        • 0.038% fail on Switch
    • 0.56% fail on Electrical equipment
      • 0.30% fail on Horn
      • 0.26% fail on Battery(ies)
      • 0.038% fail on Electrical wiring
    • 0.41% fail on Position lamps
      • 0.41% fail on Position lamp
    • 0.075% fail on Rear reflectors
    • 0.075% fail on Mandatory tell-tales
      • 0.075% fail on Rear fog lamp tell-tale
      • 0.038% fail on Main beam tell-tale
  • 20% fail on Suspension (14% worse than other 2004 cars)
    • 9.0% fail on Springs (110% worse than other 2004 cars)
      • 9.0% fail on Coil springs (110% worse than other 2004 cars)
        • 9.0% fail on Coil spring (110% worse than other 2004 cars)
    • 8.0% fail on Anti-roll bars (48% worse than other 2004 cars)
      • 4.2% fail on Pins and bushes (11 times worse than other 2004 cars)
      • 2.4% fail on Linkage (5 times worse than other 2004 cars)
      • 2.1% fail on Linkage pins and bushes (3 times worse than other 2004 cars)
      • 0.19% fail on Attachment bracket and mounting
      • 0.075% fail on Linkage ball joints (95% better than other 2004 cars)
      • 0.038% fail on Anti-roll bar
      • 0.038% fail on Ball joint dust cover
      • 0.038% fail on Linkage attachment bracket and mounting
    • 5.9% fail on Suspension arms
      • 4.5% fail on Ball joint (86% worse than other 2004 cars)
      • 1.6% fail on Ball joint dust cover (61% worse than other 2004 cars)
      • 0.19% fail on Pins and bushes (92% better than other 2004 cars)
      • 0.11% fail on Attachment bracket and mounting
      • 0.075% fail on Suspension arm (82% better than other 2004 cars)
    • 1.2% fail on Other suspension component (180% worse than other 2004 cars)
      • 1.0% fail on Ball joint (3 times worse than other 2004 cars)
      • 0.26% fail on Ball joint dust cover
    • 0.30% fail on Wheel bearings (80% better than other 2004 cars)
    • 0.30% fail on Sub-frames
      • 0.26% fail on Sub-frame
      • 0.038% fail on Attachment bracket and mounting
    • 0.26% fail on Component mounting prescribed areas (88% better than other 2004 cars)
    • 0.23% fail on Shock absorbers (74% better than other 2004 cars)
    • 0.11% fail on Macpherson strut
      • 0.075% fail on Ball joint dust cover (35 times worse than other 2004 cars)
      • 0.038% fail on Ball joint
    • 0.038% fail on Suspension rods
      • 0.038% fail on Ball joint
  • 15% fail on Brakes
    • 6.8% fail on Brake performance
      • 5.2% fail on Parking brake efficiency (sp)
        • 3.3% fail on Rbt (sp)
        • 1.8% fail on Decelerometer (sp) (6 times worse than other 2004 cars)
        • 0.075% fail on Gradient tester (sp) (4 times worse than other 2004 cars)
      • 1.1% fail on Parking brake performance
        • 0.90% fail on Rbt (44% better than other 2004 cars)
          • 0.71% fail on Parking brake performance (50% better than other 2004 cars)
          • 0.11% fail on Parking (secondary brake performance)
          • 0.075% fail on Parking brake efficiency (Trikes, quads and pre-68 vehicles)
        • 0.15% fail on Plate brake tester
          • 0.075% fail on Parking brake performance
          • 0.075% fail on Parking (secondary brake performance)
        • 0.075% fail on Decelerometer
          • 0.038% fail on Parking brake performance
          • 0.038% fail on Parking brake efficiency (Trikes, quads and pre-68 vehicles)
      • 0.86% fail on Brake performance not tested (130% worse than other 2004 cars)
      • 0.60% fail on Service Brake Efficiency (sp) (47% better than other 2004 cars)
        • 0.34% fail on Rbt (sp) (69% better than other 2004 cars)
          • 0.19% fail on Service brake performance
          • 0.19% fail on Service brake imbalance (77% better than other 2004 cars)
        • 0.26% fail on Decelerometer (sp) (9 times worse than other 2004 cars)
      • 0.56% fail on Service brake performance (81% better than other 2004 cars)
        • 0.49% fail on Rbt (83% better than other 2004 cars)
          • 0.41% fail on Service brake performance (83% better than other 2004 cars)
          • 0.11% fail on Service brake imbalance (81% better than other 2004 cars)
        • 0.075% fail on Decelerometer
          • 0.075% fail on Service brake performance
    • 5.5% fail on Rigid brake pipes (56% worse than other 2004 cars)
    • 3.9% fail on Mechanical brake components (30% worse than other 2004 cars)
      • 3.5% fail on Brake linings and pads (79% worse than other 2004 cars)
        • 3.5% fail on Brake pads (79% worse than other 2004 cars)
        • 0.038% fail on Brake linings
      • 0.56% fail on Brake discs and drums (51% better than other 2004 cars)
        • 0.56% fail on Brake discs (50% better than other 2004 cars)
      • 0.038% fail on Brake cables, rods, levers and linkages
        • 0.038% fail on Cable
    • 1.5% fail on ABS / EBS / ESC
      • 0.86% fail on Electronic stability control (150% worse than other 2004 cars)
      • 0.75% fail on Anti-lock braking system
      • 0.038% fail on Electronic braking system
    • 0.56% fail on Parking brake control
      • 0.56% fail on Lever
    • 0.53% fail on Service brake pedal or hand lever
      • 0.34% fail on Pedal
      • 0.19% fail on Hand lever
    • 0.11% fail on Hydraulic systems
      • 0.075% fail on Brake fluid
      • 0.038% fail on Servos
    • 0.11% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.075% fail on Hydraulic brake callipers
      • 0.038% fail on Hydraulic brake cylinder
    • 0.075% fail on Air and vacuum systems
      • 0.038% fail on Leaks
      • 0.038% fail on Servos
    • 0.075% fail on Flexible brake hoses (79% better than other 2004 cars)
  • 13% fail on Steering (180% worse than other 2004 cars)
    • 10% fail on Steering linkage components (2 times worse than other 2004 cars)
      • 9.1% fail on Track rod end (2 times worse than other 2004 cars)
      • 0.79% fail on Ball joint (3 times worse than other 2004 cars)
      • 0.15% fail on Other components (9 times worse than other 2004 cars)
        • 0.075% fail on Steering component (12 times worse than other 2004 cars)
        • 0.075% fail on Steering linkage (7 times worse than other 2004 cars)
      • 0.11% fail on Drag link end
      • 0.038% fail on Steering arm
      • 0.038% fail on Rear wheel steering
        • 0.038% fail on Components
    • 2.4% fail on Steering gear (180% worse than other 2004 cars)
      • 2.4% fail on Steering rack (190% worse than other 2004 cars)
    • 0.83% fail on Power steering (150% worse than other 2004 cars)
      • 0.34% fail on Other components (190% worse than other 2004 cars)
      • 0.23% fail on Pipes and hoses
      • 0.15% fail on Operation
      • 0.075% fail on Pump (5 times worse than other 2004 cars)
      • 0.038% fail on Rams
    • 0.68% fail on Steering play (4 times worse than other 2004 cars)
      • 0.68% fail on Steering rack (4 times worse than other 2004 cars)
    • 0.038% fail on Steering wheel
    • 0.038% fail on Steering column
  • 5.6% fail on Visibility (29% better than other 2004 cars)
    • 3.2% fail on Washers
    • 2.4% fail on Wipers (42% better than other 2004 cars)
    • 0.19% fail on View to rear
      • 0.19% fail on Mirrors
    • 0.11% fail on Condition of glass
      • 0.075% fail on Window (19 times worse than other 2004 cars)
      • 0.038% fail on Windscreen
    • 0.038% fail on Bonnet
  • 5.3% fail on Body, chassis, structure (41% better than other 2004 cars)
    • 2.0% fail on Transmission (42% better than other 2004 cars)
      • 1.6% fail on Drive shafts (51% better than other 2004 cars)
        • 1.6% fail on Joints (51% better than other 2004 cars)
      • 0.45% fail on Prop shafts (140% worse than other 2004 cars)
        • 0.30% fail on Joints
        • 0.15% fail on Prop shaft (3 times worse than other 2004 cars)
    • 1.2% fail on Exhaust system (63% better than other 2004 cars)
    • 0.90% fail on Bumpers (3 times worse than other 2004 cars)
    • 0.34% fail on Integral vehicle structure (60% better than other 2004 cars)
      • 0.30% fail on Integral vehicle structure condition (63% better than other 2004 cars)
      • 0.038% fail on Sub-frame
        • 0.038% fail on Sub-frame condition
    • 0.34% fail on Doors
      • 0.26% fail on Other passenger's door
        • 0.26% fail on Door condition
      • 0.075% fail on Front passenger's door
        • 0.075% fail on Door condition
    • 0.34% fail on Seats
      • 0.23% fail on Driver's seat
      • 0.11% fail on Passenger's seat
    • 0.30% fail on Body
      • 0.19% fail on Other body component
      • 0.11% fail on Panel
    • 0.23% fail on Fuel system
      • 0.11% fail on Tank
      • 0.075% fail on Pipe
      • 0.038% fail on System
    • 0.11% fail on Chassis (77% better than other 2004 cars)
      • 0.11% fail on Chassis condition (77% better than other 2004 cars)
    • 0.075% fail on Spare wheel
      • 0.075% fail on Carrier (5 times worse than other 2004 cars)
      • 0.038% fail on Spare wheel condition
  • 5.0% fail on Noise, emissions and leaks (35% better than other 2004 cars)
    • 4.2% fail on Exhaust emissions (41% better than other 2004 cars)
      • 4.0% fail on Compression ignition (2 times worse than other 2004 cars)
        • 3.4% fail on Pre 01/07/2008 Turbo (4 times worse than other 2004 cars)
        • 0.30% fail on Emissions not tested
        • 0.15% fail on Malfunction indicator lamp
        • 0.11% fail on On or after 01/07/2008
        • 0.038% fail on Pre 01/01/1980 visual
        • 0.038% fail on Pre 01/07/2008 Non turbo
      • 0.30% fail on Spark ignition (95% better than other 2004 cars)
        • 0.15% fail on Malfunction indicator lamp (95% better than other 2004 cars)
        • 0.11% fail on Catalyst emissions (96% better than other 2004 cars)
        • 0.038% fail on Non catalyst emissions
        • 0.038% fail on Emissions not tested
    • 0.79% fail on Fluid leaks
      • 0.56% fail on Engine oil leaks
      • 0.15% fail on Hydraulic fluid leaks (4 times worse than other 2004 cars)
      • 0.075% fail on Other leaks
  • 4.5% fail on Tyres (27% better than other 2004 cars)
    • 2.7% fail on Tread depth
    • 2.3% fail on Condition
    • 0.11% fail on Size/type
  • 2.5% fail on Seat belts and supplementary restraint systems
    • 1.8% fail on SRS malfunction indicator lamp
    • 0.64% fail on Seat belts (60% better than other 2004 cars)
      • 0.56% fail on Condition
      • 0.075% fail on Prescribed areas (92% better than other 2004 cars)
  • 0.79% fail on Road Wheels
    • 0.75% fail on Attachment (110% worse than other 2004 cars)
    • 0.038% fail on Condition
  • 0.53% fail on Identification of the vehicle
    • 0.53% fail on Registration plates

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