Mercedes-Benz M-Class MOT Results

Registered in 2004
52.9% pass rate
from 3,599 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 2004 cars and highlighted areas where the Mercedes-Benz M-Class is unusually good or bad.

  • 24% fail on Lamps, reflectors and electrical equipment (21% worse than other 2004 cars)
    • 7.9% fail on Stop lamp (56% worse than other 2004 cars)
    • 6.5% fail on Headlamps
      • 5.9% fail on Headlamp
      • 0.61% fail on Headlamp levelling device (110% worse than other 2004 cars)
      • 0.028% fail on Matched pair
      • 0.028% fail on Dipswitch
    • 6.0% fail on Direction indicators (110% worse than other 2004 cars)
      • 6.0% fail on Flashing type (110% worse than other 2004 cars)
        • 3.4% fail on Individual direction indicators (94% worse than other 2004 cars)
        • 2.4% fail on Side repeaters (140% worse than other 2004 cars)
        • 0.53% fail on All direction indicators (2 times worse than other 2004 cars)
    • 4.0% fail on Registration plate lamp(s) (38% worse than other 2004 cars)
    • 4.0% fail on Headlamp aim
      • 3.5% fail on Headlamp aim
      • 0.53% fail on Headlamp aim not tested
    • 3.9% fail on Position lamps
      • 3.8% fail on Position lamp
      • 0.11% fail on All position lamps
    • 1.4% fail on Electrical equipment (52% worse than other 2004 cars)
      • 1.0% fail on Horn (91% worse than other 2004 cars)
      • 0.31% fail on Battery(ies)
      • 0.083% fail on Electrical wiring
      • 0.056% fail on Trailer electrical socket
    • 0.89% fail on Front and rear fog lamps
      • 0.86% fail on Rear fog lamp
        • 0.72% fail on Rear fog lamp (41% better than other 2004 cars)
        • 0.31% fail on Switch (6 times worse than other 2004 cars)
      • 0.028% fail on Front fog lamps
        • 0.028% fail on Front fog lamps
    • 0.11% fail on Mandatory tell-tales
      • 0.11% fail on Rear fog lamp tell-tale
    • 0.028% fail on Reversing lamps
      • 0.028% fail on Reversing lamps
  • 19% fail on Suspension
    • 7.9% fail on Springs (100% worse than other 2004 cars)
      • 7.9% fail on Coil springs (100% worse than other 2004 cars)
        • 7.9% fail on Coil spring (110% worse than other 2004 cars)
    • 7.5% fail on Anti-roll bars (21% worse than other 2004 cars)
      • 3.6% fail on Pins and bushes (9 times worse than other 2004 cars)
      • 2.6% fail on Linkage (4 times worse than other 2004 cars)
      • 1.7% fail on Linkage pins and bushes (2 times worse than other 2004 cars)
      • 0.36% fail on Attachment bracket and mounting (5 times worse than other 2004 cars)
      • 0.19% fail on Anti-roll bar
      • 0.028% fail on Ball joint
      • 0.028% fail on Linkage ball joints
      • 0.028% fail on Linkage attachment bracket and mounting
    • 5.3% fail on Suspension arms
      • 4.1% fail on Ball joint (46% worse than other 2004 cars)
      • 1.4% fail on Ball joint dust cover (45% worse than other 2004 cars)
      • 0.14% fail on Pins and bushes (94% better than other 2004 cars)
      • 0.028% fail on Attachment bracket and mounting
    • 1.3% fail on Other suspension component (150% worse than other 2004 cars)
      • 1.0% fail on Ball joint (2 times worse than other 2004 cars)
      • 0.22% fail on Ball joint dust cover
      • 0.028% fail on Other suspension component
    • 0.47% fail on Wheel bearings (71% better than other 2004 cars)
    • 0.44% fail on Shock absorbers (70% better than other 2004 cars)
    • 0.11% fail on Suspension rods
      • 0.056% fail on Ball joint
      • 0.028% fail on Suspension rod
      • 0.028% fail on Ball joint dust cover
    • 0.056% fail on Sub-frames (88% better than other 2004 cars)
      • 0.056% fail on Sub-frame
    • 0.028% fail on Macpherson strut
      • 0.028% fail on Macpherson strut
    • 0.028% fail on Component mounting prescribed areas
  • 16% fail on Brakes (12% worse than other 2004 cars)
    • 6.6% 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)
        • 0.056% fail on Gradient tester (sp)
        • 0.028% fail on Plate brake tester (sp)
      • 1.7% fail on Parking brake performance
        • 1.6% fail on Rbt
          • 1.5% fail on Parking brake performance
          • 0.11% fail on Parking brake efficiency (Trikes, quads and pre-68 vehicles)
          • 0.056% fail on Parking (secondary brake performance)
        • 0.083% fail on Plate brake tester
          • 0.083% fail on Parking (secondary brake performance)
      • 0.53% fail on Service brake performance (82% better than other 2004 cars)
        • 0.53% fail on Rbt (82% better than other 2004 cars)
          • 0.44% fail on Service brake performance (81% better than other 2004 cars)
          • 0.083% fail on Service brake imbalance (87% better than other 2004 cars)
      • 0.50% fail on Brake performance not tested
      • 0.39% fail on Service Brake Efficiency (sp) (63% better than other 2004 cars)
        • 0.25% fail on Rbt (sp) (76% better than other 2004 cars)
          • 0.14% fail on Service brake performance
          • 0.14% fail on Service brake imbalance (82% better than other 2004 cars)
        • 0.14% fail on Decelerometer (sp) (7 times worse than other 2004 cars)
    • 5.6% fail on Rigid brake pipes (51% worse than other 2004 cars)
    • 5.5% fail on Mechanical brake components (52% worse than other 2004 cars)
      • 4.9% fail on Brake linings and pads (100% worse than other 2004 cars)
        • 4.9% fail on Brake pads (100% worse than other 2004 cars)
      • 0.78% fail on Brake discs and drums (39% better than other 2004 cars)
        • 0.78% fail on Brake discs (39% better than other 2004 cars)
    • 1.4% fail on ABS / EBS / ESC
      • 0.86% fail on Anti-lock braking system
      • 0.86% fail on Electronic stability control (140% worse than other 2004 cars)
      • 0.083% fail on Electronic braking system (9 times worse than other 2004 cars)
    • 0.39% fail on Parking brake control
      • 0.39% fail on Lever
    • 0.33% fail on Service brake pedal or hand lever
      • 0.25% fail on Pedal
      • 0.083% fail on Hand lever
    • 0.17% fail on Hydraulic systems
      • 0.11% fail on Brake fluid
      • 0.028% fail on Servos
      • 0.028% fail on Reservoirs
    • 0.11% fail on Flexible brake hoses (71% better than other 2004 cars)
    • 0.083% fail on Air and vacuum systems
      • 0.056% fail on Leaks
      • 0.028% fail on Pressure/vacuum build up
    • 0.056% fail on Other components and prescribed areas
      • 0.056% fail on Other components
  • 15% fail on Steering (2 times worse than other 2004 cars)
    • 12% fail on Steering linkage components (2 times worse than other 2004 cars)
      • 11% fail on Track rod end (2 times worse than other 2004 cars)
      • 0.75% fail on Ball joint (2 times worse than other 2004 cars)
      • 0.17% fail on Drag link end
      • 0.11% fail on Steering arm (4 times worse than other 2004 cars)
      • 0.11% fail on Other components (6 times worse than other 2004 cars)
        • 0.083% fail on Steering linkage (7 times worse than other 2004 cars)
        • 0.028% fail on Steering component
    • 2.3% fail on Steering gear (190% worse than other 2004 cars)
      • 2.2% fail on Steering rack (200% worse than other 2004 cars)
      • 0.028% fail on Steering box
    • 0.78% fail on Power steering (140% worse than other 2004 cars)
      • 0.44% fail on Other components (2 times worse than other 2004 cars)
      • 0.14% fail on Operation
      • 0.14% fail on Pipes and hoses
      • 0.083% fail on Rams (3 times worse than other 2004 cars)
      • 0.028% fail on Pump
    • 0.69% fail on Steering play (3 times worse than other 2004 cars)
      • 0.69% fail on Steering rack (3 times worse than other 2004 cars)
    • 0.028% fail on Steering coupling
      • 0.028% fail on Universal joint
    • 0.028% fail on Electronic power steering
  • 6.4% fail on Visibility (21% better than other 2004 cars)
    • 3.0% fail on Wipers (26% better than other 2004 cars)
    • 2.9% fail on Washers
    • 0.53% fail on View to rear
      • 0.50% fail on Mirrors
      • 0.028% fail on Indirect vision devices
    • 0.17% fail on Driver's view
    • 0.17% fail on Condition of glass
      • 0.17% fail on Windscreen
    • 0.056% fail on Bonnet
  • 6.2% fail on Noise, emissions and leaks (23% better than other 2004 cars)
    • 5.4% fail on Exhaust emissions (29% better than other 2004 cars)
      • 4.9% fail on Compression ignition (190% worse than other 2004 cars)
        • 4.1% fail on Pre 01/07/2008 Turbo (3 times worse than other 2004 cars)
        • 0.44% fail on Emissions not tested (130% worse than other 2004 cars)
        • 0.14% fail on Malfunction indicator lamp (70% better than other 2004 cars)
        • 0.083% fail on Emission control equipment
          • 0.028% fail on Catalytic converter
          • 0.028% fail on Exhaust gas recirculation valve
          • 0.028% fail on Other emission control equipment
        • 0.056% fail on Pre 01/07/2008 Non turbo
        • 0.056% fail on On or after 01/07/2008
        • 0.056% fail on On or after 01/01/2014
        • 0.028% fail on Pre 01/01/1980 visual
      • 0.47% fail on Spark ignition (92% better than other 2004 cars)
        • 0.31% fail on Malfunction indicator lamp (91% better than other 2004 cars)
        • 0.14% fail on Catalyst emissions (95% better than other 2004 cars)
        • 0.028% fail on Emissions not tested
    • 0.97% fail on Fluid leaks (62% worse than other 2004 cars)
      • 0.81% fail on Engine oil leaks (68% worse than other 2004 cars)
      • 0.11% fail on Other leaks
      • 0.083% fail on Transmission oil leaks
    • 0.056% fail on Noise suppression
      • 0.028% fail on Sound deadening material
      • 0.028% fail on Undertray
  • 5.5% fail on Tyres (27% better than other 2004 cars)
    • 3.7% fail on Tread depth (20% better than other 2004 cars)
    • 2.2% fail on Condition (29% better than other 2004 cars)
    • 0.056% fail on Size/type (83% better than other 2004 cars)
  • 4.1% fail on Body, chassis, structure (55% better than other 2004 cars)
    • 1.9% fail on Transmission (47% better than other 2004 cars)
      • 1.7% fail on Drive shafts (52% better than other 2004 cars)
        • 1.7% fail on Joints (52% better than other 2004 cars)
        • 0.028% fail on Flexible couplings
      • 0.28% fail on Prop shafts
        • 0.28% fail on Joints
    • 0.69% fail on Exhaust system (80% better than other 2004 cars)
    • 0.56% fail on Bumpers (150% worse than other 2004 cars)
    • 0.47% fail on Fuel system
      • 0.36% fail on System (3 times worse than other 2004 cars)
      • 0.083% fail on Pipe
      • 0.028% fail on Tank
    • 0.25% fail on Seats
      • 0.19% fail on Driver's seat
      • 0.056% fail on Passenger's seat
    • 0.19% fail on Body
      • 0.11% fail on Other body component
      • 0.083% fail on Panel
    • 0.083% fail on Integral vehicle structure (83% better than other 2004 cars)
      • 0.083% fail on Integral vehicle structure condition (83% better than other 2004 cars)
      • 0.028% fail on Sub-frame
        • 0.028% fail on Sub-frame condition
    • 0.083% fail on Spare wheel
      • 0.083% fail on Carrier
    • 0.083% fail on Towbar
      • 0.028% fail on Towbar condition
      • 0.028% fail on Other towbar components
      • 0.028% fail on Vehicle structure
    • 0.083% fail on Undertray
    • 0.056% fail on Doors (88% better than other 2004 cars)
      • 0.028% fail on Front passenger's door
        • 0.028% fail on Catch
      • 0.028% fail on Other passenger's door
        • 0.028% fail on Door condition
    • 0.028% fail on Chassis
      • 0.028% fail on Chassis condition
    • 0.028% fail on Cabs
      • 0.028% fail on Prescribed areas
    • 0.028% fail on Passenger compartment
  • 2.2% fail on Seat belts and supplementary restraint systems (30% better than other 2004 cars)
    • 1.6% fail on SRS malfunction indicator lamp
    • 0.58% fail on Seat belts (63% better than other 2004 cars)
      • 0.47% fail on Condition
      • 0.056% fail on Requirements
      • 0.028% fail on Prescribed areas
      • 0.028% fail on Attachment
  • 0.97% fail on Road Wheels (110% worse than other 2004 cars)
    • 0.97% fail on Attachment (180% worse than other 2004 cars)
  • 0.64% fail on Identification of the vehicle
    • 0.64% fail on Registration plates
  • 0.11% fail on Seat belt installation check (5 times worse than other 2004 cars)
    • 0.083% fail on Belt(s)/padding (7 times worse than other 2004 cars)
    • 0.028% fail on Anchorages

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