Mercedes-Benz C-Class MOT Results

Registered in 2004
55.5% pass rate
from 10,707 tests in 2020
(5.6% better than other 2004 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 2004 cars and highlighted areas where the Mercedes-Benz C-Class is unusually good or bad.

  • 23% fail on Suspension (29% worse than other 2004 cars)
    • 12% fail on Suspension arms (94% worse than other 2004 cars)
      • 8.5% fail on Ball joint (2 times worse than other 2004 cars)
      • 2.5% fail on Pins and bushes
      • 1.7% fail on Ball joint dust cover (79% worse than other 2004 cars)
      • 0.25% fail on Suspension arm
      • 0.056% fail on Attachment bracket and mounting
    • 8.6% fail on Anti-roll bars (39% worse than other 2004 cars)
      • 2.8% fail on Linkage ball joint dust cover (64% worse than other 2004 cars)
      • 2.1% fail on Linkage ball joints
      • 1.6% fail on Ball joint dust cover (81% worse than other 2004 cars)
      • 1.2% fail on Linkage pins and bushes (150% worse than other 2004 cars)
      • 0.78% fail on Pins and bushes (130% worse than other 2004 cars)
      • 0.67% fail on Ball joint
      • 0.21% fail on Linkage (54% better than other 2004 cars)
      • 0.056% fail on Anti-roll bar
      • 0.037% fail on Attachment bracket and mounting
      • 0.0093% fail on Linkage attachment bracket and mounting
    • 7.7% fail on Springs (97% worse than other 2004 cars)
      • 7.7% fail on Coil springs (99% worse than other 2004 cars)
        • 7.7% fail on Coil spring (100% worse than other 2004 cars)
        • 0.065% fail on Mounting
      • 0.019% fail on Spring mounting prescribed areas
    • 0.74% fail on Wheel bearings (54% better than other 2004 cars)
    • 0.41% fail on Shock absorbers (72% better than other 2004 cars)
    • 0.38% fail on Other suspension component
      • 0.31% fail on Ball joint
      • 0.037% fail on Ball joint dust cover
      • 0.028% fail on Pins and bushes
      • 0.0093% fail on Other suspension component
    • 0.15% fail on Suspension rods
      • 0.056% fail on Ball joint
      • 0.047% fail on Suspension rod (2 times worse than other 2004 cars)
      • 0.037% fail on Ball joint dust cover
      • 0.0093% fail on Pins and bushes
    • 0.11% fail on Macpherson strut (54% better than other 2004 cars)
      • 0.075% fail on Macpherson strut
      • 0.019% fail on Attachment bracket and mounting (80% better than other 2004 cars)
      • 0.0093% fail on Pins and bushes
      • 0.0093% fail on Ball joint
    • 0.075% fail on Sub-frames (84% better than other 2004 cars)
      • 0.056% fail on Sub-frame (73% better than other 2004 cars)
      • 0.0093% fail on Sub-frame mounting prescribed areas
      • 0.0093% fail on Ball joint
    • 0.0093% fail on Axles
      • 0.0093% fail on Axle
  • 14% fail on Lamps, reflectors and electrical equipment (29% better than other 2004 cars)
    • 4.6% fail on Direction indicators (62% worse than other 2004 cars)
      • 4.6% fail on Flashing type (62% worse than other 2004 cars)
        • 2.9% fail on Individual direction indicators (63% worse than other 2004 cars)
        • 1.5% fail on Side repeaters (46% worse than other 2004 cars)
        • 0.39% fail on All direction indicators (150% worse than other 2004 cars)
        • 0.047% fail on Switch (3 times worse than other 2004 cars)
      • 0.0093% fail on Semaphore
        • 0.0093% fail on Switch
    • 3.9% fail on Headlamp aim (14% better than other 2004 cars)
      • 3.7% fail on Headlamp aim
      • 0.21% fail on Headlamp aim not tested (48% better than other 2004 cars)
    • 3.5% fail on Headlamps (36% better than other 2004 cars)
      • 3.3% fail on Headlamp (36% better than other 2004 cars)
      • 0.19% fail on Headlamp levelling device
    • 2.5% fail on Stop lamp (51% better than other 2004 cars)
    • 1.6% fail on Registration plate lamp(s) (46% better than other 2004 cars)
    • 1.3% fail on Position lamps (62% better than other 2004 cars)
      • 1.2% fail on Position lamp (62% better than other 2004 cars)
      • 0.019% fail on All position lamps
      • 0.0093% fail on Switch
    • 0.37% fail on Front and rear fog lamps (70% better than other 2004 cars)
      • 0.34% fail on Rear fog lamp (73% better than other 2004 cars)
        • 0.33% fail on Rear fog lamp (73% better than other 2004 cars)
        • 0.019% fail on Switch
      • 0.037% fail on Front fog lamps (10 times worse than other 2004 cars)
        • 0.028% fail on Front fog lamps (8 times worse than other 2004 cars)
        • 0.0093% fail on Front fog lamp switch
    • 0.37% fail on Electrical equipment (60% better than other 2004 cars)
      • 0.22% fail on Horn (57% better than other 2004 cars)
      • 0.12% fail on Battery(ies) (64% better than other 2004 cars)
      • 0.019% fail on Trailer electrical socket
      • 0.0093% fail on Electrical wiring
    • 0.019% fail on Hazard warning (84% better than other 2004 cars)
      • 0.019% fail on Switch (84% better than other 2004 cars)
    • 0.019% fail on Rear reflectors
    • 0.019% fail on Mandatory tell-tales
      • 0.019% fail on Main beam tell-tale
    • 0.0093% fail on Daytime running lamps
    • 0.0093% fail on Reversing lamps
      • 0.0093% fail on Reversing lamps
  • 12% fail on Brakes (18% better than other 2004 cars)
    • 6.2% fail on Brake performance (19% better than other 2004 cars)
      • 3.5% fail on Parking brake efficiency (sp) (19% better than other 2004 cars)
        • 3.5% fail on Rbt (sp) (15% better than other 2004 cars)
        • 0.037% fail on Decelerometer (sp) (84% better than other 2004 cars)
        • 0.0093% fail on Plate brake tester (sp)
      • 2.5% fail on Service brake performance (16% better than other 2004 cars)
        • 2.5% fail on Rbt (15% better than other 2004 cars)
          • 2.1% fail on Service brake performance
          • 0.48% fail on Service brake imbalance
        • 0.019% fail on Plate brake tester
          • 0.019% fail on Service brake efficiency (Trikes, quads and pre-68 vehicles)
        • 0.0093% fail on Decelerometer
          • 0.0093% fail on Service brake performance
      • 1.2% fail on Parking brake performance (34% better than other 2004 cars)
        • 1.2% fail on Rbt (35% better than other 2004 cars)
          • 0.90% fail on Parking brake performance (43% better than other 2004 cars)
          • 0.19% fail on Parking (secondary brake performance)
          • 0.093% fail on Parking brake efficiency (Trikes, quads and pre-68 vehicles) (180% worse than other 2004 cars)
        • 0.037% fail on Plate brake tester
          • 0.028% fail on Parking (secondary brake performance)
          • 0.0093% fail on Parking brake performance
        • 0.0093% fail on Decelerometer
          • 0.0093% fail on Parking brake efficiency (Trikes, quads and pre-68 vehicles)
      • 0.79% fail on Service Brake Efficiency (sp) (25% better than other 2004 cars)
        • 0.78% fail on Rbt (sp)
          • 0.56% fail on Service brake imbalance (29% better than other 2004 cars)
          • 0.29% fail on Service brake performance
        • 0.0093% fail on Decelerometer (sp)
      • 0.16% fail on Brake performance not tested
    • 2.8% fail on Rigid brake pipes (25% better than other 2004 cars)
    • 2.7% fail on Mechanical brake components (26% better than other 2004 cars)
      • 2.3% fail on Brake linings and pads
        • 2.3% fail on Brake pads
        • 0.037% fail on Brake linings
      • 0.46% fail on Brake discs and drums (64% better than other 2004 cars)
        • 0.45% fail on Brake discs (65% better than other 2004 cars)
        • 0.0093% fail on Brake drums
      • 0.084% fail on Brake cables, rods, levers and linkages (69% better than other 2004 cars)
        • 0.028% fail on Lever
        • 0.028% fail on Relay lever (12 times worse than other 2004 cars)
        • 0.019% fail on Cable (91% better than other 2004 cars)
        • 0.0093% fail on Linkage
    • 1.4% fail on ABS / EBS / ESC
      • 0.99% fail on Electronic stability control (180% worse than other 2004 cars)
      • 0.48% fail on Anti-lock braking system (56% better than other 2004 cars)
    • 0.80% fail on Parking brake control (49% worse than other 2004 cars)
      • 0.78% fail on Lever (51% worse than other 2004 cars)
      • 0.028% fail on Electronic parking brake
    • 0.19% fail on Service brake pedal or hand lever (63% better than other 2004 cars)
      • 0.15% fail on Pedal
      • 0.037% fail on Hand lever (88% better than other 2004 cars)
    • 0.18% fail on Flexible brake hoses (54% better than other 2004 cars)
    • 0.10% fail on Hydraulic systems (59% better than other 2004 cars)
      • 0.084% fail on Brake fluid
      • 0.0093% fail on Servos
      • 0.0093% fail on Master cylinder
    • 0.037% fail on Brake actuators (including spring brakes or hydraulic cylinders) (84% better than other 2004 cars)
      • 0.037% fail on Hydraulic brake callipers (76% better than other 2004 cars)
    • 0.0093% fail on Air and vacuum systems
      • 0.0093% fail on Operation
    • 0.0093% fail on Other components and prescribed areas
      • 0.0093% fail on Other components
  • 9.2% fail on Noise, emissions and leaks (14% worse than other 2004 cars)
    • 9.0% fail on Exhaust emissions (18% worse than other 2004 cars)
      • 5.1% fail on Spark ignition (14% better than other 2004 cars)
        • 3.7% fail on Malfunction indicator lamp
        • 1.9% fail on Catalyst emissions (26% better than other 2004 cars)
        • 0.25% fail on Emissions not tested (67% better than other 2004 cars)
        • 0.047% fail on Non catalyst emissions
      • 4.0% fail on Compression ignition (140% worse than other 2004 cars)
        • 2.4% fail on Pre 01/07/2008 Turbo (160% worse than other 2004 cars)
        • 1.3% fail on Malfunction indicator lamp (180% worse than other 2004 cars)
        • 0.37% fail on Emissions not tested (91% worse than other 2004 cars)
        • 0.084% fail on On or after 01/07/2008 (190% worse than other 2004 cars)
        • 0.075% fail on Pre 01/07/2008 Non turbo
        • 0.028% fail on On or after 01/01/2014
    • 0.35% fail on Fluid leaks (41% better than other 2004 cars)
      • 0.22% fail on Engine oil leaks (53% better than other 2004 cars)
      • 0.084% fail on Transmission oil leaks (150% worse than other 2004 cars)
      • 0.047% fail on Other leaks
    • 0.019% fail on Noise suppression
      • 0.019% fail on Undertray
  • 7.9% fail on Tyres
    • 5.1% fail on Tread depth
    • 3.1% fail on Condition
    • 0.24% fail on Size/type
  • 5.1% fail on Steering
    • 4.4% fail on Steering linkage components (17% worse than other 2004 cars)
      • 4.2% fail on Track rod end (23% worse than other 2004 cars)
      • 0.19% fail on Ball joint
      • 0.0093% fail on Drag link end
      • 0.0093% fail on Steering arm
      • 0.0093% fail on Locking devices
    • 0.72% fail on Steering gear
      • 0.72% fail on Steering rack
    • 0.047% fail on Power steering (86% better than other 2004 cars)
      • 0.019% fail on Other components (84% better than other 2004 cars)
      • 0.0093% fail on Operation
      • 0.0093% fail on Pipes and hoses
      • 0.0093% fail on Rams
    • 0.047% fail on Steering play (70% better than other 2004 cars)
      • 0.047% fail on Steering rack (69% better than other 2004 cars)
    • 0.0093% fail on Steering wheel
    • 0.0093% fail on Steering column
    • 0.0093% fail on Steering shaft
  • 5.1% fail on Visibility (36% better than other 2004 cars)
    • 2.7% fail on Wipers (34% better than other 2004 cars)
    • 2.2% fail on Washers (41% better than other 2004 cars)
    • 0.41% fail on View to rear
      • 0.40% fail on Mirrors
      • 0.0093% fail on Indirect vision devices
    • 0.13% fail on Driver's view
    • 0.10% fail on Condition of glass
      • 0.10% fail on Windscreen
    • 0.065% fail on Bonnet (69% better than other 2004 cars)
  • 3.7% fail on Body, chassis, structure (59% better than other 2004 cars)
    • 2.7% fail on Exhaust system (22% better than other 2004 cars)
    • 0.56% fail on Fuel system
      • 0.34% fail on Fuel cap/sealing device
      • 0.084% fail on System
      • 0.075% fail on Hose (2 times worse than other 2004 cars)
      • 0.065% fail on Pipe
    • 0.11% fail on Body (61% better than other 2004 cars)
      • 0.084% fail on Other body component
      • 0.028% fail on Panel (77% better than other 2004 cars)
    • 0.11% fail on Undertray
    • 0.10% fail on Bumpers (54% better than other 2004 cars)
    • 0.075% fail on Seats (68% better than other 2004 cars)
      • 0.075% fail on Driver's seat
    • 0.065% fail on Doors (86% better than other 2004 cars)
      • 0.037% fail on Front passenger's door (73% better than other 2004 cars)
        • 0.037% fail on Door condition (72% better than other 2004 cars)
      • 0.028% fail on Other passenger's door (88% better than other 2004 cars)
        • 0.028% fail on Door condition (88% better than other 2004 cars)
    • 0.047% fail on Integral vehicle structure (91% better than other 2004 cars)
      • 0.028% fail on Integral vehicle structure condition (94% better than other 2004 cars)
      • 0.019% fail on Sub-frame
        • 0.019% fail on Sub-frame condition
    • 0.037% fail on Engine mounting
      • 0.037% fail on Engine mounting condition
    • 0.028% fail on Transmission (99% better than other 2004 cars)
      • 0.019% fail on Drive shafts (99% better than other 2004 cars)
        • 0.019% fail on Joints (99% better than other 2004 cars)
      • 0.0093% fail on Prop shafts
        • 0.0093% fail on Prop shaft
    • 0.028% fail on Boot lid
      • 0.028% fail on Boot lid condition
    • 0.0093% fail on Chassis
      • 0.0093% fail on Chassis condition
  • 2.5% fail on Seat belts and supplementary restraint systems (19% better than other 2004 cars)
    • 2.1% fail on SRS malfunction indicator lamp (35% worse than other 2004 cars)
    • 0.43% fail on Seat belts (72% better than other 2004 cars)
      • 0.35% fail on Condition (40% better than other 2004 cars)
      • 0.047% fail on Requirements
      • 0.019% fail on Prescribed areas (98% better than other 2004 cars)
      • 0.019% fail on Attachment
  • 0.82% fail on Road Wheels (74% worse than other 2004 cars)
    • 0.75% fail on Attachment (110% worse than other 2004 cars)
    • 0.084% fail on Condition
  • 0.72% fail on Identification of the vehicle
    • 0.72% fail on Registration plates

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