Mercedes-Benz B-Class MOT Results

Registered in 2008
59.3% pass rate
from 4,444 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 2008 cars and highlighted areas where the Mercedes-Benz B-Class is unusually good or bad.

  • 15% fail on Suspension
    • 7.7% fail on Springs (29% worse than other 2008 cars)
      • 7.7% fail on Coil springs (30% worse than other 2008 cars)
        • 7.7% fail on Coil spring (30% worse than other 2008 cars)
        • 0.045% fail on Mounting
    • 4.3% fail on Suspension arms
      • 4.0% fail on Ball joint (97% worse than other 2008 cars)
      • 0.18% fail on Pins and bushes (92% better than other 2008 cars)
      • 0.11% fail on Ball joint dust cover (84% better than other 2008 cars)
    • 3.6% fail on Anti-roll bars
      • 2.3% fail on Linkage ball joint dust cover (58% worse than other 2008 cars)
      • 0.81% fail on Ball joint dust cover
      • 0.32% fail on Linkage ball joints (77% better than other 2008 cars)
      • 0.18% fail on Ball joint (58% better than other 2008 cars)
      • 0.045% fail on Linkage pins and bushes
      • 0.023% fail on Anti-roll bar
      • 0.023% fail on Linkage
    • 1.2% fail on Shock absorbers
    • 0.41% fail on Other suspension component
      • 0.36% fail on Ball joint (140% worse than other 2008 cars)
      • 0.045% fail on Ball joint dust cover
    • 0.23% fail on Wheel bearings (75% better than other 2008 cars)
    • 0.090% fail on Suspension rods
      • 0.045% fail on Ball joint
      • 0.045% fail on Ball joint dust cover
    • 0.023% fail on Sub-frames
      • 0.023% fail on Pins and bushes
    • 0.023% fail on Component mounting prescribed areas
  • 13% fail on Lamps, reflectors and electrical equipment
    • 4.0% fail on Direction indicators (89% worse than other 2008 cars)
      • 4.0% fail on Flashing type (90% worse than other 2008 cars)
        • 2.6% fail on Individual direction indicators (93% worse than other 2008 cars)
        • 1.4% fail on Side repeaters (100% worse than other 2008 cars)
        • 0.16% fail on All direction indicators
    • 3.8% fail on Headlamps
      • 3.7% fail on Headlamp
      • 0.090% fail on Headlamp levelling device
    • 3.3% fail on Stop lamp
    • 3.0% fail on Headlamp aim
      • 2.7% fail on Headlamp aim
      • 0.43% fail on Headlamp aim not tested
    • 1.2% fail on Registration plate lamp(s) (44% better than other 2008 cars)
    • 0.54% fail on Front and rear fog lamps
      • 0.54% fail on Rear fog lamp
        • 0.54% fail on Rear fog lamp
    • 0.25% fail on Electrical equipment (52% better than other 2008 cars)
      • 0.25% fail on Horn
    • 0.045% fail on Position lamps
      • 0.045% fail on Position lamp
    • 0.045% fail on Rear reflectors
  • 13% fail on Brakes (29% worse than other 2008 cars)
    • 6.0% fail on Brake performance
      • 3.6% fail on Parking brake efficiency (sp) (43% worse than other 2008 cars)
        • 3.6% fail on Rbt (sp) (48% worse than other 2008 cars)
        • 0.023% fail on Decelerometer (sp)
      • 1.7% fail on Service brake performance (35% better than other 2008 cars)
        • 1.6% fail on Rbt (35% better than other 2008 cars)
          • 1.4% fail on Service brake performance (38% better than other 2008 cars)
          • 0.34% fail on Service brake imbalance
        • 0.068% fail on Plate brake tester
          • 0.045% fail on Service brake efficiency (Trikes, quads and pre-68 vehicles)
          • 0.023% fail on Service brake performance
      • 1.1% fail on Service Brake Efficiency (sp) (64% worse than other 2008 cars)
        • 1.1% fail on Rbt (sp) (67% worse than other 2008 cars)
          • 0.63% fail on Service brake performance (2 times worse than other 2008 cars)
          • 0.56% fail on Service brake imbalance
      • 1.1% fail on Parking brake performance
        • 0.99% fail on Rbt
          • 0.77% fail on Parking brake performance
          • 0.14% fail on Parking (secondary brake performance)
          • 0.090% fail on Parking brake efficiency (Trikes, quads and pre-68 vehicles)
        • 0.045% fail on Plate brake tester
          • 0.045% fail on Parking (secondary brake performance)
        • 0.023% fail on Decelerometer
          • 0.023% fail on Parking brake efficiency (Trikes, quads and pre-68 vehicles)
      • 0.34% fail on Brake performance not tested
    • 4.3% fail on Rigid brake pipes (2 times worse than other 2008 cars)
    • 3.6% fail on Mechanical brake components
      • 2.7% fail on Brake linings and pads
        • 2.6% fail on Brake pads
        • 0.068% fail on Brake linings
      • 1.3% fail on Brake discs and drums
        • 1.3% fail on Brake discs
      • 0.045% fail on Brake cables, rods, levers and linkages
        • 0.023% fail on Cable
        • 0.023% fail on Lever
    • 0.83% fail on Parking brake control (83% worse than other 2008 cars)
      • 0.83% fail on Lever (110% worse than other 2008 cars)
    • 0.70% fail on Service brake pedal or hand lever (85% worse than other 2008 cars)
      • 0.59% fail on Hand lever (160% worse than other 2008 cars)
      • 0.11% fail on Pedal
    • 0.65% fail on ABS / EBS / ESC
      • 0.36% fail on Anti-lock braking system (52% better than other 2008 cars)
      • 0.27% fail on Electronic stability control
      • 0.068% fail on Electronic braking system
    • 0.090% fail on Flexible brake hoses
    • 0.068% fail on Hydraulic systems
      • 0.068% fail on Brake fluid
    • 0.045% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.045% fail on Hydraulic brake callipers
    • 0.023% fail on Hand operated control valves
      • 0.023% fail on Condition
  • 7.9% fail on Body, chassis, structure (27% worse than other 2008 cars)
    • 5.9% fail on Transmission (120% worse than other 2008 cars)
      • 5.7% fail on Drive shafts (120% worse than other 2008 cars)
        • 5.6% fail on Joints (120% worse than other 2008 cars)
        • 0.045% fail on Drive shaft
        • 0.023% fail on Flexible couplings
      • 0.23% fail on Prop shafts
        • 0.23% fail on Joints (140% worse than other 2008 cars)
    • 0.74% fail on Fuel system (180% worse than other 2008 cars)
      • 0.29% fail on Fuel cap/sealing device
      • 0.23% fail on Pipe (4 times worse than other 2008 cars)
      • 0.14% fail on Hose (11 times worse than other 2008 cars)
      • 0.090% fail on Tank
    • 0.65% fail on Exhaust system (72% better than other 2008 cars)
    • 0.29% fail on Bumpers
    • 0.29% fail on Engine mounting (4 times worse than other 2008 cars)
      • 0.27% fail on Engine mounting condition (5 times worse than other 2008 cars)
      • 0.023% fail on Bracket
    • 0.29% fail on Doors
      • 0.18% fail on Driver's door
        • 0.18% fail on Door condition
      • 0.068% fail on Other passenger's door
        • 0.045% fail on Door condition
        • 0.023% fail on Hinge
      • 0.045% fail on Front passenger's door
        • 0.045% fail on Door condition
    • 0.090% fail on Body
      • 0.045% fail on Other body component
      • 0.023% fail on Body condition
      • 0.023% fail on Panel
    • 0.045% fail on Boot lid
      • 0.023% fail on Boot lid condition
      • 0.023% fail on Other boot lid component
    • 0.045% fail on Undertray
    • 0.023% fail on Integral vehicle structure
      • 0.023% fail on Integral vehicle structure condition
    • 0.023% fail on Seats
      • 0.023% fail on Driver's seat
  • 7.6% fail on Visibility (21% worse than other 2008 cars)
    • 5.3% fail on Washers (66% worse than other 2008 cars)
    • 2.1% fail on Wipers (28% better than other 2008 cars)
    • 0.36% fail on View to rear (100% worse than other 2008 cars)
      • 0.34% fail on Mirrors
      • 0.023% fail on Indirect vision devices
    • 0.34% fail on Bonnet
    • 0.090% fail on Condition of glass
      • 0.090% fail on Windscreen
  • 4.7% fail on Tyres (28% better than other 2008 cars)
    • 2.6% fail on Condition
    • 2.2% fail on Tread depth (39% better than other 2008 cars)
    • 0.090% fail on Size/type
  • 3.8% fail on Noise, emissions and leaks (30% better than other 2008 cars)
    • 3.7% fail on Exhaust emissions (29% better than other 2008 cars)
      • 1.9% fail on Compression ignition
        • 0.63% fail on On or after 01/07/2008
        • 0.63% fail on Malfunction indicator lamp
        • 0.61% fail on Pre 01/07/2008 Turbo
        • 0.045% fail on Emissions not tested
        • 0.023% fail on Pre 01/07/2008 Non turbo
      • 1.8% fail on Spark ignition (49% better than other 2008 cars)
        • 1.6% fail on Malfunction indicator lamp
        • 0.20% fail on Catalyst emissions (88% better than other 2008 cars)
        • 0.045% fail on Non catalyst emissions
        • 0.045% fail on Emissions not tested (92% better than other 2008 cars)
    • 0.068% fail on Fluid leaks (81% better than other 2008 cars)
      • 0.045% fail on Engine oil leaks (85% better than other 2008 cars)
      • 0.023% fail on Transmission oil leaks
    • 0.045% fail on Noise suppression
      • 0.045% fail on Undertray
  • 2.2% fail on Seat belts and supplementary restraint systems (42% worse than other 2008 cars)
    • 1.2% fail on SRS malfunction indicator lamp (56% worse than other 2008 cars)
    • 0.97% fail on Seat belts
      • 0.90% fail on Condition (110% worse than other 2008 cars)
      • 0.045% fail on Requirements
      • 0.045% fail on Pre-tensioners (12 times worse than other 2008 cars)
    • 0.045% fail on Airbags
      • 0.023% fail on Drivers airbag
      • 0.023% fail on Passengers airbag
  • 0.74% fail on Road Wheels
    • 0.72% fail on Attachment (80% worse than other 2008 cars)
    • 0.023% fail on Condition
  • 0.70% fail on Steering (74% better than other 2008 cars)
    • 0.45% fail on Steering linkage components (78% better than other 2008 cars)
      • 0.38% fail on Track rod end (79% better than other 2008 cars)
      • 0.090% fail on Ball joint
    • 0.20% fail on Steering gear
      • 0.20% fail on Steering rack
    • 0.068% fail on Steering play
      • 0.068% fail on Steering rack
    • 0.023% fail on Electronic power steering
  • 0.36% fail on Identification of the vehicle
    • 0.36% fail on Registration plates
  • 0.023% fail on Seat belt installation check
    • 0.023% fail on Anchorages
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