smart forfour MOT Results

Registered in 2006
57.2% pass rate
from 1,097 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 2006 cars and highlighted areas where the smart forfour is unusually good or bad.

  • 22% fail on Lamps, reflectors and electrical equipment (23% worse than other 2006 cars)
    • 7.1% fail on Headlamps (57% worse than other 2006 cars)
      • 7.1% fail on Headlamp (63% worse than other 2006 cars)
    • 5.7% fail on Stop lamp
    • 4.2% fail on Registration plate lamp(s) (58% worse than other 2006 cars)
    • 3.9% fail on Headlamp aim
      • 3.0% fail on Headlamp aim
      • 0.91% fail on Headlamp aim not tested (150% worse than other 2006 cars)
    • 3.8% fail on Position lamps
      • 3.8% fail on Position lamp
    • 2.0% fail on Direction indicators
      • 2.0% fail on Flashing type
        • 1.0% fail on Individual direction indicators
        • 0.73% fail on Side repeaters
        • 0.27% fail on All direction indicators
    • 1.5% fail on Electrical equipment (120% worse than other 2006 cars)
      • 1.0% fail on Horn (160% worse than other 2006 cars)
      • 0.55% fail on Battery(ies)
    • 0.55% fail on Front and rear fog lamps
      • 0.55% fail on Rear fog lamp
        • 0.55% fail on Rear fog lamp
        • 0.091% fail on Switch
    • 0.18% fail on Hazard warning
      • 0.18% fail on Switch
    • 0.18% fail on Rear reflectors
    • 0.091% fail on Mandatory tell-tales
      • 0.091% fail on Main beam tell-tale
      • 0.091% fail on Rear fog lamp tell-tale
  • 10% fail on Suspension (36% better than other 2006 cars)
    • 3.4% fail on Anti-roll bars (36% better than other 2006 cars)
      • 2.0% fail on Linkage ball joints
      • 0.55% fail on Linkage
      • 0.55% fail on Linkage ball joint dust cover (69% better than other 2006 cars)
      • 0.18% fail on Ball joint
      • 0.091% fail on Ball joint dust cover
    • 2.7% fail on Wheel bearings (130% worse than other 2006 cars)
    • 2.4% fail on Springs (45% better than other 2006 cars)
      • 2.4% fail on Coil springs (45% better than other 2006 cars)
        • 2.3% fail on Coil spring (47% better than other 2006 cars)
        • 0.091% fail on Mounting
    • 1.6% fail on Suspension arms (70% better than other 2006 cars)
      • 0.64% fail on Pins and bushes (76% better than other 2006 cars)
      • 0.55% fail on Ball joint (75% better than other 2006 cars)
      • 0.36% fail on Ball joint dust cover
      • 0.091% fail on Suspension arm
    • 0.82% fail on Shock absorbers
    • 0.091% fail on Suspension rods
      • 0.091% fail on Ball joint
    • 0.091% fail on Other suspension component
      • 0.091% fail on Ball joint dust cover
  • 9.5% fail on Brakes (22% better than other 2006 cars)
    • 5.2% fail on Brake performance
      • 3.6% fail on Parking brake efficiency (sp)
        • 3.6% fail on Rbt (sp)
      • 2.0% fail on Parking brake performance
        • 2.0% fail on Rbt
          • 1.6% fail on Parking brake performance
          • 0.36% fail on Parking (secondary brake performance)
      • 1.5% fail on Service brake performance
        • 1.4% fail on Rbt
          • 1.0% fail on Service brake performance (52% better than other 2006 cars)
          • 0.36% fail on Service brake imbalance
        • 0.091% fail on Decelerometer
          • 0.091% fail on Service brake performance
      • 0.91% fail on Service Brake Efficiency (sp)
        • 0.91% fail on Rbt (sp)
          • 0.73% fail on Service brake imbalance
          • 0.27% fail on Service brake performance
    • 4.0% fail on Mechanical brake components
      • 3.2% fail on Brake linings and pads
        • 3.2% fail on Brake pads
      • 1.1% fail on Brake discs and drums
        • 1.1% fail on Brake discs
      • 0.091% fail on Brake cables, rods, levers and linkages
        • 0.091% fail on Lever
    • 1.0% fail on ABS / EBS / ESC
      • 1.0% fail on Anti-lock braking system
      • 0.091% fail on Electronic stability control
    • 0.46% fail on Service brake pedal or hand lever
      • 0.36% fail on Hand lever
      • 0.091% fail on Pedal
    • 0.46% fail on Parking brake control
      • 0.46% fail on Lever
    • 0.091% fail on Hydraulic systems
      • 0.091% fail on Brake fluid
    • 0.091% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.091% fail on Hydraulic brake callipers
  • 8.8% fail on Visibility
    • 5.9% fail on Wipers (81% worse than other 2006 cars)
    • 2.5% fail on Washers
    • 0.27% fail on Driver's view
    • 0.18% fail on Condition of glass
      • 0.18% fail on Windscreen
    • 0.091% fail on View to rear
      • 0.091% fail on Mirrors
  • 5.3% fail on Tyres (29% better than other 2006 cars)
    • 3.2% fail on Tread depth
    • 2.2% fail on Condition
    • 0.18% fail on Size/type
  • 4.8% fail on Noise, emissions and leaks
    • 4.5% fail on Exhaust emissions
      • 3.9% fail on Spark ignition
        • 1.8% fail on Malfunction indicator lamp
        • 1.6% fail on Catalyst emissions
        • 0.82% fail on Emissions not tested
        • 0.091% fail on Emission control equipment
          • 0.091% fail on Catalytic converter
      • 0.55% fail on Compression ignition (67% better than other 2006 cars)
        • 0.36% fail on Pre 01/07/2008 Turbo
        • 0.18% fail on Malfunction indicator lamp
        • 0.091% fail on Emissions not tested
    • 0.18% fail on Noise suppression
      • 0.18% fail on Undertray (6 times worse than other 2006 cars)
    • 0.18% fail on Fluid leaks
      • 0.091% fail on Engine oil leaks
      • 0.091% fail on Transmission oil leaks
  • 4.4% fail on Body, chassis, structure (41% better than other 2006 cars)
    • 1.5% fail on Exhaust system (46% better than other 2006 cars)
    • 1.4% fail on Doors (2 times worse than other 2006 cars)
      • 0.55% fail on Driver's door (5 times worse than other 2006 cars)
        • 0.55% fail on Door condition (6 times worse than other 2006 cars)
      • 0.46% fail on Other passenger's door
        • 0.46% fail on Door condition
      • 0.36% fail on Front passenger's door
        • 0.36% fail on Door condition
    • 0.73% fail on Transmission (78% better than other 2006 cars)
      • 0.73% fail on Drive shafts (77% better than other 2006 cars)
        • 0.73% fail on Joints (76% better than other 2006 cars)
    • 0.27% fail on Fuel system
      • 0.27% fail on Fuel cap/sealing device
    • 0.18% fail on Bumpers
    • 0.18% fail on Body
      • 0.18% fail on Other body component
    • 0.091% fail on Chassis
      • 0.091% fail on Chassis condition
    • 0.091% fail on Seats
      • 0.091% fail on Driver's seat
    • 0.091% fail on Undertray
  • 2.7% fail on Steering
    • 2.6% fail on Steering linkage components
      • 2.5% fail on Track rod end
      • 0.091% fail on Ball joint
    • 0.091% fail on Steering gear
      • 0.091% fail on Steering rack
    • 0.091% fail on Steering wheel
  • 1.4% fail on Seat belts and supplementary restraint systems
    • 0.82% fail on SRS malfunction indicator lamp
    • 0.55% fail on Seat belts
      • 0.36% fail on Condition
      • 0.091% fail on Prescribed areas
      • 0.091% fail on Attachment
  • 0.73% fail on Identification of the vehicle
    • 0.73% fail on Registration plates
  • 0.64% fail on Road Wheels
    • 0.46% fail on Attachment
    • 0.18% fail on Condition
  • 0.091% fail on Speedometer and speed limiter
    • 0.091% fail on Speedometer
Read the Honest John Review

  • Smart Forfour (2004 - 2006)
    Funky-looking, versatile hatch with plenty of safety kit. Manual versions drive well. Four stars for the diesels, by far the best in the line-up.

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