smart forfour MOT Results

Registered in 2005
55.4% pass rate
from 798 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 2005 cars and highlighted areas where the smart forfour is unusually good or bad.

  • 19% fail on Lamps, reflectors and electrical equipment
    • 8.4% fail on Headlamps (62% worse than other 2005 cars)
      • 8.4% fail on Headlamp (69% worse than other 2005 cars)
    • 4.3% fail on Stop lamp
    • 3.9% fail on Direction indicators
      • 3.9% fail on Flashing type
        • 1.9% fail on Individual direction indicators
        • 1.8% fail on Side repeaters (120% worse than other 2005 cars)
        • 0.25% fail on All direction indicators
    • 3.3% fail on Registration plate lamp(s)
    • 3.0% fail on Headlamp aim
      • 2.1% fail on Headlamp aim
      • 0.88% fail on Headlamp aim not tested
    • 1.5% fail on Electrical equipment (140% worse than other 2005 cars)
      • 0.88% fail on Horn (200% worse than other 2005 cars)
      • 0.75% fail on Battery(ies)
    • 0.63% fail on Front and rear fog lamps
      • 0.63% fail on Rear fog lamp
        • 0.63% fail on Rear fog lamp
    • 0.25% fail on Position lamps
      • 0.25% fail on Position lamp
    • 0.25% fail on Hazard warning
      • 0.25% fail on Switch
    • 0.13% fail on Rear reflectors
  • 13% fail on Brakes
    • 9.1% fail on Brake performance
      • 5.0% fail on Parking brake efficiency (sp)
        • 5.0% fail on Rbt (sp)
      • 3.9% fail on Service brake performance
        • 3.9% fail on Rbt
          • 3.0% fail on Service brake performance
          • 1.0% fail on Service brake imbalance
      • 2.6% fail on Parking brake performance
        • 2.4% fail on Rbt
          • 1.8% fail on Parking brake performance
          • 0.63% fail on Parking (secondary brake performance) (3 times worse than other 2005 cars)
        • 0.25% fail on Decelerometer (9 times worse than other 2005 cars)
          • 0.25% fail on Parking brake efficiency (Trikes, quads and pre-68 vehicles) (16 times worse than other 2005 cars)
      • 0.75% fail on Service Brake Efficiency (sp)
        • 0.75% fail on Rbt (sp)
          • 0.63% fail on Service brake imbalance
          • 0.13% fail on Service brake performance
      • 0.13% fail on Brake performance not tested
    • 4.5% fail on Mechanical brake components
      • 3.6% fail on Brake linings and pads (74% worse than other 2005 cars)
        • 3.6% fail on Brake pads (75% worse than other 2005 cars)
      • 1.5% fail on Brake discs and drums
        • 1.5% fail on Brake discs
      • 0.13% fail on Brake cables, rods, levers and linkages
        • 0.13% fail on Cable
    • 1.1% fail on ABS / EBS / ESC
      • 1.0% fail on Anti-lock braking system
      • 0.13% fail on Electronic braking system
    • 0.50% fail on Service brake pedal or hand lever
      • 0.38% fail on Hand lever
      • 0.13% fail on Pedal
    • 0.38% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.38% fail on Hydraulic brake callipers
    • 0.25% fail on Parking brake control
      • 0.25% fail on Lever
    • 0.25% fail on Hydraulic systems
      • 0.25% fail on Reservoirs (8 times worse than other 2005 cars)
    • 0.13% fail on Other components and prescribed areas
      • 0.13% fail on Other components
  • 11% fail on Suspension (39% better than other 2005 cars)
    • 3.4% fail on Anti-roll bars
      • 1.6% fail on Linkage ball joints
      • 0.88% fail on Ball joint dust cover
      • 0.75% fail on Ball joint
      • 0.25% fail on Linkage
      • 0.25% fail on Linkage pins and bushes
    • 3.0% fail on Springs
      • 3.0% fail on Coil springs
        • 3.0% fail on Coil spring
    • 3.0% fail on Suspension arms (49% better than other 2005 cars)
      • 1.5% fail on Ball joint dust cover
      • 0.88% fail on Ball joint (63% better than other 2005 cars)
      • 0.63% fail on Pins and bushes (76% better than other 2005 cars)
    • 1.9% fail on Wheel bearings
    • 0.50% fail on Shock absorbers
    • 0.13% fail on Component mounting prescribed areas
  • 8.5% fail on Body, chassis, structure
    • 4.0% fail on Doors (6 times worse than other 2005 cars)
      • 1.5% fail on Driver's door (11 times worse than other 2005 cars)
        • 1.5% fail on Door condition (12 times worse than other 2005 cars)
      • 1.5% fail on Front passenger's door (7 times worse than other 2005 cars)
        • 1.5% fail on Door condition (7 times worse than other 2005 cars)
      • 1.5% fail on Other passenger's door (5 times worse than other 2005 cars)
        • 1.4% fail on Door condition (4 times worse than other 2005 cars)
        • 0.13% fail on Catch
    • 2.1% fail on Transmission
      • 2.1% fail on Drive shafts
        • 2.1% fail on Joints
    • 1.8% fail on Exhaust system
    • 0.63% fail on Fuel system
      • 0.63% fail on Fuel cap/sealing device
    • 0.38% fail on Body
      • 0.25% fail on Panel
      • 0.13% fail on Other body component
    • 0.25% fail on Boot lid (4 times worse than other 2005 cars)
      • 0.25% fail on Boot lid condition (5 times worse than other 2005 cars)
  • 8.4% fail on Visibility
    • 5.9% fail on Wipers (56% worse than other 2005 cars)
    • 3.5% fail on Washers
    • 0.25% fail on Condition of glass
      • 0.25% fail on Windscreen
    • 0.25% fail on View to rear
      • 0.25% fail on Mirrors
  • 5.5% fail on Tyres
    • 3.3% fail on Tread depth
    • 2.4% fail on Condition
    • 0.50% fail on Size/type
  • 4.0% fail on Steering
    • 3.6% fail on Steering linkage components
      • 3.6% fail on Track rod end
    • 0.25% fail on Power steering
      • 0.25% fail on Operation
    • 0.13% fail on Steering gear
      • 0.13% fail on Steering rack
    • 0.13% fail on Electronic power steering
  • 4.0% fail on Noise, emissions and leaks (41% better than other 2005 cars)
    • 3.8% fail on Exhaust emissions (41% better than other 2005 cars)
      • 3.4% fail on Spark ignition
        • 2.1% fail on Catalyst emissions
        • 1.0% fail on Malfunction indicator lamp (63% better than other 2005 cars)
        • 0.63% fail on Emissions not tested
      • 0.50% fail on Compression ignition
        • 0.25% fail on Pre 01/07/2008 Turbo
        • 0.13% fail on Pre 01/07/2008 Non turbo
        • 0.13% fail on Malfunction indicator lamp
    • 0.25% fail on Fluid leaks
      • 0.25% fail on Engine oil leaks
    • 0.13% fail on Noise suppression
      • 0.13% fail on Undertray
  • 1.9% fail on Seat belts and supplementary restraint systems
    • 1.4% fail on SRS malfunction indicator lamp
    • 0.50% fail on Seat belts
      • 0.25% fail on Prescribed areas
      • 0.13% fail on Attachment
      • 0.13% fail on Condition
  • 0.75% fail on Identification of the vehicle
    • 0.75% fail on Registration plates
  • 0.75% fail on Road Wheels
    • 0.50% fail on Condition (3 times worse than other 2005 cars)
    • 0.25% fail on Attachment
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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