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Mercedes-Benz CLA MOT Results

67.0% pass rate
from 203 tests in 2020
(24% worse than other pre-1990 cars)
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 pre-1990 cars and highlighted areas where the Mercedes-Benz CLA is unusually good or bad.

  • 20% fail on Lamps, reflectors and electrical equipment (58% worse than other pre-1990 cars)
    • 6.9% fail on Front and rear fog lamps (180% worse than other pre-1990 cars)
      • 6.9% fail on Rear fog lamp (180% worse than other pre-1990 cars)
        • 5.9% fail on Rear fog lamp (150% worse than other pre-1990 cars)
        • 2.0% fail on Switch (7 times worse than other pre-1990 cars)
    • 6.4% fail on Headlamp aim (90% worse than other pre-1990 cars)
      • 6.4% fail on Headlamp aim (100% worse than other pre-1990 cars)
    • 3.9% fail on Direction indicators (48% worse than other pre-1990 cars)
      • 3.9% fail on Flashing type (48% worse than other pre-1990 cars)
        • 3.4% fail on Individual direction indicators (120% worse than other pre-1990 cars)
        • 0.49% fail on Side repeaters
    • 3.9% fail on Registration plate lamp(s) (2 times worse than other pre-1990 cars)
    • 3.4% fail on Stop lamp (34% worse than other pre-1990 cars)
    • 3.0% fail on Headlamps (1.5% worse than other pre-1990 cars)
      • 3.0% fail on Headlamp (6.0% worse than other pre-1990 cars)
    • 2.0% fail on Electrical equipment (10% better than other pre-1990 cars)
      • 0.99% fail on Horn (37% better than other pre-1990 cars)
      • 0.49% fail on Electrical wiring
      • 0.49% fail on Battery(ies)
    • 1.5% fail on Mandatory tell-tales (3 times worse than other pre-1990 cars)
      • 1.5% fail on Rear fog lamp tell-tale (4 times worse than other pre-1990 cars)
    • 0.99% fail on Rear reflectors (9 times worse than other pre-1990 cars)
  • 17% fail on Brakes (87% worse than other pre-1990 cars)
    • 13% fail on Brake performance (91% worse than other pre-1990 cars)
      • 8.9% fail on Service brake performance (190% worse than other pre-1990 cars)
        • 8.4% fail on Rbt (180% worse than other pre-1990 cars)
          • 4.9% fail on Service brake performance (100% worse than other pre-1990 cars)
          • 3.9% fail on Service brake imbalance (4 times worse than other pre-1990 cars)
        • 0.49% fail on Decelerometer
          • 0.49% fail on Service brake performance
      • 7.4% fail on Service Brake Efficiency (sp) (140% worse than other pre-1990 cars)
        • 7.4% fail on Rbt (sp) (150% worse than other pre-1990 cars)
          • 5.4% fail on Service brake imbalance (160% worse than other pre-1990 cars)
          • 4.4% fail on Service brake performance (2 times worse than other pre-1990 cars)
      • 3.9% fail on Parking brake efficiency (sp) (39% worse than other pre-1990 cars)
        • 3.9% fail on Rbt (sp) (52% worse than other pre-1990 cars)
      • 2.0% fail on Parking brake performance (73% worse than other pre-1990 cars)
        • 2.0% fail on Rbt (79% worse than other pre-1990 cars)
          • 1.5% fail on Parking brake performance (84% worse than other pre-1990 cars)
          • 0.49% fail on Parking (secondary brake performance)
      • 0.49% fail on Brake performance not tested
    • 2.0% fail on Hydraulic systems (6 times worse than other pre-1990 cars)
      • 0.99% fail on Brake fluid (7 times worse than other pre-1990 cars)
      • 0.49% fail on Reservoirs
      • 0.49% fail on Valves
    • 1.5% fail on Rigid brake pipes (30% worse than other pre-1990 cars)
    • 1.5% fail on Other components and prescribed areas (5 times worse than other pre-1990 cars)
      • 1.5% fail on Prescribed areas (7 times worse than other pre-1990 cars)
        • 1.5% fail on Master cylinder/servo mounting (10 times worse than other pre-1990 cars)
    • 0.99% fail on Flexible brake hoses (150% worse than other pre-1990 cars)
    • 0.99% fail on Mechanical brake components (6.5% worse than other pre-1990 cars)
      • 0.49% fail on Brake discs and drums
        • 0.49% fail on Brake discs
      • 0.49% fail on Brake cables, rods, levers and linkages
        • 0.49% fail on Cable
    • 0.49% fail on Air and vacuum systems
      • 0.49% fail on Leaks
    • 0.49% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.49% fail on Hydraulic brake callipers
    • 0.49% fail on Load sensing valves
    • 0.49% fail on ABS / EBS / ESC
      • 0.49% fail on Anti-lock braking system
  • 8.9% fail on Steering (140% worse than other pre-1990 cars)
    • 8.4% fail on Steering linkage components (3 times worse than other pre-1990 cars)
      • 4.4% fail on Drag link end (13 times worse than other pre-1990 cars)
      • 4.4% fail on Track rod end (2 times worse than other pre-1990 cars)
      • 1.5% fail on Ball joint (3 times worse than other pre-1990 cars)
      • 0.49% fail on Locking devices
    • 0.49% fail on Power steering
      • 0.49% fail on Operation
  • 8.4% fail on Body, chassis, structure (26% worse than other pre-1990 cars)
    • 2.0% fail on Chassis (97% worse than other pre-1990 cars)
      • 2.0% fail on Chassis condition (99% worse than other pre-1990 cars)
    • 1.5% fail on Integral vehicle structure (45% worse than other pre-1990 cars)
      • 1.5% fail on Integral vehicle structure condition (47% worse than other pre-1990 cars)
    • 1.5% fail on Doors (2 times worse than other pre-1990 cars)
      • 0.99% fail on Front passenger's door (3 times worse than other pre-1990 cars)
        • 0.99% fail on Door condition (3 times worse than other pre-1990 cars)
      • 0.49% fail on Driver's door
        • 0.49% fail on Door condition
    • 0.99% fail on Exhaust system (51% better than other pre-1990 cars)
    • 0.99% fail on Fuel system (29% worse than other pre-1990 cars)
      • 0.49% fail on Hose
      • 0.49% fail on System
    • 0.99% fail on Transmission (26% better than other pre-1990 cars)
      • 0.99% fail on Prop shafts (2 times worse than other pre-1990 cars)
        • 0.99% fail on Joints (4 times worse than other pre-1990 cars)
    • 0.49% fail on Floor
    • 0.49% fail on Seats
      • 0.49% fail on Driver's seat
    • 0.49% fail on Cabs
      • 0.49% fail on Steps
  • 5.9% fail on Visibility (5.4% better than other pre-1990 cars)
    • 3.9% fail on Washers (5.9% better than other pre-1990 cars)
    • 2.5% fail on Wipers (1.3% worse than other pre-1990 cars)
    • 0.99% fail on View to rear (4 times worse than other pre-1990 cars)
      • 0.99% fail on Mirrors (4 times worse than other pre-1990 cars)
    • 0.49% fail on Bonnet
  • 5.4% fail on Suspension (31% better than other pre-1990 cars)
    • 2.0% fail on Component mounting prescribed areas (33% better than other pre-1990 cars)
    • 0.99% fail on Wheel bearings (30% better than other pre-1990 cars)
    • 0.99% fail on Anti-roll bars (53% worse than other pre-1990 cars)
      • 0.49% fail on Anti-roll bar
      • 0.49% fail on Pins and bushes
    • 0.49% fail on Springs
      • 0.49% fail on Leaf springs
        • 0.49% fail on Anchor bracket
    • 0.49% fail on Shock absorbers
    • 0.49% fail on Other suspension component
      • 0.49% fail on Pins and bushes
  • 3.0% fail on Seat belts and supplementary restraint systems (81% worse than other pre-1990 cars)
    • 3.0% fail on Seat belts (81% worse than other pre-1990 cars)
      • 1.5% fail on Condition (2 times worse than other pre-1990 cars)
      • 0.99% fail on Prescribed areas (6.0% better than other pre-1990 cars)
      • 0.49% fail on Requirements
  • 2.5% fail on Tyres (77% worse than other pre-1990 cars)
    • 2.5% fail on Condition (2 times worse than other pre-1990 cars)
  • 0.49% fail on Identification of the vehicle
    • 0.49% fail on Registration plates
  • 0.49% fail on Speedometer and speed limiter
    • 0.49% fail on Speedometer
  • 0.49% fail on Noise, emissions and leaks
    • 0.49% fail on Exhaust emissions
      • 0.49% fail on Compression ignition
        • 0.49% fail on Emissions not tested