Mercedes-Benz B-Class MOT Results

Registered in 2014
87.9% pass rate
from 1,466 tests in 2017
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 2014 cars and highlighted areas where the Mercedes-Benz B-Class is unusually good or bad.

  • 5.3% fail on Lamps, Reflectors and Electrical Equipment
    • 2.7% fail on Registration plate lamp (2 times worse than other 2014 cars)
    • 1.5% fail on Headlamp aim
    • 0.89% fail on Headlamps
      • 0.48% fail on Headlamp
      • 0.34% fail on Headlamp defects which don't require an aim check on retest (4 times worse than other 2014 cars)
        • 0.34% fail on Headlamp cleaning device (5 times worse than other 2014 cars)
      • 0.068% fail on Headlamp defects which do require an aim check on retest
        • 0.068% fail on Headlamp cleaning device
    • 0.75% fail on Stop lamp
    • 0.068% fail on Battery
    • 0.068% fail on Direction indicators
      • 0.068% fail on Flashing type
        • 0.068% fail on Side repeaters
  • 4.8% fail on Tyres
    • 3.3% fail on Condition (52% worse than other 2014 cars)
    • 1.2% fail on Tread depth
    • 0.61% fail on Tyre pressure monitoring system
    • 0.068% fail on Valve stem
  • 1.8% fail on Driver's view of the road (46% better than other 2014 cars)
    • 0.61% fail on Washers
    • 0.55% fail on Windscreen
    • 0.55% fail on Wipers (74% better than other 2014 cars)
    • 0.14% fail on Mirrors
  • 0.95% fail on Brakes (56% better than other 2014 cars)
    • 0.61% fail on Hub components (58% better than other 2014 cars)
      • 0.55% fail on Brake pads (60% better than other 2014 cars)
      • 0.20% fail on Brake discs
    • 0.20% fail on Hydraulic systems
      • 0.20% fail on Components
        • 0.14% fail on Hoses
        • 0.068% fail on Pipes
    • 0.14% fail on Brake performance
      • 0.068% fail on Brake imbalance
      • 0.068% fail on Front wheels
    • 0.068% fail on Electronic stability system
  • 0.75% fail on Seat Belts and Supplementary Restraint Systems (180% worse than other 2014 cars)
    • 0.48% fail on Supplementary restraint systems (3 times worse than other 2014 cars)
      • 0.34% fail on SRS Malfunction Indicator Lamp (2 times worse than other 2014 cars)
      • 0.14% fail on Passengers airbag (76 times worse than other 2014 cars)
    • 0.27% fail on Seat belts
      • 0.27% fail on Condition
  • 0.41% fail on Road Wheels (2 times worse than other 2014 cars)
    • 0.34% fail on Condition (5 times worse than other 2014 cars)
    • 0.068% fail on Attachment
  • 0.20% fail on Registration plates and VIN
    • 0.20% fail on Registration plate
  • 0.068% fail on Suspension
    • 0.068% fail on Suspension arms
      • 0.068% fail on Pins/bushes/ball joints
  • 0.068% fail on Body, Structure and General Items
    • 0.068% fail on Body condition
  • 0.068% fail on Exhaust, Fuel and Emissions
    • 0.068% fail on Fuel system
      • 0.068% fail on Cap
Read the Honest John Review

  • Mercedes-Benz B-Class (2012 - 2018)
    Loads of cabin space front and rear. Lots of safety kit. Engines are all frugal and even the most powerful deliver low CO2 emissions. All electric B Class from Spring 2015.

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