MG MGB MOT Results

Registered in 1980
68.8% pass rate
from 651 tests in 2020
(18% worse than other 1980 cars)
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 1980 cars and highlighted areas where the MG MGB is unusually good or bad.

  • 14% fail on Lamps, reflectors and electrical equipment
    • 3.4% fail on Front and rear fog lamps
      • 3.4% fail on Rear fog lamp
        • 3.4% fail on Rear fog lamp
    • 3.2% fail on Headlamp aim
      • 2.9% fail on Headlamp aim
      • 0.31% fail on Headlamp aim not tested
    • 2.6% fail on Electrical equipment
      • 1.2% fail on Battery(ies)
      • 1.2% fail on Horn
      • 0.15% fail on Electrical wiring
    • 2.3% fail on Stop lamp
    • 2.0% fail on Headlamps
      • 2.0% fail on Headlamp
    • 2.0% fail on Position lamps
      • 1.1% fail on Position lamp
      • 0.77% fail on All position lamps (3 times worse than other 1980 cars)
      • 0.15% fail on Switch
    • 1.8% fail on Direction indicators
      • 1.8% fail on Flashing type
        • 1.2% fail on Individual direction indicators
        • 0.61% fail on All direction indicators
        • 0.15% fail on Switch
    • 1.4% fail on Registration plate lamp(s)
    • 0.77% fail on Mandatory tell-tales
      • 0.77% fail on Rear fog lamp tell-tale
  • 9.8% fail on Noise, emissions and leaks (45% worse than other 1980 cars)
    • 9.5% fail on Exhaust emissions (50% worse than other 1980 cars)
      • 9.5% fail on Spark ignition (55% worse than other 1980 cars)
        • 8.9% fail on Non catalyst emissions (61% worse than other 1980 cars)
        • 0.77% fail on Emissions not tested
        • 0.15% fail on Catalyst emissions
    • 0.46% fail on Fluid leaks
      • 0.31% fail on Engine oil leaks
      • 0.15% fail on Other leaks
    • 0.15% fail on Noise suppression
      • 0.15% fail on Sound deadening material
  • 8.1% fail on Visibility
    • 6.0% fail on Washers
    • 2.8% fail on Wipers
    • 0.15% fail on View to rear
      • 0.15% fail on Mirrors
  • 7.8% fail on Brakes
    • 6.1% fail on Brake performance
      • 3.1% fail on Service brake performance
        • 2.9% fail on Rbt
          • 2.0% fail on Service brake performance
          • 0.92% fail on Service brake imbalance
        • 0.15% fail on Decelerometer
          • 0.15% fail on Service brake performance
        • 0.15% fail on Plate brake tester
          • 0.15% fail on Service brake efficiency (Trikes, quads and pre-68 vehicles)
      • 3.1% fail on Service Brake Efficiency (sp)
        • 3.1% fail on Rbt (sp)
          • 2.5% fail on Service brake imbalance
          • 0.92% fail on Service brake performance
      • 1.8% fail on Parking brake efficiency (sp)
        • 1.8% fail on Rbt (sp)
      • 1.1% fail on Parking brake performance
        • 1.1% fail on Rbt
          • 0.61% fail on Parking brake performance
          • 0.46% fail on Parking (secondary brake performance)
      • 0.31% fail on Brake performance not tested
    • 0.61% fail on Mechanical brake components
      • 0.46% fail on Brake linings and pads
        • 0.46% fail on Brake pads
      • 0.15% fail on Brake cables, rods, levers and linkages
        • 0.15% fail on Cable
    • 0.46% fail on Service brake pedal or hand lever
      • 0.31% fail on Pedal
      • 0.15% fail on Hand lever
    • 0.46% fail on Parking brake control
      • 0.46% fail on Lever
    • 0.46% fail on Hydraulic systems
      • 0.31% fail on Brake fluid
      • 0.15% fail on Reservoirs
    • 0.46% fail on Rigid brake pipes
    • 0.46% fail on Flexible brake hoses
    • 0.15% fail on Air and vacuum systems
      • 0.15% fail on Servos
    • 0.15% fail on Brake actuators (including spring brakes or hydraulic cylinders)
      • 0.15% fail on Hydraulic brake cylinder
    • 0.15% fail on Other components and prescribed areas
      • 0.15% fail on Other components
  • 5.2% fail on Suspension
    • 1.4% fail on Component mounting prescribed areas
    • 1.2% fail on Wheel bearings
    • 1.1% fail on Springs
      • 0.77% fail on Leaf springs
        • 0.31% fail on Shackle pins and bushes
        • 0.15% fail on Leaf spring
        • 0.15% fail on Anchor bracket
        • 0.15% fail on Spring saddle
      • 0.31% fail on Spring mounting prescribed areas
    • 0.77% fail on Shock absorbers
    • 0.61% fail on Suspension arms
      • 0.31% fail on Pins and bushes
      • 0.15% fail on Suspension arm
      • 0.15% fail on Attachment bracket and mounting
    • 0.46% fail on Anti-roll bars
      • 0.15% fail on Pins and bushes
      • 0.15% fail on Linkage pins and bushes
      • 0.15% fail on Linkage ball joint dust cover
    • 0.31% fail on Other suspension component
      • 0.15% fail on Other suspension component
      • 0.15% fail on Pins and bushes
    • 0.15% fail on Axles
      • 0.15% fail on Stub axle
    • 0.15% fail on Sub-frames
      • 0.15% fail on Sub-frame mounting prescribed areas
    • 0.15% fail on Air/gas/fluid suspension
      • 0.15% fail on Suspension unit
  • 4.9% fail on Body, chassis, structure
    • 1.2% fail on Integral vehicle structure
      • 1.2% fail on Integral vehicle structure condition
    • 1.2% fail on Exhaust system
    • 1.2% fail on Fuel system
      • 0.61% fail on Pipe
      • 0.31% fail on Fuel cap/sealing device
      • 0.15% fail on Hose
      • 0.15% fail on System
    • 0.46% fail on Body
      • 0.46% fail on Panel (4 times worse than other 1980 cars)
    • 0.46% fail on Doors
      • 0.31% fail on Front passenger's door
        • 0.31% fail on Door condition
      • 0.15% fail on Driver's door
        • 0.15% fail on Door condition
    • 0.31% fail on Chassis
      • 0.31% fail on Chassis condition
    • 0.31% fail on Transmission
      • 0.31% fail on Prop shafts
        • 0.15% fail on Prop shaft
        • 0.15% fail on Joints
    • 0.31% fail on Floor
    • 0.31% fail on Seats
      • 0.15% fail on Driver's seat
      • 0.15% fail on Passenger's seat
    • 0.15% fail on Towbar
      • 0.15% fail on Towbar condition
    • 0.15% fail on Boot lid
      • 0.15% fail on Boot lid condition
  • 3.5% fail on Steering
    • 1.8% fail on Steering gear
      • 1.8% fail on Steering rack
    • 0.92% fail on Steering linkage components
      • 0.77% fail on Track rod end
      • 0.15% fail on Locking devices
    • 0.61% fail on Steering wheel
    • 0.15% fail on Prescribed areas
  • 1.4% fail on Seat belts and supplementary restraint systems
    • 1.4% fail on Seat belts
      • 0.77% fail on Condition
      • 0.61% fail on Prescribed areas
  • 0.61% fail on Tyres
    • 0.46% fail on Condition
    • 0.15% fail on Tread depth
  • 0.31% fail on Identification of the vehicle
    • 0.31% fail on Registration plates
  • 0.31% fail on Road Wheels
    • 0.31% fail on Attachment
  • 0.15% fail on Speedometer and speed limiter
    • 0.15% fail on Speedometer

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