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MG MGB MOT Results

74.0% pass rate
from 17,721 tests in 2017
(11% better than other pre-1990 cars)
Number of tests by age
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 MG MGB is unusually good or bad.

  • 14% fail on Lamps, Reflectors and Electrical Equipment (16% better than other pre-1990 cars)
    • 3.0% fail on Headlamp aim (31% better than other pre-1990 cars)
    • 2.8% fail on Headlamps (17% better than other pre-1990 cars)
      • 2.3% fail on Headlamp (23% better than other pre-1990 cars)
      • 0.31% fail on Headlamp defects which don't require an aim check on retest
        • 0.31% fail on Main beam 'tell-tale'
      • 0.12% fail on Switch
      • 0.079% fail on Headlamp defects which do require an aim check on retest
        • 0.079% fail on Main beam 'tell-tale'
      • 0.040% fail on Dipswitch
      • 0.011% fail on Matched pair
    • 2.6% fail on Position lamps (26% better than other pre-1990 cars)
      • 1.7% fail on Front lamps (20% better than other pre-1990 cars)
      • 1.1% fail on Rear lamps (22% better than other pre-1990 cars)
      • 0.28% fail on All position lamps
      • 0.045% fail on Switch
    • 2.6% fail on Direction indicators (25% better than other pre-1990 cars)
      • 2.6% fail on Flashing type (25% better than other pre-1990 cars)
        • 1.3% fail on Individual lamps (24% better than other pre-1990 cars)
        • 1.1% fail on All direction indicators (30% worse than other pre-1990 cars)
        • 0.12% fail on Tell tales (54% better than other pre-1990 cars)
        • 0.090% fail on Switch
        • 0.023% fail on Side repeaters (97% better than other pre-1990 cars)
      • 0.0056% fail on Semaphore
        • 0.0056% fail on Switch
    • 2.5% fail on Stop lamp (15% better than other pre-1990 cars)
    • 2.4% fail on Registration plate lamp (12% better than other pre-1990 cars)
    • 2.3% fail on Horn
    • 0.86% fail on Hazard warning
      • 0.55% fail on Lamp
      • 0.29% fail on Switch
      • 0.090% fail on Tell tale
    • 0.66% fail on Battery (46% better than other pre-1990 cars)
    • 0.55% fail on Rear fog lamp (76% better than other pre-1990 cars)
      • 0.50% fail on Fog lamp (75% better than other pre-1990 cars)
      • 0.068% fail on Tell tale (84% better than other pre-1990 cars)
      • 0.011% fail on Switch (92% better than other pre-1990 cars)
    • 0.24% fail on Electrical wiring
    • 0.14% fail on Headlamp aim not tested
    • 0.0056% fail on Trailer electrical socket
  • 9.9% fail on Brakes (15% better than other pre-1990 cars)
    • 7.6% fail on Brake performance (9.9% better than other pre-1990 cars)
      • 4.4% fail on Rear wheels (16% worse than other pre-1990 cars)
      • 3.6% fail on Front wheels
      • 2.4% fail on Parking brake performance (29% better than other pre-1990 cars)
      • 0.63% fail on Service brake performance (57% better than other pre-1990 cars)
      • 0.60% fail on Brake imbalance
      • 0.18% fail on Brake performance not tested
      • 0.028% fail on Brake operation (78% better than other pre-1990 cars)
      • 0.011% fail on Parking brake operation
    • 2.1% fail on Hydraulic systems (38% better than other pre-1990 cars)
      • 1.6% fail on Components (40% better than other pre-1990 cars)
        • 0.89% fail on Hoses (23% better than other pre-1990 cars)
        • 0.58% fail on Pipes (58% better than other pre-1990 cars)
        • 0.10% fail on Cylinders
        • 0.034% fail on Reservoirs (72% better than other pre-1990 cars)
        • 0.034% fail on Servos
        • 0.011% fail on Valves (87% better than other pre-1990 cars)
      • 0.48% fail on Leaks
      • 0.16% fail on Operation
      • 0.0056% fail on Brake fluid warning lamp
    • 0.74% fail on Parking brake
      • 0.74% fail on Condition
    • 0.56% fail on Hub components (34% better than other pre-1990 cars)
      • 0.23% fail on Brake pads (37% better than other pre-1990 cars)
      • 0.17% fail on Brake calipers
      • 0.085% fail on Brake drums
      • 0.085% fail on Wheel cylinder
      • 0.0056% fail on Brake discs
    • 0.37% fail on Restricted movement
    • 0.23% fail on Prescribed areas
      • 0.18% fail on Master cylinder/servo mounting
      • 0.034% fail on Actuating linkage mounting
      • 0.023% fail on Park brake mechanism/associated mountings
    • 0.16% fail on Service brake control components (60% better than other pre-1990 cars)
      • 0.16% fail on Pedal (60% better than other pre-1990 cars)
        • 0.085% fail on Anti-slip (59% better than other pre-1990 cars)
        • 0.079% fail on Condition (58% better than other pre-1990 cars)
    • 0.14% fail on Mechanical components
      • 0.068% fail on Cable
      • 0.034% fail on Clevis joint (200% worse than other pre-1990 cars)
      • 0.017% fail on Lever
      • 0.011% fail on Pivot
      • 0.0056% fail on Linkage
      • 0.0056% fail on Stationary pin
    • 0.073% fail on Locking devices (120% worse than other pre-1990 cars)
    • 0.045% fail on Air and vacuum systems
      • 0.040% fail on Components
        • 0.040% fail on Servos
      • 0.0056% fail on Operation
  • 6.0% fail on Driver's view of the road (16% better than other pre-1990 cars)
    • 4.2% fail on Washers (12% better than other pre-1990 cars)
    • 2.2% fail on Wipers (22% better than other pre-1990 cars)
    • 0.11% fail on Mirrors (46% better than other pre-1990 cars)
    • 0.085% fail on Windscreen (55% better than other pre-1990 cars)
    • 0.079% fail on Bonnet
  • 5.7% fail on Suspension (42% better than other pre-1990 cars)
    • 2.3% fail on Prescribed areas (44% better than other pre-1990 cars)
      • 1.3% fail on Spring mounting (42% worse than other pre-1990 cars)
      • 1.0% fail on Component mounting (63% better than other pre-1990 cars)
      • 0.068% fail on Subframe mounting (89% better than other pre-1990 cars)
    • 1.0% fail on Wheel bearings (39% better than other pre-1990 cars)
      • 0.83% fail on Front (25% better than other pre-1990 cars)
      • 0.24% fail on Rear (64% better than other pre-1990 cars)
    • 0.99% fail on Shock absorbers
      • 0.99% fail on Condition
    • 0.55% fail on Anti-roll bars
      • 0.18% fail on Pins/bushes/ball joints
      • 0.17% fail on Linkage pins/bushes/ball joints (37% better than other pre-1990 cars)
      • 0.15% fail on Attachment
      • 0.045% fail on Linkage condition
      • 0.017% fail on Condition
      • 0.0056% fail on Presence
    • 0.48% fail on Suspension arms (62% better than other pre-1990 cars)
      • 0.41% fail on Pins/bushes/ball joints (65% better than other pre-1990 cars)
      • 0.056% fail on Attachment
      • 0.017% fail on Condition (76% better than other pre-1990 cars)
    • 0.41% fail on Leaf springs (55% worse than other pre-1990 cars)
      • 0.20% fail on Pins and bushes (79% worse than other pre-1990 cars)
        • 0.14% fail on Shackle
        • 0.068% fail on Anchor (150% worse than other pre-1990 cars)
      • 0.079% fail on Securing bolts
      • 0.062% fail on Condition
      • 0.040% fail on Anchor bracket
      • 0.017% fail on Spring saddle
      • 0.011% fail on Spring slippers (5 times worse than other pre-1990 cars)
      • 0.0056% fail on Spring eye
      • 0.0056% fail on Shackle bracket
    • 0.38% fail on Axles
      • 0.30% fail on King pins (120% worse than other pre-1990 cars)
      • 0.062% fail on Swivel joints/housing (56% better than other pre-1990 cars)
      • 0.011% fail on Axle beam
      • 0.0056% fail on Stub axle
      • 0.0056% fail on Clearance
    • 0.38% fail on Front suspension joints (60% better than other pre-1990 cars)
    • 0.18% fail on Coil springs (49% better than other pre-1990 cars)
      • 0.14% fail on Condition (46% better than other pre-1990 cars)
      • 0.040% fail on Location
    • 0.15% fail on Front suspension retaining and locking devices (92% worse than other pre-1990 cars)
    • 0.051% fail on Sub-frames (80% better than other pre-1990 cars)
      • 0.034% fail on Condition (70% better than other pre-1990 cars)
      • 0.017% fail on Attachment (81% better than other pre-1990 cars)
      • 0.0056% fail on Pins/bushes/ball joints
    • 0.034% fail on Tie bars/rods (79% better than other pre-1990 cars)
      • 0.028% fail on Pins/bushes/ball joints (76% better than other pre-1990 cars)
      • 0.0056% fail on Attachment
    • 0.023% fail on Bonded suspension
      • 0.017% fail on Attachment (3 times worse than other pre-1990 cars)
      • 0.0056% fail on Condition
    • 0.023% fail on Drive shafts (98% better than other pre-1990 cars)
      • 0.023% fail on Any drive shaft which is part of the suspension (80% better than other pre-1990 cars)
        • 0.023% fail on Universal joint
    • 0.017% fail on General condition
    • 0.011% fail on Torque/reaction arms
      • 0.0056% fail on Pins/bushes/ball joints
      • 0.0056% fail on Attachment
    • 0.0056% fail on Fluid suspension
      • 0.0056% fail on Suspension unit
    • 0.0056% fail on Trailing arms
      • 0.0056% fail on Pins/bushes/ball joints
    • 0.0056% fail on Radius arms
      • 0.0056% fail on Attachment
  • 5.2% fail on Exhaust, Fuel and Emissions (10% better than other pre-1990 cars)
    • 2.6% fail on Emissions
    • 1.5% fail on Fuel system
      • 0.83% fail on System (81% worse than other pre-1990 cars)
      • 0.29% fail on Pipe
      • 0.15% fail on Cap (50% better than other pre-1990 cars)
      • 0.12% fail on Hose
      • 0.10% fail on Tank
    • 1.3% fail on Exhaust system (46% better than other pre-1990 cars)
    • 0.18% fail on Emissions not tested
  • 3.6% fail on Steering (22% better than other pre-1990 cars)
    • 3.1% fail on Steering system (14% better than other pre-1990 cars)
      • 1.8% fail on Steering rack (44% worse than other pre-1990 cars)
      • 1.2% fail on Track rod end
      • 0.11% fail on Free play (50% better than other pre-1990 cars)
        • 0.11% fail on Steering rack
        • 0.0056% fail on Steering box
      • 0.040% fail on Steering arm (69% better than other pre-1990 cars)
      • 0.040% fail on Other components (72% better than other pre-1990 cars)
        • 0.034% fail on Steering pivot point (70% better than other pre-1990 cars)
        • 0.0056% fail on Steering component
      • 0.028% fail on Ball joint (90% better than other pre-1990 cars)
      • 0.0056% fail on Steering box
      • 0.0056% fail on Drag link end
    • 0.30% fail on Steering control
      • 0.16% fail on Steering wheel
      • 0.090% fail on Steering column (50% better than other pre-1990 cars)
      • 0.028% fail on Steering shaft
      • 0.028% fail on Steering coupling (74% better than other pre-1990 cars)
        • 0.028% fail on Universal joint
      • 0.0056% fail on Steering lock
    • 0.16% fail on Steering operation
    • 0.056% fail on Prescribed areas (59% better than other pre-1990 cars)
    • 0.034% fail on Locking devices (77% better than other pre-1990 cars)
    • 0.017% fail on Power steering (95% better than other pre-1990 cars)
      • 0.011% fail on Rams
      • 0.0056% fail on Operation
  • 2.1% fail on Body, Structure and General Items (41% better than other pre-1990 cars)
    • 0.59% fail on Vehicle structure (44% better than other pre-1990 cars)
      • 0.59% fail on Chassis (44% better than other pre-1990 cars)
    • 0.59% fail on Seats
      • 0.46% fail on Drivers
      • 0.21% fail on Passengers
    • 0.55% fail on Body condition (59% better than other pre-1990 cars)
    • 0.29% fail on Doors (50% better than other pre-1990 cars)
      • 0.17% fail on Passengers front (39% better than other pre-1990 cars)
      • 0.14% fail on Drivers
      • 0.011% fail on Passengers other (91% better than other pre-1990 cars)
    • 0.15% fail on Speedometer
    • 0.045% fail on Engine mountings
    • 0.023% fail on Load security
      • 0.017% fail on Bootlid
      • 0.0056% fail on Access panel
    • 0.011% fail on Body security
  • 1.6% fail on Seat Belts and Supplementary Restraint Systems (27% better than other pre-1990 cars)
    • 1.6% fail on Seat belts (27% better than other pre-1990 cars)
      • 0.96% fail on Prescribed areas (36% better than other pre-1990 cars)
      • 0.42% fail on Condition
      • 0.21% fail on Attachment
      • 0.023% fail on Requirements (85% better than other pre-1990 cars)
      • 0.0056% fail on Installation check
        • 0.0056% fail on Anchorage's
  • 1.3% fail on Tyres (40% better than other pre-1990 cars)
    • 0.79% fail on Condition (37% better than other pre-1990 cars)
    • 0.45% fail on Tread depth (51% better than other pre-1990 cars)
    • 0.10% fail on Size/type
    • 0.045% fail on Valve stem
  • 0.57% fail on Road Wheels (100% worse than other pre-1990 cars)
    • 0.45% fail on Attachment (88% worse than other pre-1990 cars)
    • 0.11% fail on Condition (160% worse than other pre-1990 cars)
    • 0.017% fail on Hubs (4 times worse than other pre-1990 cars)
    • 0.0056% fail on Halfshafts
  • 0.34% fail on Registration plates and VIN (58% better than other pre-1990 cars)
    • 0.30% fail on Registration plate (61% better than other pre-1990 cars)
    • 0.045% fail on Vehicle Identification Number
  • 0.017% fail on Towbars (92% better than other pre-1990 cars)
    • 0.011% fail on Vehicle structure (94% better than other pre-1990 cars)
    • 0.0056% fail on Towbar
Read the Honest John Review

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