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MOT History from tests of petrol MG B ROADSTERs year 1978

Review the list of common MG B ROADSTER failures below or to perform a specific mot history check on your MG then use our popular KnowYourCar service

mot history
Pass percent:64.15%
(The average a petrol MG B ROADSTER year 1978 passes without issue)
Based on:212 MOT Tests
Most common failuresNo# failures
Exhaust emissions carbon monoxide content excessive |7.3.B.1a|14
Headlamp aim out of alignment13
Exhaust emissions hydrocarbon content excessive |7.3.B.1b|13
Brakes imbalanced across an axle11
Windscreen wiper does not clear the windscreen effectively10
Horn not working |1.6.2a|8
Nearside Headlamp not working on main beam |1.7.5a|5
Offside Headlamp not working on main beam |1.7.5a|5
Registration plate lamp issues5
Nearside Steering rack gaiter split |2.2.D.2d|4
Rear brake application uneven4
Brake pipe excessively corroded4
Nearside Headlamp not working on dipped beam |1.7.5a|4
Rear brake binding3
Battery insecure |1.9.1|3
Parking brake: efficiency below requirements |3.7.B.7|3
Nearside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c|3
Offside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c|3
Offside Headlamp not working on dipped beam |1.7.5a|3
Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|3
Offside Steering rack gaiter split |2.2.D.2d|3
Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|3
Offside Front position lamp|s| not working |1.1.A.3b|3
Rear parking brake recording little or no effort2
Exhaust emissions carbon monoxide content excessive |8.2.1.2 |b||2
Offside Front Headlamp not working on main beam |1.7.5a|2
Nearside Rear wheel cylinder leaking |3.6.A.1|2
Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a|2
Offside Front Steering rack gaiter split |2.2.D.2d|2
Registration plate issues2
Offside Track rod end ball joint has excessive play |2.2.B.1f|2
Centre Exhaust system not adequately supported |7.1.1|2
Hazard warning lamps inoperative |1.4.B.1b|2
Nearside Rear Shock absorber has a serious fluid leak |2.7.3|2
Nearside Track rod end ball joint has excessive play |2.2.B.1f|2
Front Exhaust has a major leak of exhaust gases |7.1.2|2
Nearside Rear Hydraulic brake cylinder leaking hydraulic fluid |3.6.A.1|2
Emissions not tested due to exhaust blow |7.3.A.1|2
Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f|2
Nearside Rear Suspension component mounting prescribed area is excessively corroded sill |2.4.A.3|2
Offside Front Front wheel bearing has excessive play |2.5.A.3c|2
Windscreen washer not working 2
All position lamps not working |1.1.A.3b|2
Nearside Front Steering rack gaiter split |2.2.D.2d|2
Hazard warning switch faulty |1.4.B.1d|2
Offside Rear position lamp|s| not working |1.1.A.3b|2
Windscreen has damage2
Rear Leaf spring to axle securing bolt insecure u bolts - axle onto leaf springs |2.4.B.7b|1
Parking brake efficiency below requirements |1.4.2 |a| |i||1
Front Exhaust system not adequately supported |7.1.1|1
Front Position lamp not working (4.2.1 (a) (ii))1
Rear Position lamp not working (4.2.1 (a) (ii))1
Headlamp not working on dipped beam (4.1.1 (a) (ii))1
Headlamp not working on main beam (4.1.1 (a) (ii))1
Headlamp aim not tested (4.1.2 (b))1
Nearside Rear Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement |2.4.B.2|1
Offside Rear Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement |2.4.B.2|1
Nearside rear brake recording little or no effort |3.7.B.5a|1
Electrical wiring insecure FOULING STEERING SHAFT IN ENGINE BAY |1.9.2a|1
Exhaust system not adequately supported |7.1.1|1
Offside Front Seat belt insecurely fixed to the vehicles structure BUCKLE |5.2.1a|1
Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Offside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Offside Outer Seat belt anchorage prescribed area is fractured |5.2.6|1
Nearside Rear Inner Suspension spring mounting prescribed area is excessively corroded sill coroded |2.4.A.3|1
Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f|1
Offside Front Direction indicators not working |1.4.A.2c|1
Offside Rear Position lamp not working |4.2.1 |a||1
Nearside Front Position lamp not working |4.2.1 |a||1
Offside Front Position lamp not working |4.2.1 |a||1
Offside Rear Suspension component fractured suspension strap. |5.3.3 |b| |ii||1
Nearside Front Track rod end ball joint dust cover insecure so that it no longer prevents the ingress of dirt |2.1.3 |g| |ii||1
Offside Front Track rod end ball joint dust cover insecure so that it no longer prevents the ingress of dirt |2.1.3 |g| |ii||1
Offside Front Steering rack gaiter missing or no longer prevents the ingress of dirt |2.1.3 |g| |ii||1
Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Offside Inner Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Offside Rear Leaf spring splayed and action impaired |2.4.B.1c|1
Nearside Rear Leaf spring splayed and action impaired |2.4.B.1c|1
Nearside Outer Front Lower Suspension arm has excessive play in a pin/bush |2.4.G.2|1
Nearside Front suspension has excessive play in a pin or bush of a lower wishbone inner bearing |2.5.B.1a|1
Offside Front suspension has excessive play in a pin or bush of a lower wishbone inner bearing |2.5.B.1a|1
Front All position lamps not working |1.1.A.3b|1
Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Nearside Front position lamp|s| not working |1.1.A.3b|1
Nearside Front Direction indicator not working |1.4.A.2c|1
Nearside Front All position lamps not working |1.1.A.3b|1
Offside Front All position lamps not working |1.1.A.3b|1
Nearside Rear All position lamps not working |1.1.A.3b|1
Offside Rear All position lamps not working |1.1.A.3b|1
Rear Exhaust has a major leak of exhaust gases |7.1.2|1
Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b|1
Offside Headlamp aim beam image obviously incorrect |1.8.A.1b|1
Offside Steering rack gaiter insecure |2.2.D.2d|1
Offside Battery insecure |1.9.1|1
Offside Front Front suspension locking device missing |2.5.A.4|1
Nearside Front Suspension arm attachment bracket/mounting insecure |2.4.G.1|1
Offside Front wheel bearing has excessive play |2.5.A.3c|1
Rear Exhaust system not adequately supported |7.1.1|1
Nearside Front Windscreen wiper blade deteriorated |8.2.2|1
Offside Front Windscreen wiper blade deteriorated |8.2.2|1
Body has a sharp edge caused by damage |6.1.C.1|1
Tie bar/rod has excessive play in a pin/bush |2.4.G.2|1
Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2|1
Nearside Rear wheel bearing has excessive play |2.6.2|1
Offside Rear wheel bearing has excessive play |2.6.2|1
Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a|1
Parking brake lever has no reserve travel |3.1.6b|1
Nearside Front Track rod end ball joint has excessive play |2.2.B.1f|1
Offside Front Track rod end ball joint has excessive play |2.2.B.1f|1
Offside Seat belt damaged sufficient to obstruct correct operation of the belt |5.2.2a|1
Position lamp switch faulty |1.1.A.1|1
Nearside Lower Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Offside Lower Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Nearside Rear Brake pipe inadequately clipped |3.6.B.1|1
rear brakes release unevenly |3.7.B.4|1
Offside Outer Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Nearside Outer Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Offside Inner Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Nearside Front Brake hose bulging under pressure |3.6.B.3|1
Nearside Rear Stop lamp not working |1.2.1b|1
Nearside Front Mechanical brake component locking device insecure |3.5.1l|1
Front brake application uneven1
Offside front brake binding |3.7.B.1|1
Offside Rear Leaf spring fractured |2.4.B.1a|1
Nearside Rear Upper Anti-roll bar attachment bracket/mounting insecure |2.4.G.1|1
Offside Rear Upper Anti-roll bar attachment bracket/mounting insecure |2.4.G.1|1
Offside Front Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1|1
Exhaust has a major leak of exhaust gases back box corrosion |7.1.2|1
Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Rear Fuel system component leaking |7.2.3|1
Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Direction indicators flashing more than 120 times a minute |1.4.A.2g|1
Nearside Headlamp aim not tested |1.8.A.1c|1
Offside Headlamp aim not tested |1.8.A.1c|1
Offside Windscreen wiper not operating over a large enough area to give an adequate view |8.2.1c|1
Offside Front Direction indicator not working |1.4.A.2c|1
Nearside Front Front suspension retaining device missing |2.5.A.4|1
Front Direction indicators not working |1.4.A.2c|1
Rear Direction indicators not working |1.4.A.2c|1
Indicator tell tale inoperative |1.4.A.2a|1
Hazard warning tell tale not working correctly |1.4.B.1e|1
Driver`s seat insecure |6.2.A.1|1
Front Passenger`s seat insecure |6.2.A.1|1
Front Electrical wiring deteriorated and bare wires exposed |1.9.2c|1
Brake servo vacuum pipe collapsed |3.6.C.1b|1
Offside Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f|1
Offside Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f|1
Nearside Lower Front suspension locking device missing |2.5.A.4|1
Central Vehicle structure corroded to the extent that the rigidity of the assembly is significantly reduced offside |6.1.1 |c| |i||1
Nearside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength above roll bar D bush |5.3.6 |a| |i||1
Nearside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength Rear spring shackle |5.3.6 |a| |i||1
Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength Front leaf spring mount |5.3.6 |a| |i||1
Exhaust emissions hydrocarbon content excessive |8.2.1.2 |b||1
Nearside Parking brake inoperative on one side |1.4.1 |a||1
Indicator switch insecure |1.4.A.1|1
Nearside Suspension spring mounting prescribed area is inadequately repaired |2.4.A.3|1
Offside Suspension spring mounting prescribed area is inadequately repaired |2.4.A.3|1
Direction indicators not working |1.4.A.2c|1
Offside Rear Leaf spring deteriorated and seriously weakened |2.4.B.1a|1
Brake hose excessively deteriorated1
Nearside Front Headlamp not working on dipped beam |1.7.5a|1
Offside Front Headlamp not working on dipped beam |1.7.5a|1
Nearside Front Headlamp not working on main beam |1.7.5a|1
Offside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Nearside Front Lower Suspension arm rubber mounting deteriorated resulting in excessive movement |2.4.G.2|1
Offside Front Lower Suspension arm rubber mounting deteriorated resulting in excessive movement |2.4.G.2|1
Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition |7.1.4|1
Front Exhaust has part of the system excessively deteriorated |7.1.1a|1
Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a|1

We get to these numbers by trawling through over 1 billion MOT test results since 2004 and crunched the numbers. We remove anything to do with Tyres, as they are model independent and group together common non-model specific issues. We are trying to get to a picture of what models have what issues.

Please note: We take the data from the DVSA. This data is raw and can contain typos and spelling mistakes that garages may have entered while recording a MOT result. Specifically miss-match on names of models and makes. We are constantly cleaning the data so bear with the odd issue.

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