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MOT History from tests of petrol MG Bs year 1984

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

mot history
Pass percent:67.03%
(The average a petrol MG B year 1984 passes without issue)
Based on:91 MOT Tests
Most common failuresNo# failures
Registration plate lamp issues8
Exhaust emissions carbon monoxide content excessive |7.3.B.1a|6
Headlamp aim out of alignment6
Offside Front position lamp|s| not working |1.1.A.3b|4
Exhaust emissions hydrocarbon content excessive |7.3.B.1b|4
Rear brake binding3
Brakes imbalanced across an axle3
Nearside Rear position lamp|s| not working |1.1.A.3b|3
Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f|3
Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f|3
Registration plate issues3
Nearside Stop lamp not working |1.2.1b|2
Nearside Steering rack gaiter split |2.2.D.2d|2
Offside Front Direction indicator not working |1.4.A.2c|2
Nearside Steering rack gaiter missing or no longer prevents the ingress of dirt |2.1.3 |g| |ii||2
Direction indicators flashing less than 60 times a minute |1.4.A.2g|2
Hazard warning switch faulty |1.4.B.1d|2
Hazard warning tell tale not working correctly |1.4.B.1e|2
Offside Headlamp not working on main beam |1.7.5a|2
Rear fog lamp tell tale not working |1.3.1b|2
Nearside Rear Suspension component mounting prescribed area is excessively corroded outer sill |2.4.A.3|1
Nearside Inner Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Offside Inner Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2|1
Centre Exhaust system not adequately supported |7.1.1|1
Exhaust carbon monoxide content at idle exceeds default limits |8.2.1.2 |b||1
Exhaust hydrocarbon content after 2nd fast idle exceeds default limits |8.2.1.2 |b||1
Windscreen washer not working 1
Sound deadening material likely to become detached under bonnet |8.1.1 |b| |ii||1
Nearside Rear Direction indicators not in good working order |function impaired| |1.5.A1b|1
Offside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2|1
Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b))1
Stop lamp not working |1.2.1b|1
Nearside Front Headlamp not working on dipped beam |1.7.5a|1
Direction indicators flashing more than 120 times a minute |1.4.A.2g|1
Nearside Front Position lamp not working (4.2.1 (a) (ii))1
Offside Rear Position lamp not working (4.2.1 (a) (ii))1
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))1
Oil leaking excessively from engine |8.4.1 |a| |i||1
Nearside Front Service brake excessively binding (1.2.1 (f))1
Nearside Rear Service brake excessively binding (1.2.1 (f))1
Offside Rear Service brake excessively binding (1.2.1 (f))1
Nearside Front Windscreen wiper blade missing (3.4 (b) (ii))1
Offside Rear fog lamp missing |1.3.2a|1
Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3|1
Bonnet cannot be secured in the closed position |3.1 |b| |i||1
Offside Stop lamp|s| adversely affected by the operation of another lamp |4.3.3 |b||1
Brake hydraulic reservoir fluid level significantly below minimum level |1.1.10 |d| |ii||1
Offside Rear Hydraulic brake cylinder leaking and braking performance affected |1.1.16 |b| |ii||1
Exhaust emissions hydrocarbon content excessive |8.2.1.2 |b||1
Offside Rear fog lamp not working |1.3.2b|1
Driver`s seat insecure |6.2.A.1|1
Front Passenger`s seat insecure |6.2.A.1|1
Rear Rear fog lamp not working (4.5.1 (a) (ii))1
Nearside Front Steering rack gaiter missing or no longer prevents the ingress of dirt (2.1.3 (g) (ii))1
Nearside Front Track rod end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii))1
Brake pipe excessively corroded1
Rear Service brake excessively binding |1.2.1 |f||1
Nearside Direction indicator not working |4.4.1 |a| |ii||1
Seat belt missing |7.1.2 |a||1
Nearside Front position lamp|s| not working |1.1.A.3b|1
Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|1
Nearside Headlamp not working on dipped beam |1.7.5a|1
Offside Headlamp not working on dipped beam |1.7.5a|1
Nearside Headlamp not working on main beam |1.7.5a|1
Direction indicators not working |1.4.A.2c|1
Offside Rear Direction indicator adversely affected by the operation of another lamp |1.4.A.2h|1
Offside Stop lamp not working |1.2.1b|1
Headlamp aim not tested |1.8.A.1c|1
Bonnet cannot be secured in the closed position |8.4.1|1
Nearside rear brake juddering severely |3.7.A.5b|1
Windscreen has damage1
Front Exhaust has a major leak of exhaust gases |7.1.2|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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