| Most common failures | No# failures |
|---|
| Registration plate issues | 21 |
| Registration plate lamp issues | 13 |
| Headlamp aim out of alignment | 11 |
| Parking brake lever has no reserve travel |3.1.6b| | 10 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 5 |
| Windscreen wiper does not clear the windscreen effectively | 5 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Service brake: efficiency below requirements |3.7.C.1a| | 4 |
| Windscreen washer not working | 4 |
| Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 3 |
| Offside Stop lamp not working |1.2.1b| | 3 |
| Nearside Headlamp aim beam image kick up to the offside |1.8| | 3 |
| Offside Headlamp aim beam image kick up to the offside |1.8| | 3 |
| Battery insecure |1.9.1| | 3 |
| Offside Obligatory mirror missing |8.1.1| | 3 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 2 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 2 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 2 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 2 |
| Nearside Front wheel bearing rough when rotated |2.5.A.2| | 2 |
| Indicator tell tale inoperative |1.4.A.2a| | 2 |
| Braking system leaking |3.6.A.1| | 2 |
| Offside Rear Rear wheel bearing rough when rotated |2.6.1| | 2 |
| Rear parking brake recording little or no effort | 2 |
| Nearside Front Position lamp not working |4.2.1 |a| |ii|| | 2 |
| Stop lamp|s| all not working |4.3.1 |a| |iii|| | 2 |
| Offside Front Front wheel bearing rough when rotated |2.5.A.2| | 2 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 2 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 2 |
| Direction indicators not working |1.4.A.2c| | 2 |
| Brakes imbalanced across an axle | 2 |
| Rear Mechanical brake component has restricted free movement | 2 |
| Nearside Front Seat belt retracting mechanism defective |5.2.5b| | 1 |
| Offside Front Seat belt retracting mechanism defective |5.2.5b| | 1 |
| Offside Rear fog lamp missing |1.3.2a| | 1 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 1 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 1 |
| Front Headlamp switch insecure |1.7.1| | 1 |
| Nearside Front Obligatory mirror insecure |8.1.1| | 1 |
| Rear Shock absorber has negligible damping effect |2.7.5| | 1 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Brake pedal has insufficient reserve movement |3.3.A.5| | 1 |
| Nearside Front Brake cable has restricted free movement |3.5.1k| | 1 |
| Offside Front Brake cable has restricted free movement |3.5.1k| | 1 |
| Offside front brake binding |3.7.B.1| | 1 |
| Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 1 |
| Exhaust emissions carbon monoxide content excessive |7.3.B.1a| | 1 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 1 |
| Brake hose has insufficient room to move | 1 |
| Nearside Rear Drive shaft which forms part of the suspension coupling gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.4.G.4e| | 1 |
| Offside Rear Drive shaft which forms part of the suspension coupling gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.4.G.4e| | 1 |
| Fuel hose insecure |7.2.1| | 1 |
| Nearside Front Electrical wiring damaged, likely to cause a short |1.9.2b| | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Offside Rear Rear fog lamp missing |1.3.2a| | 1 |
| Direction indicators not working all |1.4.A.2c| | 1 |
| Hazard warning lamps inoperative |1.4.B.1b| | 1 |
| Nearside Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Offside Outer Front Lower Ball joint has excessive play |2.2.B.1f| | 1 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 1 |
| Hazard warning lamps inoperative |4.4.1 |e|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Obligatory mirror insecure |3.3 |b| |ii|| | 1 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Front Upper Shock absorbers has an excessively worn bush bolt loose |5.3.2 |c|| | 1 |
| Nearside Front Shock absorber has negligible damping effect |2.7.5| | 1 |
| Offside Front Shock absorber has negligible damping effect |2.7.5| | 1 |
| Offside Rear reflector insecure |1.5.1a| | 1 |
| Offside Front Macpherson strut has excessive play in the sliding bush or gland |2.5.B.1b| | 1 |
| Hazard warning switch faulty |1.4.B.1d| | 1 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 1 |
| Nearside Rear Drive shaft which forms part of the suspension distorted |2.4.G.4a| | 1 |
| Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 1 |
| Nearside Rear Drive shaft uj which forms part of the suspension has an incorrectly seated universal joint flange |2.4.G.4c| | 1 |
| Offside Rear Drive shaft uj which forms part of the suspension has an incorrectly seated universal joint flange |2.4.G.4c| | 1 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 1 |
| Offside Front Direction indicator not working |1.4.A.2c| | 1 |
| Rear Rear fog lamp missing |1.3.2a| | 1 |
| Rear fog lamp tell tale not working |1.3.1b| | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Stop lamp not working BOTH |1.2.1b| | 1 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 1 |
| Nearside Front Coil spring not correctly located FOULING ON CHASSIS UPRIGHT |2.4.C.2| | 1 |
| Stop lamp(s) not working (4.3.1 (a) (ii)) | 1 |
| Nearside Headlamp excessively damaged so that the light output is severely reduced |1.7.5a| | 1 |
| Offside Headlamp excessively damaged so that the light output is severely reduced |1.7.5a| | 1 |
| Rear reflector missing |1.5.1a| | 1 |
| Windscreen wiper not operating automatically when switched on |8.2.1b| | 1 |
| Headlamp aim not tested |1.8.A.1c| | 1 |
| Nearside Obligatory mirror missing |8.1.1| | 1 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Inner Track rod end ball joint has excessive play |2.2.B.1f| | 1 |
| Nearside Front Front wheel bearing rough when rotated |2.5.A.2| | 1 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 1 |
| Offside Indicator tell tale inoperative |1.4.A.2a| | 1 |
| Nearside Indicator tell tale inoperative |1.4.A.2a| | 1 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 1 |
| Hazard warning tell tale not working correctly |1.4.B.1e| | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Front Brake hose leaking on a hydraulic braking system (1.1.12 (c) (ii)) | 1 |
| Brake hose leaking on a hydraulic braking system (1.1.12 (c) (ii)) | 1 |
| Offside Rear Service brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 1 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 1 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 1 |
| Nearside Rear Drive shaft bearing housing insecure (6.1.7 (f) (i)) | 1 |
| Nearside Rear Position lamp not working |4.2.1 |a| |ii|| | 1 |
| Offside Front Position lamp not working |4.2.1 |a| |ii|| | 1 |
| Offside Front Brake hose excessively damaged |3.6.B.4d| | 1 |
| Hydraulic brake cylinder leaking hydraulic fluid master |3.6.A.1| | 1 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |1.2.1b| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.6.G.1f| | 1 |
| Fuel system component leaking excessively or a risk of fire |6.1.3 |b| |ii|| | 1 |
| Offside Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt |6.1.7 |g| |ii|| | 1 |
| Nearside Front Headlamp insecure |4.1.1 |c|| | 1 |
| Nearside Drag link end loose |2.2.B.1d| | 1 |
| Hydraulic brake cylinder leaking hydraulic fluid |3.6.A.1| | 1 |
| Rear brake application uneven | 1 |
| Speedometer clearly inoperative found not working on brake test (7.8 (b) (ii)) | 1 |
| Nearside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Steering column attachment defective frame has excessive movement (2.2.2 (d) (i)) | 1 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 1 |
| Main beam tell-tale not working Interaction with indicators (4.9.1 (a) (ii)) | 1 |
| Nearside Direction indicators flashing more than 120 times a minute |1.4.A.2g| | 1 |
| Offside Direction indicators flashing more than 120 times a minute |1.4.A.2g| | 1 |