| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 207 |
| Registration plate lamp issues | 116 |
| Exhaust emissions carbon monoxide content excessive |7.3.B.1a| | 97 |
| Windscreen wiper does not clear the windscreen effectively | 73 |
| Parking brake: efficiency below requirements |3.7.B.7| | 71 |
| Horn not working |1.6.2a| | 55 |
| Exhaust emissions hydrocarbon content excessive |7.3.B.1b| | 42 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 39 |
| Registration plate issues | 37 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 33 |
| Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b)) | 28 |
| Offside Rear fog lamp not working |1.3.2b| | 23 |
| Rear parking brake recording little or no effort | 23 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 22 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 20 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 16 |
| Offside Headlamp not working on main beam |1.7.5a| | 15 |
| Windscreen washer not working | 15 |
| Brakes imbalanced across an axle | 13 |
| Nearside Headlamp not working on main beam |1.7.5a| | 13 |
| Offside Stop lamp not working |1.2.1b| | 12 |
| Brake hose excessively deteriorated | 12 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 11 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 11 |
| Nearside Stop lamp not working |1.2.1b| | 11 |
| Nearside Steering rack gaiter split |2.2.D.2d| | 9 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 9 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 9 |
| Service brake: efficiency below requirements |3.7.B.7| | 9 |
| Nearside Front Steering rack gaiter split |2.2.D.2d| | 9 |
| Offside Obligatory mirror insecure |8.1.1| | 9 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 9 |
| Offside Rear Stop lamp not working |1.2.1b| | 9 |
| Exhaust emissions carbon monoxide content excessive |8.2.1.2 |b|| | 9 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 8 |
| Nearside Front Headlamp not working on main beam |1.7.5a| | 8 |
| Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b| | 8 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 8 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 8 |
| Rear fog lamp not working |1.3.2b| | 8 |
| Stop lamp remains on when the brakes are released | 8 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 8 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 8 |
| Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b)) | 7 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 7 |
| Offside Side repeater not working |1.4.A.2c| | 7 |
| Hazard warning switch faulty |1.4.B.1d| | 7 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 7 |
| All position lamps not working |1.1.A.3b| | 6 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 6 |
| Offside Steering rack gaiter split |2.2.D.2d| | 6 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 6 |
| Offside Front Direction indicator not working |1.4.A.2c| | 6 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 6 |
| Exhaust emissions hydrocarbon content excessive |8.2.1.2 |b|| | 6 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 6 |
| Front Windscreen wiper not operating automatically when switched on |8.2.1b| | 6 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 6 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 6 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 6 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 6 |
| Headlamp switch faulty |1.7.1| | 6 |
| Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b)) | 5 |
| Steering column universal joint has excessive play |2.1.5| | 5 |
| Offside Front Upper Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 5 |
| Horn not working (7.7 (a)) | 5 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 5 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 5 |
| Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 5 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 5 |
| Offside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 5 |
| Offside Front Steering rack gaiter split |2.2.D.2d| | 5 |
| Nearside Steering rack gaiter insecure |2.2.D.2d| | 5 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 5 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 5 |
| Parking brake lever has no reserve travel |3.1.6b| | 5 |
| Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 5 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 5 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 5 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 4 |
| Front brake application uneven | 4 |
| Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 4 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 4 |
| Position lamp switch insecure |1.1.A.1| | 4 |
| Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 4 |
| Brake hose has insufficient room to move | 4 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 4 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 4 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 4 |
| Offside Rear Rear position lamp|s| not working |1.1.A.3b| | 4 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 4 |
| Offside Indicator tell tale inoperative |1.4.A.2a| | 4 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 4 |
| Nearside Indicator tell tale inoperative |1.4.A.2a| | 4 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 4 |
| Nearside Front Steering system has a road wheel fouling a part of the vehicle |2.2.D.2a| | 4 |
| Rear Exhaust system not adequately supported |7.1.1| | 4 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 4 |
| Windscreen has damage | 4 |
| Stop lamp(s) all not working (4.3.1 (a) (iii)) | 4 |
| Exhaust carbon monoxide content at idle exceeds default limits |8.2.1.2 |b|| | 4 |
| Rear fog lamp switch faulty |1.3.1a| | 4 |
| Emissions not tested |7.0| | 4 |
| Nearside Front Upper Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 4 |
| Nearside Front Exhaust has a major leak of exhaust gases |7.1.2| | 4 |
| Exhaust catalytic converter missing where one was fitted as standard |7.1.3| | 4 |
| Steering system excessively tight |2.2.D.1| | 4 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 4 |
| Rear Stop lamp(s) all not working (4.3.1 (a) (iii)) | 3 |
| Fuel pipe leaking |7.2.3| | 3 |
| Offside front brake binding |3.7.B.1| | 3 |
| Offside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 3 |
| Nearside Front Windscreen wiper blade missing |8.2.2| | 3 |
| Nearside Side repeater not working |1.4.A.2c| | 3 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear fog lamp tell tale not working |1.3.1b| | 3 |
| Headlamp not working on main beam |1.7.5a| | 3 |
| Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 3 |
| Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 3 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 3 |
| Nearside Rear Stop lamp not working |1.2.1b| | 3 |
| Rear fog lamp not working |4.5.1 |a| |ii|| | 3 |
| Nearside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 3 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 3 |
| Windscreen wiper blade insecure | 3 |
| Front brake disc in such a condition that it is seriously weakened | 3 |
| Nearside Front Shock absorber has negligible damping effect |2.7.5| | 3 |
| Offside Front Shock absorber has negligible damping effect |2.7.5| | 3 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 3 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 3 |
| Offside Front Lower Suspension arm corroded and seriously weakened |2.4.G.1| | 3 |
| Offside Front Obligatory mirror insecure |8.1.1| | 3 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Rear brake binding | 3 |
| Hazard warning switch insecure |1.4.B.1d| | 3 |
| Rear fog lamp switch insecure |1.3.1a| | 3 |
| Headlamp switch insecure |1.7.1| | 3 |
| Nearside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 3 |
| Nearside Front Upper Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 3 |
| Exhaust engine idle speed too high |7.3.D.1| | 3 |
| Emissions not tested |7.3.A.1| | 3 |
| Offside Obligatory mirror missing |8.1.1| | 3 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 3 |