| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 628 |
| Brake pipe excessively corroded | 376 |
| Windscreen wiper does not clear the windscreen effectively | 353 |
| Registration plate issues | 251 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 182 |
| Parking brake: efficiency below requirements |3.7.B.7| | 159 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 119 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 97 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 95 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 92 |
| Registration plate lamp issues | 91 |
| Brake hose excessively deteriorated | 87 |
| Anti-lock braking system warning lamp indicates an ABS fault | 81 |
| Offside Stop lamp not working |1.2.1b| | 71 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 60 |
| Nearside Stop lamp not working |1.2.1b| | 56 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 56 |
| Parking brake lever has no reserve travel |3.1.6b| | 55 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 55 |
| Rear parking brake recording little or no effort | 50 |
| Windscreen washer not working | 48 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 48 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 44 |
| Offside Side repeater not working |1.4.A.2c| | 43 |
| Brakes imbalanced across an axle | 39 |
| Nearside Side repeater not working |1.4.A.2c| | 36 |
| Service brake: efficiency below requirements |3.7.B.7| | 36 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 35 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 33 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 32 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 31 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 30 |
| Front Steering damper leaking oil |2.2.C.1f| | 30 |
| Exhaust system not adequately supported |7.1.1| | 29 |
| Centre Exhaust system not adequately supported |7.1.1| | 29 |
| Bonnet cannot be secured in the closed position |8.4.1| | 29 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 27 |
| Offside Rear fog lamp not working |1.3.2b| | 27 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 27 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 26 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 26 |
| Offside Side repeater incorrect colour |1.4.A.2f| | 25 |
| Nearside Rear Stop lamp not working |1.2.1b| | 24 |
| Steering damper leaking oil |2.2.C.1f| | 24 |
| Horn not working |1.6.2a| | 24 |
| Nearside Side repeater incorrect colour |1.4.A.2f| | 24 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 24 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 23 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 21 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 21 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 21 |
| Rear fog lamp tell tale not working |1.3.1b| | 20 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 20 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 20 |
| Hazard warning switch faulty |1.4.B.1d| | 20 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 19 |
| Offside Rear Stop lamp not working |1.2.1b| | 19 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 19 |
| Rear fog lamp not working |1.3.2b| | 19 |
| Front brake disc in such a condition that it is seriously weakened | 18 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 18 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 18 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 18 |
| Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b)) | 18 |
| Front Exhaust system not adequately supported |7.1.1| | 17 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 17 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 16 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 16 |
| Electronic stability system warning lamp indicates a fault |3.4.1c| | 16 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 15 |
| Windscreen has damage | 15 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 15 |
| Offside Front Side repeater not working |1.4.A.2c| | 15 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 15 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 14 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 14 |
| Front Windscreen wiper not operating automatically when switched on |8.2.1b| | 13 |
| Nearside Rear Wheel bolt|s| missing |4.2.A.1e| | 13 |
| Offside Front Side repeater not working (4.4.1 (a) (ii)) | 13 |
| Offside Front Inner Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 12 |
| Offside Inner Track rod end ball joint has excessive play |2.2.B.1f| | 12 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive (7.3.D.3) | 12 |
| Nearside Front Side repeater not working |1.4.A.2c| | 12 |
| Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 11 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Offside Front Wheel bolt|s| missing |4.2.A.1e| | 11 |
| Emissions not tested |7.0| | 11 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 11 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 11 |
| Offside Front Direction indicator not working |1.4.A.2c| | 11 |
| Bonnet cannot be secured in the closed position (3.1 (b) (i)) | 10 |
| Rear brake application uneven | 10 |
| Rear Exhaust system not adequately supported |7.1.1| | 10 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 10 |
| Nearside Front Wheel bolt|s| missing |4.2.A.1e| | 10 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 10 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 10 |
| Offside Side repeater not working |4.4.1 |a| |ii|| | 10 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 10 |
| Nearside Front Side repeater not working (4.4.1 (a) (ii)) | 10 |
| Direction indicators not working |1.4.A.2c| | 10 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 10 |