| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 346 |
| Brake pipe excessively corroded | 248 |
| Parking brake: efficiency below requirements |3.7.B.7| | 200 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 144 |
| Registration plate issues | 132 |
| Windscreen wiper does not clear the windscreen effectively | 126 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 116 |
| Registration plate lamp issues | 79 |
| Anti-lock braking system warning lamp indicates an ABS fault | 71 |
| Exhaust emissions exceed manufacturer`s specified limit |8.2.2.2 |a|| | 70 |
| Rear parking brake recording little or no effort | 65 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 58 |
| Brakes imbalanced across an axle | 58 |
| Front brake disc in such a condition that it is seriously weakened | 57 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 51 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 49 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 49 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 47 |
| Windscreen washer not working | 44 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 43 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 42 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 41 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 41 |
| Exhaust emits an excessive level of metered smoke |7.4.B.3a| | 40 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 39 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 33 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 31 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 29 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 29 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 27 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 24 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 24 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 23 |
| Front brake application uneven | 22 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 21 |
| Front brake excessively fluctuating | 21 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 19 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 18 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 17 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 16 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 15 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 15 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 14 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 14 |
| Offside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 14 |
| Electronic stability system warning lamp indicates a fault |3.4.1c| | 14 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 14 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 13 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 13 |
| Nearside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 13 |
| Offside Front Lower Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 13 |
| Nearside Front Lower Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 13 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 13 |
| Offside Front Position lamp not working |4.2.1 |a|| | 13 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 13 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 12 |
| Exhaust emissions exceed default limit of 1.5m-1 (8.2.2.2 (b)) | 12 |
| Electronic parking brake warning indicates a malfunction (1.1.6 (e)) | 12 |
| Nearside Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 12 |
| Nearside Front Wheel bolt|s| missing |4.2.A.1e| | 12 |
| Nearside Rear Wheel bolt|s| missing |4.2.A.1e| | 12 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 12 |
| Windscreen has damage | 12 |
| Electronic parking brake warning indicates a malfunction |3.1.7| | 12 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 11 |
| Offside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 11 |
| Brake pedal anti-slip provision worn smooth |3.3.A.1b| | 11 |
| Nearside Front Road wheel fixing missing (5.2.1 (a) (i)) | 11 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 11 |
| Engine MIL inoperative or indicates a malfunction |8.2.2.2 |g|| | 11 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 10 |
| Rear brake disc in such a condition that it is seriously weakened | 10 |
| Electronic parking brake control inoperative (1.1.6 (d)) | 10 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 10 |
| Nearside Rear Road wheel fixing missing (5.2.1 (a) (i)) | 10 |
| Nearside Side repeater not working |1.4.A.2c| | 10 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 9 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 9 |
| Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour (8.2.2.2 (d)) | 9 |
| Nearside Front Shock absorbers has a serious fluid leak | 9 |
| Fuel system component leaking |7.2.3| | 9 |