| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 337 |
| Headlamp aim out of alignment | 168 |
| Registration plate lamp issues | 61 |
| Brake pipe excessively corroded | 34 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 30 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 29 |
| Front brake disc in such a condition that it is seriously weakened | 23 |
| Registration plate issues | 22 |
| Windscreen washer not working | 13 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 12 |
| Offside Side repeater not working |1.4.A.2c| | 11 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 10 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 10 |
| Offside Rear Shock absorbers has a serious fluid leak | 10 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 10 |
| Rear brake disc in such a condition that it is seriously weakened | 9 |
| Nearside Side repeater not working |1.4.A.2c| | 7 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 7 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 7 |
| Front brake excessively fluctuating | 7 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 7 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 6 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 6 |
| Brakes imbalanced across an axle | 6 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 6 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 6 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 6 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 6 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 5 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 5 |
| Nearside Stop lamp not working |1.2.1b| | 5 |
| Nearside Front Side repeater not working (4.4.1 (a) (ii)) | 5 |
| Brake performance not tested (1.2.1 (g)) | 5 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 4 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 4 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Offside Front Position lamp not working |4.2.1 |a|| | 4 |
| Windscreen wiper blade insecure | 4 |
| Windscreen has damage | 3 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 3 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 3 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 3 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 3 |
| Nearside Side repeater not working |4.4.1 |a| |ii|| | 3 |
| Offside Side repeater not working |4.4.1 |a| |ii|| | 3 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 3 |
| Nearside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Service brake: efficiency below requirements |3.7.C.1a| | 3 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 3 |
| Offside Rear Seat belt has a cut which has significantly weakened the webbing |5.2.2a| | 3 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 3 |
| Offside Stop lamp(s) adversely affected by the operation of another lamp (4.3.3 (b)) | 3 |