| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 575 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 186 |
| Windscreen wiper does not clear the windscreen effectively | 168 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 163 |
| Registration plate issues | 108 |
| Windscreen washer not working | 50 |
| Offside Front Position lamp not working |4.2.1 |a|| | 48 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 46 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 45 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 36 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 35 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 34 |
| Front brake disc in such a condition that it is seriously weakened | 32 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 31 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 31 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 30 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 29 |
| Horn not working (7.7 (a) (ii)) | 29 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 28 |
| Horn not working (7.7 (a)) | 24 |
| Horn not working |7.7 |a| |ii|| | 24 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 20 |
| Nearside Side repeater not working |1.4.A.2c| | 20 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 20 |
| Horn not working |1.6.2a| | 19 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 18 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 17 |
| Brakes imbalanced across an axle | 17 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 16 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 16 |
| Nearside Front Road wheel fixing missing (5.2.1 (a) (i)) | 16 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 15 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 15 |
| Nearside Side repeater not working |4.4.1 |a| |ii|| | 15 |
| Rear brake disc in such a condition that it is seriously weakened | 14 |
| Nearside Rear Road wheel fixing missing (5.2.1 (a) (i)) | 14 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 14 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 14 |
| Anti-lock braking system warning lamp indicates an ABS fault | 13 |
| Nearside Front Side repeater not working (4.4.1 (a) (ii)) | 13 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 13 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 13 |
| Offside Rear Shock absorbers has a serious fluid leak | 13 |
| Offside Side repeater not working |1.4.A.2c| | 12 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 12 |
| Front brake excessively fluctuating | 12 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 11 |
| Offside Side repeater not working |4.4.1 |a| |ii|| | 10 |
| Front Service brake excessively fluctuating (1.2.1 (e)) | 10 |
| Registration plate lamp issues | 10 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 10 |
| Offside Front Road wheel fixing missing (5.2.1 (a) (i)) | 9 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 8 |
| Windscreen has damage | 8 |
| Brake pipe excessively corroded | 8 |