| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 1389 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 767 |
| Windscreen wiper does not clear the windscreen effectively | 593 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 298 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 266 |
| Windscreen washer not working | 265 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 212 |
| Registration plate lamp issues | 208 |
| Registration plate issues | 190 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 148 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 114 |
| Exhaust emissions exceed default limit of 0.7m-1 (8.2.2.2 (b)) | 109 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 104 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 97 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 86 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 86 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 83 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 81 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 76 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 75 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 70 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 65 |
| Nearside Front Side repeater not working (4.4.1 (a) (ii)) | 64 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 57 |
| Offside Front Road wheel fixing missing (5.2.1 (a) (i)) | 54 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 52 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 51 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 50 |
| Brakes imbalanced across an axle | 44 |
| Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour (8.2.2.2 (d)) | 43 |
| Offside Front Side repeater not working (4.4.1 (a) (ii)) | 42 |
| Exhaust emissions exceed manufacturers specified limit 0.50 (8.2.2.2 (a)) | 42 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 40 |
| Front brake disc in such a condition that it is seriously weakened | 38 |
| Nearside Rear Shock absorbers has a serious fluid leak | 36 |
| Offside Rear Shock absorbers has a serious fluid leak | 36 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 33 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 32 |
| Offside Rear Road wheel fixing missing (5.2.1 (a) (i)) | 30 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 30 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 28 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 27 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 27 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 26 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 25 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 25 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 25 |
| Offside Headlamp not working on main beam (4.1.1 (a) (ii)) | 24 |
| Horn not working (7.7 (a)) | 24 |