| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 838 |
| Headlamp aim out of alignment | 442 |
| Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 115 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 98 |
| Brake pipe excessively corroded | 68 |
| Registration plate issues | 65 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 57 |
| Windscreen washer not working | 46 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 36 |
| Rear brake disc in such a condition that it is seriously weakened | 34 |
| Registration plate lamp issues | 33 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 33 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 29 |
| Brakes imbalanced across an axle | 28 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 27 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 25 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 24 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 23 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 18 |
| Nearside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 17 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 17 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 17 |
| Brake performance not tested (1.2.1 (g)) | 14 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 13 |
| Front brake disc in such a condition that it is seriously weakened | 12 |
| Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour (8.2.2.2 (d)) | 12 |
| Electronic parking brake warning indicates a malfunction (1.1.6 (e)) | 12 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 12 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 11 |
| Rear fog lamp tell-tale not working (4.9.1 (a) (ii)) | 10 |
| Nearside Front Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 10 |
| Offside Front Anti-roll bar linkage insecure and impairing directional stability (5.3.3 (a) (ii)) | 10 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 9 |
| Nearside Rear Service brake excessively fluctuating (1.2.1 (e)) | 9 |
| Offside Front Anti-roll bar linkage insecurely attached (5.3.3 (a) (i)) | 9 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 8 |
| Offside Front Road wheel fixing missing (5.2.1 (a) (i)) | 8 |
| Exhaust emissions exceed default limit of 0.7m-1 (8.2.2.2 (b)) | 8 |
| Offside Front Anti-roll bar linkage ball joint likely to become detached (5.3.4 (a) (ii)) | 8 |
| Offside Front Anti-roll bar linkage fractured (5.3.3 (b) (ii)) | 8 |