| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 541 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 492 |
| Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 400 |
| Headlamp aim out of alignment | 304 |
| Brake pipe excessively corroded | 291 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 91 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 85 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 76 |
| Brakes imbalanced across an axle | 74 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 48 |
| Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour (8.2.2.2 (d)) | 39 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 37 |
| Registration plate lamp issues | 37 |
| Registration plate issues | 36 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 33 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 31 |
| Rear brake disc in such a condition that it is seriously weakened | 30 |
| Offside Rear Coil spring fractured or broken |5.3.1 |b| |i|| | 27 |
| Offside Front Road wheel fixing missing (5.2.1 (a) (i)) | 27 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 26 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 25 |
| Nearside Rear Shock absorbers has a serious fluid leak | 24 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 23 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 23 |
| Exhaust emissions exceed default limit of 0.7m-1 (8.2.2.2 (b)) | 22 |
| Windscreen washer not working | 22 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 21 |
| Front brake disc in such a condition that it is seriously weakened | 20 |
| Offside Rear Shock absorbers has a serious fluid leak | 20 |
| Offside Front Anti-roll bar linkage ball joint likely to become detached (5.3.4 (a) (ii)) | 19 |
| Nearside Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 18 |
| Exhaust emits excessive smoke or vapour likely to obscure the vision of other road users (8.2.2.2 (c)) | 17 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 16 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 14 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 14 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 14 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 14 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 14 |
| Nearside Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 14 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 13 |
| Offside Front Anti-roll bar linkage fractured (5.3.3 (b) (ii)) | 12 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 12 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 12 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 12 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 12 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 12 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 11 |
| Offside Rear Seat belt buckle not functioning as intended (7.1.2 (d)) | 11 |
| Nearside Front Road wheel fixing missing (5.2.1 (a) (i)) | 11 |