| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 306 |
| Brake pipe excessively corroded | 181 |
| Headlamp aim out of alignment | 122 |
| Registration plate issues | 48 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 47 |
| Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 41 |
| Registration plate lamp issues | 38 |
| Offside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 38 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 33 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 28 |
| Windscreen washer not working | 27 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 27 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 26 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 25 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 23 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 22 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 21 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 21 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 20 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 20 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 20 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 19 |
| Front brake disc in such a condition that it is seriously weakened | 19 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 18 |
| Brakes imbalanced across an axle | 18 |
| Anti-lock braking system warning lamp indicates an ABS fault | 17 |
| Nearside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 17 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 15 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 15 |
| Nearside Rear Shock absorbers has a serious fluid leak | 15 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 13 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 12 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 12 |
| Front Service brake excessively fluctuating (1.2.1 (e)) | 12 |
| Offside Rear Shock absorbers has a serious fluid leak | 12 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 12 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 12 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 11 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 11 |
| Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 11 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 10 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 10 |
| Offside Front Shock absorbers has a serious fluid leak | 10 |
| Nearside Front Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 9 |
| Offside Front Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 9 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 9 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 9 |
| Offside Front Road wheel fixing missing (5.2.1 (a) (i)) | 9 |
| Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 9 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 9 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 8 |
| Nearside Front Shock absorbers has a serious fluid leak | 8 |
| Nearside Rear Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 8 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 8 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 7 |
| Nearside Rear Headlamp levelling device inoperative (4.1.5 (a)) | 7 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 7 |
| Parking brake lever has excessive movement indicating incorrect adjustment |1.1.6 |c|| | 7 |
| Rear fog lamp does not emit a steady red light (4.5.4 (a)) | 7 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 7 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 6 |
| Brake performance not tested (1.2.1 (g)) | 6 |
| Rear brake disc in such a condition that it is seriously weakened | 6 |
| Offside Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 6 |
| Trailer electrical socket (13 pin) not operating the trailer lamps as intended (4.10 (c) (i)) | 6 |
| Nearside Front Upper Suspension component ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 5 |
| Nearside Front Road wheel fixing missing (5.2.1 (a) (i)) | 5 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 5 |
| Nearside Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 5 |
| Offside Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 5 |
| Headlamp cleaning device for LED or HID headlamp inoperative |4.1.6 |a| |ii|| | 5 |
| Headlamp levelling device inoperative (4.1.5 (a)) | 5 |
| Brake performance unable to be tested (1.2.1 (g)) | 5 |
| Nearside Front Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 5 |
| Offside Rear Service brake excessively fluctuating (1.2.1 (e)) | 5 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Nearside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 5 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 5 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Offside Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |