| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 249 |
| Brake pipe excessively corroded | 104 |
| Registration plate issues | 71 |
| Windscreen wiper does not clear the windscreen effectively | 54 |
| Front brake disc in such a condition that it is seriously weakened | 44 |
| Registration plate lamp issues | 31 |
| Brakes imbalanced across an axle | 25 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 16 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 14 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 12 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 10 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 10 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 7 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 7 |
| Rear brake disc in such a condition that it is seriously weakened | 7 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 7 |
| Nearside Front Shock absorbers has a serious fluid leak | 7 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 7 |
| Parking brake: efficiency below requirements |3.7.B.7| | 7 |
| Front brake excessively fluctuating | 7 |
| Headlamp cleaning device inoperative |1.7.2| | 6 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 6 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 6 |
| Windscreen has damage | 6 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 5 |
| Offside Front Valve stem seriously damaged |4.1.D.1e| | 5 |
| Offside Rear Stop lamp not working |1.2.1b| | 5 |
| Horn not working |1.6.2a| | 4 |
| Nearside Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Offside Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 4 |
| Nearside Stop lamp not working |1.2.1b| | 4 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 4 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 4 |
| Nearside Front Valve stem seriously damaged |4.1.D.1e| | 4 |
| Nearside Front Headlamp cleaning device inoperative |1.7.2| | 4 |
| Offside Front Headlamp cleaning device inoperative |1.7.2| | 4 |
| Nearside Front Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Rear parking brake recording little or no effort | 4 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 4 |
| Offside Rear Coil spring fractured or broken |5.3.1 |b| |i|| | 4 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 3 |
| Offside Stop lamp not working |1.2.1b| | 3 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 3 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 3 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 3 |
| Nearside Rear Stop lamp not working |1.2.1b| | 3 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Windscreen washer not working | 3 |
| Nearside Front Inner Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Offside Front Inner Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 3 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 3 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 3 |
| Parking brake lever has no reserve travel |3.1.6b| | 3 |
| Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 3 |
| Nearside Rear Valve stem seriously damaged |4.1.D.1e| | 3 |
| Offside Rear Valve stem seriously damaged |4.1.D.1e| | 3 |
| Electronic stability system warning lamp indicates a fault |3.4.1c| | 3 |
| Nearside Headlamp cleaning device inoperative |1.7.2| | 3 |
| Offside Headlamp cleaning device inoperative |1.7.2| | 3 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 3 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 3 |
| Nearside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 3 |
| Offside Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 3 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 3 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 3 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 3 |