| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 1870 |
| Windscreen wiper does not clear the windscreen effectively | 1744 |
| Headlamp aim out of alignment | 1344 |
| Brake pipe excessively corroded | 667 |
| Brakes imbalanced across an axle | 531 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 463 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 434 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 377 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 363 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 313 |
| Parking brake: efficiency below requirements |3.7.B.7| | 251 |
| Registration plate issues | 215 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 195 |
| Rear brake binding | 195 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 180 |
| Driver`s seat insecure |6.2.A.1| | 178 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 163 |
| Front brake disc in such a condition that it is seriously weakened | 160 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 152 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 146 |
| Rear brake disc in such a condition that it is seriously weakened | 142 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 140 |
| Rear parking brake recording little or no effort | 140 |
| Nearside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 133 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 133 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 131 |
| Offside Front Position lamp not working |4.2.1 |a|| | 123 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 102 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 98 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 98 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 94 |
| Parking brake lever has no reserve travel |3.1.6b| | 85 |
| Front brake application uneven | 83 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 83 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 79 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 78 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 78 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 70 |
| Windscreen washer not working | 70 |
| Front brake excessively fluctuating | 67 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 61 |
| Nearside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 59 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 59 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 57 |
| Offside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 56 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 53 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 52 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 52 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 49 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 49 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 48 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 48 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 46 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 45 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 42 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 41 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 41 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 40 |
| Offside Front Driver`s seat insecure |6.2.A.1| | 40 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 39 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 38 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 37 |
| Rear brake application uneven | 37 |
| Battery insecure |1.9.1| | 37 |
| Emissions not tested (8.2.1.2 (d)) | 35 |