| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 1150 |
| Windscreen wiper does not clear the windscreen effectively | 968 |
| Registration plate lamp issues | 449 |
| Brake pipe excessively corroded | 210 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 150 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 141 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 134 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 106 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 87 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 86 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 79 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 76 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 69 |
| Windscreen washer not working | 69 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 58 |
| Registration plate issues | 57 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 54 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 51 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 46 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 42 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 39 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 39 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 37 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 37 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 35 |
| Front brake disc in such a condition that it is seriously weakened | 34 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 31 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 31 |
| Offside Rear Rear position lamp|s| not working |1.1.A.3b| | 31 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 31 |
| Brakes imbalanced across an axle | 31 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 31 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 31 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 30 |
| Offside Front Position lamp not working |4.2.1 |a|| | 29 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 29 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 26 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 24 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 24 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 23 |
| Horn not working (7.7 (a) (ii)) | 23 |
| Nearside Rear Rear position lamp|s| not working |1.1.A.3b| | 23 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 23 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 23 |
| Horn not working (7.7 (a)) | 22 |
| Rear brake disc in such a condition that it is seriously weakened | 22 |
| Windscreen has damage | 21 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 21 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 20 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 19 |
| Horn not working |1.6.2a| | 18 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 18 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 17 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 17 |
| Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 17 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 17 |
| Parking brake lever has no reserve travel |3.1.6b| | 16 |
| Nearside Stop lamp not working |1.2.1b| | 15 |
| Windscreen wiper blade insecure | 15 |
| Parking brake: efficiency below requirements |3.7.B.7| | 14 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 14 |
| Offside Rear Shock absorbers has a serious fluid leak | 14 |
| Offside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 13 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 12 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 12 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 12 |
| Nearside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 12 |
| Anti-lock braking system warning lamp indicates an ABS fault | 12 |