| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 769 |
| Registration plate lamp issues | 481 |
| Headlamp aim out of alignment | 477 |
| Brake pipe excessively corroded | 234 |
| Horn not working (7.7 (a) (ii)) | 191 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 182 |
| Horn not working (7.7 (a)) | 151 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 142 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 133 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 114 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 109 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 103 |
| Horn not working |1.6.2a| | 92 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 87 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 70 |
| Horn not working |7.7 |a| |ii|| | 59 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 56 |
| Registration plate issues | 56 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 55 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 52 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 51 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 50 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 45 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 40 |
| Offside Front Position lamp not working |4.2.1 |a|| | 37 |
| Nearside Rear Rear position lamp|s| not working |1.1.A.3b| | 34 |
| Offside Rear Rear position lamp|s| not working |1.1.A.3b| | 34 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 32 |
| Front brake disc in such a condition that it is seriously weakened | 29 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 28 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 28 |
| Windscreen washer not working | 27 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 24 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 23 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 23 |
| Brakes imbalanced across an axle | 22 |
| Rear brake disc in such a condition that it is seriously weakened | 21 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 20 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 20 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 19 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 19 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 18 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 17 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 17 |
| Parking brake lever has no reserve travel |3.1.6b| | 17 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 17 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 15 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 14 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 12 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 12 |
| Anti-lock braking system warning lamp indicates an ABS fault | 12 |
| Nearside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 12 |
| Parking brake: efficiency below requirements |3.7.B.7| | 12 |
| Rear fog lamp not working |1.3.2b| | 11 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 11 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 11 |
| Nearside Rear Position lamp with a multiple light source more than 1/2 not functioning (4.2.1 (a) (ii)) | 11 |