| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 1845 |
| Windscreen wiper does not clear the windscreen effectively | 1251 |
| Headlamp aim out of alignment | 1020 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 335 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 333 |
| Brake pipe excessively corroded | 307 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 302 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 286 |
| Registration plate issues | 173 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 168 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 158 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 158 |
| Parking brake: efficiency below requirements |3.7.B.7| | 146 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 123 |
| Brakes imbalanced across an axle | 120 |
| Parking brake lever has no reserve travel |3.1.6b| | 109 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 108 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 105 |
| Offside Front Position lamp not working |4.2.1 |a|| | 104 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 97 |
| Rear brake disc in such a condition that it is seriously weakened | 84 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 78 |
| Front brake disc in such a condition that it is seriously weakened | 78 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 78 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 74 |
| Rear brake binding | 72 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 64 |
| Windscreen washer not working | 64 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 59 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 57 |
| Offside Front Shock absorbers has a serious fluid leak | 54 |
| Anti-lock braking system warning lamp indicates an ABS fault | 53 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 51 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 51 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 51 |
| Nearside Front Shock absorbers has a serious fluid leak | 50 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 49 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 49 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 47 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 46 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 46 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 44 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 43 |
| Rear parking brake recording little or no effort | 40 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 40 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 38 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 36 |
| Offside Headlamp light intensity severely reduced (4.1.4 (a)) | 35 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 32 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 29 |
| Offside Front Headlamp light intensity severely reduced (4.1.4 (a)) | 29 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 28 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 28 |
| Nearside Headlamp light intensity severely reduced (4.1.4 (a)) | 28 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 27 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 27 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 26 |
| Windscreen has damage | 26 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 25 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 25 |
| Nearside Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 24 |
| Offside Side repeater not working |1.4.A.2c| | 24 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 24 |