| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 2103 |
| Headlamp aim out of alignment | 1351 |
| Brake pipe excessively corroded | 772 |
| Registration plate lamp issues | 658 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 228 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 215 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 205 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 170 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 150 |
| Registration plate issues | 149 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 129 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 121 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 118 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 113 |
| Front brake disc in such a condition that it is seriously weakened | 104 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 103 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 103 |
| Brakes imbalanced across an axle | 99 |
| Horn not working (7.7 (a) (ii)) | 94 |
| Horn not working (7.7 (a)) | 89 |
| Nearside Stop lamp not working |1.2.1b| | 87 |
| Offside Stop lamp not working |1.2.1b| | 74 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 68 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 67 |
| Nearside Front Shock absorbers has a serious fluid leak | 60 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 54 |
| Parking brake: efficiency below requirements |3.7.B.7| | 54 |
| Nearside Side repeater not working |1.4.A.2c| | 51 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 50 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 49 |
| Offside Front Shock absorbers has a serious fluid leak | 47 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 46 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 44 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 44 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 43 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 43 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 43 |
| Front brake excessively fluctuating | 42 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 41 |
| Nearside Rear Stop lamp not working |1.2.1b| | 41 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 40 |
| Rear brake disc in such a condition that it is seriously weakened | 37 |
| Nearside Front Side repeater not working (4.4.1 (a) (ii)) | 37 |
| Windscreen washer not working | 37 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 33 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 33 |
| Offside Front Side repeater not working (4.4.1 (a) (ii)) | 33 |
| Offside Rear Stop lamp not working |1.2.1b| | 32 |
| Rear brake binding | 31 |
| Horn not working |1.6.2a| | 31 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 31 |
| Offside Side repeater not working |4.4.1 |a| |ii|| | 30 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 30 |
| Nearside Side repeater not working |4.4.1 |a| |ii|| | 29 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 28 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 27 |
| Offside Front Position lamp not working |4.2.1 |a|| | 27 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 26 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 26 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 26 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 26 |
| Offside Side repeater not working |1.4.A.2c| | 26 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 26 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 25 |
| Nearside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 25 |
| Offside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 24 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 24 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 23 |
| Rear parking brake recording little or no effort | 23 |