| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 532 |
| Registration plate lamp issues | 401 |
| Headlamp aim out of alignment | 367 |
| Brake pipe excessively corroded | 155 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 130 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 112 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 71 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 60 |
| Nearside Stop lamp not working |1.2.1b| | 57 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 52 |
| Registration plate issues | 50 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 47 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 47 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 45 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 43 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 42 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 36 |
| Horn not working (7.7 (a)) | 36 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 36 |
| Offside Stop lamp not working |1.2.1b| | 36 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 36 |
| Brakes imbalanced across an axle | 34 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 34 |
| Horn not working (7.7 (a) (ii)) | 33 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 33 |
| Nearside Front Shock absorbers has a serious fluid leak | 32 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 31 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 31 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 30 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 30 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 29 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 29 |
| Offside Front Position lamp not working |4.2.1 |a|| | 29 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 29 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 24 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 24 |
| Front brake disc in such a condition that it is seriously weakened | 24 |
| Nearside Side repeater not working |1.4.A.2c| | 23 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 23 |
| Rear brake disc in such a condition that it is seriously weakened | 22 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 22 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 22 |
| Nearside Rear Rear position lamp|s| not working |1.1.A.3b| | 21 |
| Nearside Rear Stop lamp not working |1.2.1b| | 20 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 20 |
| Horn not working |7.7 |a| |ii|| | 19 |
| Horn not working |1.6.2a| | 19 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 19 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 18 |
| Offside Side repeater not working |1.4.A.2c| | 18 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 18 |
| Parking brake: efficiency below requirements |3.7.B.7| | 17 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 17 |
| Rear brake binding | 17 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 16 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 16 |
| Offside Rear Stop lamp not working |1.2.1b| | 16 |
| Offside Front Shock absorbers has a serious fluid leak | 16 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 15 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 14 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 13 |
| Windscreen washer not working | 13 |
| Offside Rear Stop lamp|s| not working |4.3.1 |a| |ii|| | 13 |
| Nearside Side repeater not working |4.4.1 |a| |ii|| | 12 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 12 |
| Front brake excessively fluctuating | 12 |
| Nearside Rear Shock absorbers has a serious fluid leak | 12 |
| Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 11 |
| Nearside Front Side repeater not working (4.4.1 (a) (ii)) | 11 |
| Nearside Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 11 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 11 |
| Offside Rear Shock absorbers has a serious fluid leak | 11 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 10 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 10 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 9 |
| Offside Side repeater not working |4.4.1 |a| |ii|| | 9 |
| Offside Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 9 |
| Offside Rear Rear position lamp|s| not working |1.1.A.3b| | 9 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 8 |
| Rear Exhaust system insecure (6.1.2 (a)) | 8 |