| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 377 |
| Headlamp aim out of alignment | 242 |
| Registration plate issues | 101 |
| Registration plate lamp issues | 92 |
| Brakes imbalanced across an axle | 67 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 65 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 49 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 32 |
| Rear brake disc in such a condition that it is seriously weakened | 30 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 27 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 25 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 24 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 21 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 21 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 20 |
| 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 Front position lamp|s| not working |1.1.A.3b| | 18 |
| Front brake disc in such a condition that it is seriously weakened | 18 |
| Offside Front Position lamp not working |4.2.1 |a|| | 17 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 17 |
| Brake pipe excessively corroded | 15 |
| Windscreen has damage | 14 |
| Rear brake binding | 14 |
| Nearside Front Shock absorbers has a serious fluid leak | 14 |
| Offside Front Shock absorbers has a serious fluid leak | 13 |
| Parking brake lever has no reserve travel |3.1.6b| | 13 |
| Nearside Rear brake caliper has restricted free movement |3.5.1k| | 12 |
| Offside Rear brake caliper has restricted free movement |3.5.1k| | 12 |
| Rear brake application uneven | 12 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 11 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 11 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 11 |
| Parking brake: efficiency below requirements |3.7.B.7| | 10 |
| Front brake application uneven | 10 |
| Nearside Rear Shock absorbers has a serious fluid leak | 10 |
| Rear Mechanical brake component has restricted free movement | 9 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 9 |
| Rear parking brake recording little or no effort | 8 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 8 |
| Service brake: efficiency below requirements |3.7.B.7| | 8 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 8 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 8 |
| Windscreen washer not working | 8 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 8 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 7 |
| Offside Rear Shock absorbers has a serious fluid leak | 7 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 7 |
| Front brake excessively fluctuating | 6 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 6 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 6 |
| Offside Rear fog lamp not working |1.3.2b| | 5 |
| Offside Headlamp cleaning device inoperative |1.7.2| | 5 |
| Nearside Headlamp cleaning device inoperative |1.7.2| | 5 |
| Offside rear brake excessively fluctuating |3.7.B.3| | 5 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 5 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Offside Front Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 5 |
| Nearside Rear Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |