| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 270 |
| Brake pipe excessively corroded | 254 |
| Headlamp aim out of alignment | 208 |
| Registration plate lamp issues | 113 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 69 |
| Parking brake lever has no reserve travel |3.1.6b| | 64 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 43 |
| Front brake disc in such a condition that it is seriously weakened | 43 |
| Registration plate issues | 41 |
| Rear brake disc in such a condition that it is seriously weakened | 41 |
| Parking brake: efficiency below requirements |3.7.B.7| | 36 |
| Nearside Stop lamp not working |1.2.1b| | 29 |
| Offside Stop lamp not working |1.2.1b| | 28 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 25 |
| Brakes imbalanced across an axle | 24 |
| Rear brake binding | 19 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 19 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 18 |
| Service brake: efficiency below requirements |3.7.B.7| | 18 |
| Battery insecure |1.9.1| | 18 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 14 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 13 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 12 |
| Nearside Rear Stop lamp not working |1.2.1b| | 12 |
| Offside Rear fog lamp not working |1.3.2b| | 12 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 11 |
| Anti-lock braking system warning lamp indicates an ABS fault | 11 |
| Nearside Front Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 11 |
| Offside Rear Brake pipe leaking |3.6.A.1| | 11 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 11 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 10 |
| Offside Front Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 10 |
| Offside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 10 |
| Rear parking brake recording little or no effort | 10 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 9 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 9 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 9 |
| Windscreen wiper blade insecure | 9 |
| Windscreen washer not working | 9 |
| Windscreen has damage | 8 |
| Nearside Outer Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 8 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 8 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 8 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 8 |
| Nearside Rear Upper Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 8 |
| Offside Rear Stop lamp not working |1.2.1b| | 8 |
| Rear fog lamp not working |1.3.2b| | 8 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 7 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 7 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 7 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 7 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 7 |
| Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 7 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 7 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 7 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 7 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 7 |
| Offside Outer Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 7 |
| Horn not working |1.6.2a| | 7 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 6 |
| Offside Front Position lamp not working |4.2.1 |a|| | 6 |
| Rear Brake cable insecure | 6 |
| Rear fog lamp tell tale not working |1.3.1b| | 6 |
| Nearside Front Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 6 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 6 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 6 |
| Rear brake application uneven | 6 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 6 |
| Front brake application uneven | 5 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Offside Rear Upper Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 5 |
| Offside Rear Shock absorbers has a serious fluid leak | 5 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 5 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 5 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 5 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 5 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 5 |
| Offside Front Anti-lock braking system component excessively damaged |3.4.2| | 5 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 5 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 5 |