| Most common failures | No# failures |
|---|
| Parking brake: efficiency below requirements |3.7.B.7| | 655 |
| Brake pipe excessively corroded | 557 |
| Registration plate lamp issues | 540 |
| Windscreen wiper does not clear the windscreen effectively | 477 |
| Headlamp aim out of alignment | 448 |
| Rear parking brake recording little or no effort | 402 |
| Brakes imbalanced across an axle | 139 |
| Registration plate issues | 130 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 115 |
| Parking brake lever has no reserve travel |3.1.6b| | 109 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 91 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 88 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 74 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 70 |
| Rear brake binding | 65 |
| Offside Stop lamp not working |1.2.1b| | 60 |
| Nearside Stop lamp not working |1.2.1b| | 49 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 47 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 46 |
| Battery insecure |1.9.1| | 46 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 43 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 38 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 37 |
| Anti-lock braking system warning lamp indicates an ABS fault | 35 |
| Rear brake disc in such a condition that it is seriously weakened | 34 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 34 |
| Front brake disc in such a condition that it is seriously weakened | 34 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 32 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 31 |
| Rear brake application uneven | 31 |
| Front brake application uneven | 28 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 26 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 26 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 25 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 25 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 25 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 24 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 24 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 24 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 24 |
| Nearside Rear Stop lamp not working |1.2.1b| | 23 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 23 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 22 |
| Power steering pipe|s| or hose|s| leaking |2.3.3b| | 22 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 21 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 20 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 20 |
| Windscreen has damage | 20 |
| Windscreen wiper blade insecure | 20 |
| Service brake: efficiency below requirements |3.7.B.7| | 20 |
| 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| | 20 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 19 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 19 |
| Offside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 19 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 17 |
| Offside Rear brake caliper has restricted free movement |3.5.1k| | 17 |
| 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| | 16 |
| Offside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 15 |
| 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| | 15 |
| Nearside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 15 |
| Nearside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 15 |
| Offside front brake binding |3.7.B.1| | 14 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 14 |
| Nearside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 14 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 13 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 13 |
| Rear Mechanical brake component has restricted free movement | 13 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 13 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 13 |
| Power steering pipe|s| or hose|s| leaking from a joint |2.3.3b| | 13 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 12 |
| Offside Rear Stop lamp not working |1.2.1b| | 11 |
| Offside Front Suspension arm corroded and seriously weakened |2.4.G.1| | 11 |
| Offside Rear Brake cable has wires broken and is significantly weakened |3.5.1b| | 11 |
| Nearside Headlamp not working on main beam |1.7.5a| | 11 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 10 |
| Offside Rear Anti-roll bar rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 10 |
| Nearside Rear Brake cable has wires broken and is significantly weakened |3.5.1b| | 10 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 9 |
| Brake pedal spongy |3.3.B.1b| | 9 |
| Nearside Brake cable has wires broken and is significantly weakened |3.5.1b| | 9 |
| Offside Brake cable has wires broken and is significantly weakened |3.5.1b| | 9 |
| Nearside front brake binding |3.7.B.1| | 9 |
| Offside Headlamp not working on main beam |1.7.5a| | 8 |
| Nearside Front Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 8 |
| Rear fog lamp not working |1.3.2b| | 8 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 8 |
| Offside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 8 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 8 |
| Nearside Front constant velocity joint gaiter insecurely mounted to its housing |2.5.C.1a| | 8 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 8 |
| rear parking |secondary| brakes imbalanced | 8 |
| Offside Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 8 |
| Emissions not tested |7.0| | 8 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 8 |