| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 447 |
| Headlamp aim out of alignment | 418 |
| Parking brake: efficiency below requirements |3.7.B.7| | 341 |
| Brake pipe excessively corroded | 311 |
| Windscreen wiper does not clear the windscreen effectively | 254 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 225 |
| Rear parking brake recording little or no effort | 201 |
| Registration plate issues | 186 |
| Horn not working |1.6.2a| | 134 |
| Parking brake lever has no reserve travel |3.1.6b| | 126 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 120 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 110 |
| Nearside Stop lamp not working |1.2.1b| | 107 |
| Offside Stop lamp not working |1.2.1b| | 91 |
| Offside Rear coil spring fractured |2.4.C.1a| | 88 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 88 |
| Nearside Rear coil spring fractured |2.4.C.1a| | 88 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 84 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 80 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 69 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 69 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 65 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 62 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 56 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 55 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 54 |
| Nearside Rear Stop lamp not working |1.2.1b| | 53 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 49 |
| Anti-lock braking system warning lamp indicates an ABS fault | 49 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 46 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 46 |
| Offside Rear fog lamp not working |1.3.2b| | 39 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 39 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 39 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 38 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 37 |
| Centre Stop lamp not working |1.2.1b| | 37 |
| Offside Rear Stop lamp not working |1.2.1b| | 36 |
| Front brake disc in such a condition that it is seriously weakened | 36 |
| Nearside Rear coil spring incomplete |2.4.C.1a| | 34 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 34 |
| Electronic stability system warning lamp indicates a fault |3.4.1c| | 33 |
| Brake hose damaged | 32 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 32 |
| Nearside Rear coil spring cracked |2.4.C.1a| | 29 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 29 |
| Offside Rear coil spring incomplete |2.4.C.1a| | 29 |
| Offside Rear coil spring broken |2.4.C.1a| | 28 |
| Nearside Rear Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 28 |
| Nearside Rear coil spring broken |2.4.C.1a| | 26 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 26 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 25 |
| Offside Rear Anti-roll bar linkage missing |2.4.G.1| | 25 |
| Nearside Rear Anti-roll bar linkage missing |2.4.G.1| | 25 |
| Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 25 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 24 |
| Offside Rear coil spring cracked |2.4.C.1a| | 22 |
| Direction indicators incorrect colour |1.4.A.2f| | 21 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 21 |
| Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 21 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 21 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 21 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 20 |
| Nearside Front Wheel bolt|s| missing |4.2.A.1e| | 20 |
| Nearside Rear Suspension arm has excessive play in a ball joint |2.4.G.2| | 19 |
| Nearside Rear Wheel bolt|s| missing |4.2.A.1e| | 19 |
| Service brake: efficiency below requirements |3.7.C.1a| | 19 |
| Brakes imbalanced across an axle | 18 |
| Windscreen has damage | 18 |
| Offside Rear Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 17 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 17 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 17 |
| Brake hose excessively deteriorated | 17 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 15 |
| Nearside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 15 |
| Offside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 15 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 15 |
| Rear Direction indicator incorrect colour |1.4.A.2f| | 15 |
| Offside front brake binding |3.7.B.1| | 14 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 14 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 14 |
| Nearside Rear Anti-roll bar missing |2.4.G.1| | 14 |
| Rear fog lamp not working |1.3.2b| | 14 |
| Offside Rear Anti-roll bar linkage insecure |2.4.G.1| | 14 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 13 |
| Brake performance not tested |3.7.A.1| | 13 |
| Windscreen wiper blade insecure | 13 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 13 |
| Offside Headlamp aim beam image kick up to the offside |1.8| | 12 |
| Offside Rear Suspension arm has excessive play in a ball joint |2.4.G.2| | 12 |
| Nearside Headlamp not working on main beam |1.7.5a| | 12 |
| Battery insecure |1.9.1| | 12 |
| Offside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 12 |
| Centre Rear Stop lamp not working |1.2.1b| | 11 |
| Offside Steering rack gaiter split |2.2.D.2d| | 11 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 11 |
| Offside Rear Wheel bolt|s| missing |4.2.A.1e| | 11 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 11 |
| Rear brake disc in such a condition that it is seriously weakened | 11 |
| Nearside Headlamp aim beam image kick up to the offside |1.8| | 10 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 10 |
| Nearside Rear Anti-roll bar linkage fractured |2.4.G.1| | 10 |
| Stop lamp not working |1.2.1b| | 10 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 10 |
| Brake pedal spongy |3.3.B.1b| | 10 |
| Rear fog lamp tell tale not working |1.3.1b| | 10 |
| Nearside Rear Anti-roll bar linkage insecure |2.4.G.1| | 10 |
| Horn not loud enough to be heard by another road user |1.6.2b| | 10 |
| Nearside Front Wheel stud|s| missing |4.2.A.1e| | 9 |
| Offside Headlamp not working on main beam |1.7.5a| | 9 |
| Offside Front Wheel bolt|s| missing |4.2.A.1e| | 9 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 9 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 9 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 9 |
| Front Direction indicator incorrect colour |1.4.A.2f| | 9 |
| Service brake: efficiency below requirements |3.7.B.7| | 9 |
| Power steering component|s| leaking |2.3.3b| | 9 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 9 |
| Offside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 9 |
| Nearside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 8 |
| Nearside front brake binding |3.7.B.1| | 8 |
| Nearside Front Lower Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 8 |
| Nearside Rear Wheel stud|s| missing |4.2.A.1e| | 8 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 8 |
| Front Direction indicators incorrect colour |1.4.A.2f| | 8 |
| Parking brake: efficiency below requirements |3.7.D.4| | 8 |
| Emissions not tested |7.0| | 8 |
| Nearside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 8 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 8 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 8 |
| Power steering pipe|s| or hose|s| leaking |2.3.3b| | 8 |
| Offside Front Anti-roll bar rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 8 |
| Nearside Rear Seat belt has a cut which has significantly weakened the webbing |5.2.2a| | 8 |
| Offside Rear Anti-roll bar missing |2.4.G.1| | 8 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 8 |
| Rear Stop lamp not working |1.2.1b| | 8 |
| Brake pedal creeps down when held under pressure |3.3.B.1a| | 8 |