| Most common failures | No# failures |
|---|
| Parking brake: efficiency below requirements |3.7.B.7| | 527 |
| Headlamp aim out of alignment | 483 |
| Windscreen wiper does not clear the windscreen effectively | 339 |
| Brake pipe excessively corroded | 327 |
| Rear parking brake recording little or no effort | 291 |
| Service brake: efficiency below requirements |3.7.B.7| | 178 |
| Registration plate lamp issues | 172 |
| Horn not working |1.6.2a| | 169 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 130 |
| Nearside Stop lamp not working |1.2.1b| | 119 |
| Parking brake lever has no reserve travel |3.1.6b| | 112 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 108 |
| Brakes imbalanced across an axle | 99 |
| Registration plate issues | 94 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 93 |
| Offside Stop lamp not working |1.2.1b| | 89 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 75 |
| Centre Stop lamp not working |1.2.1b| | 72 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 65 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 62 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 61 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 61 |
| Rear brake application uneven | 60 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 60 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 58 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 54 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 51 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 50 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 48 |
| Offside Headlamp not working on main beam |1.7.5a| | 46 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 45 |
| Emissions not tested |7.0| | 45 |
| Rear brake binding | 44 |
| Offside Side repeater not working |1.4.A.2c| | 44 |
| Brake pedal spongy |3.3.B.1b| | 43 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 43 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 42 |
| Nearside Rear Stop lamp not working |1.2.1b| | 39 |
| Offside Rear Stop lamp not working |1.2.1b| | 36 |
| Front brake disc in such a condition that it is seriously weakened | 35 |
| Nearside Side repeater not working |1.4.A.2c| | 34 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 34 |
| Nearside Headlamp not working on main beam |1.7.5a| | 32 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 31 |
| Nearside Front Wheel nut|s| missing |4.2.A.1e| | 31 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 30 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 29 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 29 |
| Offside Rear Wheel nut|s| missing |4.2.A.1e| | 28 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 28 |
| Battery insecure |1.9.1| | 27 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 25 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 25 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 24 |
| Brake pedal creeps down when held under pressure |3.3.B.1a| | 24 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 24 |
| Brake hose excessively deteriorated | 24 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 24 |
| Rear Exhaust system not adequately supported |7.1.1| | 23 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 23 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 22 |
| Nearside Rear Wheel nut|s| missing |4.2.A.1e| | 19 |
| Windscreen has damage | 19 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 19 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 18 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 18 |
| Offside Rear fog lamp not working |1.3.2b| | 17 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 17 |
| Front brake application uneven | 17 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 16 |
| Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 16 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 16 |
| Offside Front Anti-roll bar linkage insecure |2.4.G.1| | 16 |
| Stop lamp remains on when the brakes are released | 16 |
| Windscreen wiper blade insecure | 16 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 15 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 15 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 15 |
| Stop lamp not working |1.2.1b| | 15 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 15 |
| Brake pedal has insufficient reserve movement |3.3.A.5| | 15 |
| Anti-lock braking system warning lamp indicates an ABS fault | 15 |
| Nearside Front Headlamp not working on main beam |1.7.5a| | 14 |
| Exhaust system not adequately supported |7.1.1| | 14 |
| Nearside Headlamp insecure |1.7.3| | 14 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 14 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 14 |
| Brake pedal creeps down while the pedal is held under pressure |3.3.B.1a| | 14 |
| Offside Obligatory mirror insecure |8.1.1| | 14 |
| Centre Rear Stop lamp not working |1.2.1b| | 14 |
| Offside Front Side repeater not working |1.4.A.2c| | 13 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 13 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 12 |
| Brake hydraulic reservoir fluid level below minimum level |3.6.G.1b| | 12 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 12 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 12 |
| Nearside Front Side repeater not working |1.4.A.2c| | 12 |
| Power steering pipe|s| or hose|s| leaking |2.3.3b| | 11 |
| Power steering component|s| leaking |2.3.3b| | 11 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 11 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 11 |
| Offside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 11 |
| Rear fog lamp tell tale not working |1.3.1b| | 11 |
| Centre Exhaust has part of the system excessively deteriorated |7.1.1a| | 11 |
| Centre Rear Exhaust has a major leak of exhaust gases |7.1.2| | 11 |
| Nearside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 10 |
| Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 10 |
| Brake performance not tested |3.7.A.1| | 10 |
| Offside Front Anti-roll bar linkage fractured |2.4.G.1| | 10 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 10 |
| Offside Headlamp aim not tested |1.8.A.1c| | 10 |
| Centre Exhaust system not adequately supported |7.1.1| | 9 |
| Nearside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 9 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 9 |
| Offside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 9 |
| Nearside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 9 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 9 |
| Offside Steering rack gaiter split |2.2.D.2d| | 9 |
| Upper Stop lamp not working |1.2.1b| | 9 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 9 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 9 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 9 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 8 |
| Nearside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 8 |
| Offside Headlamp excessively damaged so that the light output is severely reduced |1.7.5a| | 8 |
| Nearside Front Anti-roll bar linkage insecure |2.4.G.1| | 8 |
| Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 8 |
| Nearside Rear Braking system leaking |3.6.A.1| | 8 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 8 |
| Brake servo leaking |3.6.C.1c| | 8 |
| Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 8 |
| Front brake disc excessively pitted |3.5.1h| | 8 |
| Nearside Rear Brake valve leaking |3.6.A.1| | 8 |
| Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 8 |
| Offside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 7 |
| Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 7 |
| Nearside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 7 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 7 |
| Nearside Front brake disc excessively scored |3.5.1h| | 7 |
| Offside Indicator tell tale inoperative |1.4.A.2a| | 7 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 7 |
| Brake pedal creeps down under servo assistance and touches the floor |3.3.C.3| | 7 |
| Nearside Front Front constant velocity joint gaiter split |2.5.C.1a| | 7 |
| Nearside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 7 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 7 |
| Nearside Steering rack gaiter split |2.2.D.2d| | 7 |
| Braking system leaking |3.6.A.1| | 7 |