| Most common failures | No# failures |
|---|
| Parking brake: efficiency below requirements |3.7.B.7| | 885 |
| Rear parking brake recording little or no effort | 587 |
| Registration plate lamp issues | 509 |
| Windscreen wiper does not clear the windscreen effectively | 441 |
| Headlamp aim out of alignment | 406 |
| Brake pipe excessively corroded | 211 |
| Anti-lock braking system warning lamp indicates an ABS fault | 203 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 201 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 185 |
| Rear brake binding | 155 |
| Nearside Stop lamp not working |1.2.1b| | 120 |
| Registration plate issues | 113 |
| Offside Stop lamp not working |1.2.1b| | 112 |
| Front brake disc in such a condition that it is seriously weakened | 110 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 74 |
| Brakes imbalanced across an axle | 69 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 68 |
| Centre Stop lamp not working |1.2.1b| | 68 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 67 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 59 |
| Parking brake lever has no reserve travel |3.1.6b| | 57 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 53 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 52 |
| Battery insecure |1.9.1| | 49 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 49 |
| Nearside Rear Stop lamp not working |1.2.1b| | 46 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 40 |
| Service brake: efficiency below requirements |3.7.B.7| | 40 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 39 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 36 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 34 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 33 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 33 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 32 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 31 |
| Offside Rear Stop lamp not working |1.2.1b| | 30 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 30 |
| Rear Mechanical brake component has restricted free movement | 29 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 29 |
| Windscreen wiper blade insecure | 28 |
| Emissions not tested |7.0| | 28 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 28 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 28 |
| Horn not working |1.6.2a| | 27 |
| Stop lamp not working |1.2.1b| | 27 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 27 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 25 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 25 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 23 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 20 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 20 |
| Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 20 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 18 |
| Rear fog lamp tell tale not working |1.3.1b| | 18 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 17 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 17 |
| Offside Front brake disc excessively pitted |3.5.1h| | 17 |
| Nearside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 17 |
| Front brake application uneven | 17 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 16 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 16 |
| Brake hose excessively deteriorated | 15 |
| Windscreen has damage | 15 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 15 |
| Nearside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 15 |
| Nearside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 14 |
| Nearside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 14 |
| Offside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 14 |
| Nearside Headlamp not working on main beam |1.7.5a| | 14 |
| Offside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 14 |
| Centre Rear Stop lamp not working |1.2.1b| | 13 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 13 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 13 |
| Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 12 |
| Rear brake application uneven | 12 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 12 |
| Offside Rear fog lamp not working |1.3.2b| | 12 |
| Front brake disc excessively pitted |3.5.1h| | 12 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 12 |
| Parking brake lever ratchet mechanism is excessively worn |3.1.5| | 12 |
| Offside Headlamp not working on main beam |1.7.5a| | 12 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 12 |
| Offside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 12 |
| Offside Side repeater not working |1.4.A.2c| | 11 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 11 |
| Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 11 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 11 |
| Offside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 11 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 11 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 10 |
| Nearside Front Windscreen wiper blade deteriorated |8.2.2| | 10 |
| Front position lamp|s| not working |1.1.A.3b| | 10 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 10 |
| Nearside Side repeater not working |1.4.A.2c| | 10 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 10 |
| Nearside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 10 |
| rear parking |secondary| brakes imbalanced | 10 |
| Offside Obligatory mirror insecure |8.1.1| | 10 |
| Nearside Front Anti-roll bar linkage insecure |2.4.G.1| | 9 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 9 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 9 |
| Nearside Front Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 9 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 9 |
| Offside Front Steering arm has relative movement at its fixings |2.2.B.1h| | 9 |
| 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| | 9 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 9 |