| Most common failures | No# failures |
|---|
| Parking brake: efficiency below requirements |3.7.B.7| | 340 |
| Brake pipe excessively corroded | 248 |
| Registration plate lamp issues | 209 |
| Windscreen wiper does not clear the windscreen effectively | 186 |
| Rear parking brake recording little or no effort | 185 |
| Headlamp aim out of alignment | 170 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 103 |
| Brakes imbalanced across an axle | 72 |
| Parking brake lever has no reserve travel |3.1.6b| | 62 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 56 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 50 |
| Registration plate issues | 41 |
| Anti-lock braking system warning lamp indicates an ABS fault | 37 |
| Rear brake binding | 31 |
| Front brake disc in such a condition that it is seriously weakened | 31 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 27 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 24 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 22 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 21 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 21 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 20 |
| Offside Stop lamp not working |1.2.1b| | 20 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 20 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 19 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 16 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 16 |
| Front brake application uneven | 16 |
| Battery insecure |1.9.1| | 15 |
| Nearside Stop lamp not working |1.2.1b| | 15 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 15 |
| Rear brake application uneven | 14 |
| Nearside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 12 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 12 |
| Rear brake disc in such a condition that it is seriously weakened | 11 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 11 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 11 |
| Service brake: efficiency below requirements |3.7.B.7| | 11 |
| Windscreen wiper blade insecure | 11 |
| Offside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 10 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 10 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 10 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 9 |
| Offside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 9 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 9 |
| Offside Rear Brake cable has wires broken and is significantly weakened |3.5.1b| | 9 |
| Nearside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 9 |
| Emissions not tested |7.0| | 8 |
| Offside Front Lower Suspension arm corroded and seriously weakened |2.4.G.1| | 8 |
| Fuel system component leaking |7.2.3| | 8 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 8 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 8 |
| Fuel tank leaking |7.2.3| | 8 |
| Nearside Headlamp not working on main beam |1.7.5a| | 8 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 7 |
| Nearside Rear Stop lamp not working |1.2.1b| | 7 |
| Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 7 |
| Nearside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 7 |
| Offside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 7 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 6 |
| Nearside front brake binding |3.7.B.1| | 6 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 6 |
| Nearside Headlamp has a product on the lens so that the light output is severely reduced |1.7.5a| | 6 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 6 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 6 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 6 |
| Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 5 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 5 |
| Offside Headlamp has a product on the lens so that the light output is severely reduced |1.7.5a| | 5 |
| Brake performance not tested |3.7.A.1| | 5 |
| Offside front brake binding |3.7.B.1| | 5 |
| Offside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 5 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 5 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 5 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 5 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 5 |
| Offside Rear Anti-roll bar rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 5 |
| Offside Rear brake caliper leaking |3.6.A.1| | 5 |
| Nearside Rear Brake cable has wires broken and is significantly weakened |3.5.1b| | 5 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 4 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 4 |
| Nearside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 4 |
| Nearside Rear Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 4 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 4 |
| Rear Mechanical brake component has restricted free movement | 4 |
| Offside Brake cable has wires broken and is significantly weakened |3.5.1b| | 4 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 4 |
| front brakes release unevenly |3.7.B.4| | 4 |
| Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 4 |
| Offside Headlamp not working on main beam |1.7.5a| | 4 |
| Nearside Front Brake pipe leaking |3.6.A.1| | 4 |