| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 243 |
| Parking brake: efficiency below requirements |3.7.B.7| | 221 |
| Headlamp aim out of alignment | 163 |
| Windscreen wiper does not clear the windscreen effectively | 139 |
| Rear parking brake recording little or no effort | 136 |
| Brake pipe excessively corroded | 113 |
| Brakes imbalanced across an axle | 65 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 54 |
| Registration plate issues | 42 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 41 |
| Parking brake lever has no reserve travel |3.1.6b| | 39 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 38 |
| Rear brake binding | 36 |
| Anti-lock braking system warning lamp indicates an ABS fault | 34 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 25 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 24 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 24 |
| Rear brake disc in such a condition that it is seriously weakened | 24 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 23 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 20 |
| Battery insecure |1.9.1| | 19 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 18 |
| Front brake disc in such a condition that it is seriously weakened | 17 |
| Rear brake application uneven | 15 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 15 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 14 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 13 |
| Front brake application uneven | 12 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 11 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 11 |
| Offside Stop lamp not working |1.2.1b| | 10 |
| Nearside Stop lamp not working |1.2.1b| | 10 |
| Offside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 10 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 9 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 8 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 8 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 8 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 8 |
| Nearside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 8 |
| Windscreen has damage | 8 |
| Offside Rear Stop lamp not working |1.2.1b| | 7 |
| Offside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 7 |
| Offside front brake binding |3.7.B.1| | 7 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 7 |
| Nearside Headlamp not working on main beam |1.7.5a| | 7 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 7 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 7 |
| Service brake: efficiency below requirements |3.7.B.7| | 6 |
| Nearside Rear Anti-roll bar rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 6 |
| Offside Rear Anti-roll bar rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 6 |
| Bonnet retaining device ineffective |8.4.2| | 6 |
| Nearside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 6 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 6 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 6 |
| Offside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 6 |
| Nearside Rear Stop lamp not working |1.2.1b| | 5 |
| Offside Rear Rear wheel bearing rough when rotated |2.6.1| | 5 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 5 |
| Offside Front Seat belt stitching badly frayed |5.2.2b| | 5 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 5 |
| Windscreen wiper blade insecure | 5 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 5 |
| Nearside Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 5 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 5 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 5 |
| Offside Front front brake binding |3.7.B.1| | 5 |
| Front position lamp|s| not working |1.1.A.3b| | 4 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 4 |
| Nearside front brake binding |3.7.B.1| | 4 |
| Fuel system component leaking |7.2.3| | 4 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 4 |
| Offside Headlamp not working on main beam |1.7.5a| | 4 |
| Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 4 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 4 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 4 |
| Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 4 |
| Nearside Front front brake binding |3.7.B.1| | 4 |
| Offside Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 4 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 4 |
| Offside Front Seat belt damaged sufficient to obstruct correct operation of the belt |5.2.2a| | 4 |
| Rear Mechanical brake component has restricted free movement | 4 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 3 |
| Offside Rear fog lamp not working |1.3.2b| | 3 |
| Offside Rear brake disc excessively scored |3.5.1h| | 3 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 3 |
| Offside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 3 |
| Offside Rear Brake cable has wires broken and is significantly weakened |3.5.1b| | 3 |
| Mechanical brake component has restricted free movement | 3 |
| Exhaust emits an excessive level of metered smoke for a non-turbo charged engine |7.4.B.3b| | 3 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 3 |
| Emissions not tested |7.0| | 3 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 3 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 3 |
| Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 3 |
| Offside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 3 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 3 |
| Nearside Front Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 3 |
| Offside Front Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 3 |
| Nearside Front Front constant velocity joint gaiter split |2.5.C.1a| | 3 |
| Power steering fluid level below minimum |2.3.1| | 3 |
| Offside Front wheel bearing rough when rotated |2.5.A.2| | 3 |