| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 704 |
| Registration plate lamp issues | 543 |
| Headlamp aim out of alignment | 304 |
| Brake pipe excessively corroded | 198 |
| Nearside Stop lamp not working |1.2.1b| | 144 |
| Offside Stop lamp not working |1.2.1b| | 130 |
| Registration plate issues | 125 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 119 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 98 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 88 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 85 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 83 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 73 |
| Brakes imbalanced across an axle | 72 |
| Anti-lock braking system warning lamp indicates an ABS fault | 65 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 61 |
| Offside Rear Stop lamp not working |1.2.1b| | 59 |
| Nearside Rear Stop lamp not working |1.2.1b| | 56 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 43 |
| Windscreen wiper blade insecure | 34 |
| Rear brake binding | 34 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 33 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 32 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 32 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 31 |
| Offside Rear Anti-roll bar linkage fractured |2.4.G.1| | 31 |
| Parking brake lever has no reserve travel |3.1.6b| | 31 |
| Offside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 31 |
| Nearside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 29 |
| Front brake application uneven | 29 |
| Windscreen has damage | 26 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 23 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 23 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 22 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 22 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 21 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 21 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 20 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 19 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 19 |
| Parking brake: efficiency below requirements |3.7.B.7| | 18 |
| Offside Headlamp aim beam image kick up to the offside |1.8| | 18 |
| Front brake excessively fluctuating | 17 |
| Emissions not tested |7.0| | 17 |
| Nearside Headlamp aim beam image kick up to the offside |1.8| | 15 |
| Nearside front brake juddering severely |3.7.A.2b| | 15 |
| Offside Rear Anti-roll bar linkage insecure |2.4.G.1| | 15 |
| 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| | 14 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 14 |
| Front brake disc in such a condition that it is seriously weakened | 14 |
| Offside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 14 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 14 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 13 |
| Battery insecure |1.9.1| | 13 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 12 |
| Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 12 |
| Rear brake disc in such a condition that it is seriously weakened | 12 |
| Nearside Rear Anti-roll bar linkage fractured |2.4.G.1| | 12 |
| Nearside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 12 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 12 |
| 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| | 12 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 12 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 11 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 11 |
| Offside 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| | 11 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 11 |
| Nearside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 11 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 11 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 11 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 11 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 10 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 10 |
| 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| | 10 |
| Offside front brake binding |3.7.B.1| | 10 |
| Rear brake application uneven | 10 |
| Nearside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 10 |
| Offside Front coil spring broken |2.4.C.1a| | 10 |
| Power steering inoperative |2.3.3a| | 10 |
| Offside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 10 |
| Offside front brake juddering severely |3.7.A.2b| | 10 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 10 |
| Nearside Rear coil spring broken |2.4.C.1a| | 9 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 9 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 9 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 9 |