| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 835 |
| Windscreen wiper does not clear the windscreen effectively | 826 |
| Headlamp aim out of alignment | 459 |
| Brake pipe excessively corroded | 351 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 209 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 203 |
| Offside Stop lamp not working |1.2.1b| | 201 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 199 |
| Nearside Stop lamp not working |1.2.1b| | 185 |
| Registration plate issues | 156 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 152 |
| Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 133 |
| Brakes imbalanced across an axle | 101 |
| Offside Rear Stop lamp not working |1.2.1b| | 79 |
| Parking brake lever has no reserve travel |3.1.6b| | 68 |
| Nearside Rear Stop lamp not working |1.2.1b| | 64 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 62 |
| Nearside Front Anti-roll bar linkage rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 57 |
| Offside Front Anti-roll bar linkage rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 56 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 53 |
| Windscreen has damage | 53 |
| Nearside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 51 |
| Nearside Front Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 50 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 47 |
| Offside Front Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 47 |
| Offside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 46 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 45 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 43 |
| Horn not working |1.6.2a| | 43 |
| Nearside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 42 |
| Offside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 37 |
| Parking brake: efficiency below requirements |3.7.B.7| | 36 |
| Service brake: efficiency below requirements |3.7.B.7| | 34 |
| Offside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 33 |
| Battery insecure |1.9.1| | 32 |
| Nearside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 32 |
| Brake hose excessively deteriorated | 31 |
| Front brake application uneven | 31 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 31 |
| Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 30 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 28 |
| Centre Stop lamp not working |1.2.1b| | 28 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 27 |
| Offside Rear fog lamp not working |1.3.2b| | 24 |
| Exhaust emissions exceed level of metered smoke for a turbo charged engine (8.2.2.2 (b)) | 24 |
| Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 24 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 23 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 23 |
| Windscreen washer not working | 23 |
| Nearside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 22 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 22 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 22 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 22 |
| Rear brake application uneven | 22 |
| Anti-lock braking system warning lamp indicates an ABS fault | 21 |
| Brake pedal anti-slip provision missing |3.3.A.1b| | 21 |
| Exhaust emits an excessive level of metered smoke for a non-turbo charged engine |7.4.B.3b| | 21 |
| Windscreen wiper blade insecure | 20 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 19 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 18 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn |5.3.4 |a| |i|| | 18 |
| Rear brake binding | 18 |
| Offside Front Position lamp not working |4.2.1 |a|| | 17 |
| Rear parking brake recording little or no effort | 17 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 17 |
| Nearside Front Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 15 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn |5.3.4 |a| |i|| | 15 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 15 |
| Stop lamp not working |1.2.1b| | 15 |
| Rear fog lamp not working |1.3.2b| | 15 |
| Offside Front Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 14 |
| Emissions not tested |7.0| | 14 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 14 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 14 |
| Offside Obligatory mirror insecure |8.1.1| | 14 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 14 |
| Nearside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 14 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 14 |
| Offside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 14 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 13 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 13 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 13 |
| Exhaust emits excessive smoke or vapour likely to obscure the vision of other road users (8.2.2.2 (c)) | 13 |
| Front brake excessively fluctuating | 12 |
| Rear fog lamp tell tale not working |1.3.1b| | 12 |
| Front position lamp|s| not working |1.1.A.3b| | 11 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Nearside Rear Stop lamp|s| not working |4.3.1 |a| |ii|| | 11 |
| Centre Rear Stop lamp not working |1.2.1b| | 11 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 11 |