| Most common failures | No# failures |
|---|
| Parking brake: efficiency below requirements |3.7.B.7| | 645 |
| Headlamp aim out of alignment | 437 |
| Registration plate lamp issues | 421 |
| Rear parking brake recording little or no effort | 384 |
| Windscreen wiper does not clear the windscreen effectively | 344 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 157 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 128 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 110 |
| Registration plate issues | 106 |
| Brakes imbalanced across an axle | 101 |
| Brake pipe excessively corroded | 100 |
| Anti-lock braking system warning lamp indicates an ABS fault | 79 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 71 |
| Parking brake lever has no reserve travel |3.1.6b| | 60 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 60 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 56 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 53 |
| Rear brake binding | 51 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 49 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 44 |
| Nearside Stop lamp not working |1.2.1b| | 42 |
| Offside Stop lamp not working |1.2.1b| | 42 |
| Front brake disc in such a condition that it is seriously weakened | 39 |
| Rear brake disc in such a condition that it is seriously weakened | 37 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 32 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 30 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 27 |
| Windscreen has damage | 26 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 26 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 24 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 24 |
| Nearside Rear Stop lamp not working |1.2.1b| | 23 |
| Front brake application uneven | 22 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 22 |
| Service brake: efficiency below requirements |3.7.B.7| | 22 |
| Rear brake application uneven | 21 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 20 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 20 |
| Battery insecure |1.9.1| | 19 |
| Windscreen wiper blade insecure | 18 |
| Windscreen washer not working | 15 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 15 |
| Rear Mechanical brake component has restricted free movement | 15 |
| Offside Steering rack gaiter split |2.2.D.2d| | 15 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 15 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 14 |
| Nearside Steering rack gaiter split |2.2.D.2d| | 13 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 13 |
| Offside Rear Stop lamp not working |1.2.1b| | 13 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 12 |
| Brake pedal spongy |3.3.B.1b| | 12 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 12 |
| Front position lamp|s| not working |1.1.A.3b| | 12 |
| Offside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 12 |
| rear parking |secondary| brakes imbalanced | 11 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 11 |
| Offside Front position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 10 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 10 |
| Front brake excessively fluctuating | 10 |
| Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 10 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 10 |
| Offside front brake binding |3.7.B.1| | 9 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 9 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 9 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 9 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 9 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 9 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 8 |
| Mechanical brake component has restricted free movement | 8 |
| Brake pedal creeps down when held under pressure |3.3.B.1a| | 8 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 8 |
| Exhaust emissions exceed level of metered smoke for a turbo charged engine (8.2.2.2 (b)) | 8 |
| Rear fog lamp not working |1.3.2b| | 8 |
| Nearside front brake binding |3.7.B.1| | 8 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 8 |
| Offside Rear brake caliper has restricted free movement |3.5.1k| | 8 |
| Nearside Front position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 7 |
| Emissions not tested |7.0| | 7 |
| Offside Rear Braking system leaking |3.6.A.1| | 7 |
| Front Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 7 |
| Offside Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 7 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 7 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 7 |
| Exhaust emissions exceed manufacturer`s specified limit |8.2.2.2 |a|| | 7 |