| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 732 |
| Registration plate lamp issues | 506 |
| Headlamp aim out of alignment | 375 |
| Brake pipe excessively corroded | 327 |
| Parking brake: efficiency below requirements |3.7.B.7| | 151 |
| Registration plate issues | 144 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 140 |
| Offside Stop lamp not working |1.2.1b| | 135 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 127 |
| Rear parking brake recording little or no effort | 116 |
| Nearside Stop lamp not working |1.2.1b| | 114 |
| Brakes imbalanced across an axle | 93 |
| Centre Stop lamp not working |1.2.1b| | 88 |
| Offside Rear Stop lamp not working |1.2.1b| | 84 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 80 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 75 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 73 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 72 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 72 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 62 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 61 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 60 |
| Nearside Rear Stop lamp not working |1.2.1b| | 54 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 53 |
| Anti-lock braking system warning lamp indicates an ABS fault | 51 |
| Parking brake lever has no reserve travel |3.1.6b| | 48 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 36 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 36 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 36 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 35 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 35 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 32 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 32 |
| Rear brake binding | 31 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 29 |
| Front brake application uneven | 28 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 28 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 27 |
| Brake hose excessively deteriorated | 25 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 23 |
| Windscreen has damage | 23 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 23 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 22 |
| Front brake disc in such a condition that it is seriously weakened | 22 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 22 |
| Offside Front Position lamp not working |4.2.1 |a|| | 22 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 22 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 22 |
| Offside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 20 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 19 |
| Centre Rear Stop lamp not working |1.2.1b| | 19 |
| Windscreen wiper blade insecure | 19 |
| Nearside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 19 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 19 |
| Battery insecure |1.9.1| | 19 |
| Front brake excessively fluctuating | 18 |
| Offside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 18 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 18 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 17 |
| Nearside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 17 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 16 |
| Offside Front Shock absorbers has a serious fluid leak | 16 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 15 |
| Stop lamp not working |1.2.1b| | 15 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 15 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 14 |
| Nearside Front Headlamp has a product on the lens so that the light output is severely reduced (4.1.4 (b)) | 14 |
| Nearside Rear Sub-frame rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 14 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 14 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 13 |
| Centre Rear Seat belt retracting mechanism defective |5.2.5b| | 13 |
| Nearside Headlamp lens seriously defective (4.1.1 (b) (ii)) | 13 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 13 |
| Rear brake disc in such a condition that it is seriously weakened | 13 |
| Offside Rear Sub-frame rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 13 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 13 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 12 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 12 |
| Centre Rear Upper Stop lamp not working |1.2.1b| | 12 |
| Offside Front Headlamp has a product on the lens so that the light output is severely reduced (4.1.4 (b)) | 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 Rear Wheel nut|s| missing |4.2.A.1e| | 12 |
| Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 12 |
| Rear fog lamp not working |1.3.2b| | 12 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 11 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 11 |
| Nearside Rear Stop lamp|s| not working |4.3.1 |a| |ii|| | 11 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 11 |
| Offside Headlamp aim projected beam image is obviously incorrect |4.1.2 |c|| | 11 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 11 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 11 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 11 |
| Offside Headlamp not working on main beam |1.7.5a| | 10 |
| Exhaust emissions exceed level of metered smoke for a turbo charged engine (8.2.2.2 (b)) | 10 |
| 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| | 10 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 10 |
| Nearside Rear Shock absorbers has a serious fluid leak | 10 |
| Offside Headlamp lens seriously defective (4.1.1 (b) (ii)) | 10 |
| Horn not working |1.6.2a| | 10 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 10 |
| Nearside Headlamp light intensity severely reduced (4.1.4 (a)) | 10 |
| Offside Headlamp light intensity severely reduced (4.1.4 (a)) | 10 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 10 |
| Windscreen washer not working | 10 |