| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 1441 |
| Headlamp aim out of alignment | 950 |
| Brake pipe excessively corroded | 731 |
| Registration plate lamp issues | 721 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 413 |
| Exhaust emits an excessive level of metered smoke |7.4.B.3a| | 300 |
| Nearside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 259 |
| Offside Front coil spring broken |2.4.C.1a| | 251 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 217 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 162 |
| Offside Front Coil spring fractured or broken |5.3.1 |b| |i|| | 137 |
| Registration plate issues | 132 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 125 |
| Brakes imbalanced across an axle | 114 |
| Exhaust emissions exceed default limit of 1.5m-1 (8.2.2.2 (b)) | 92 |
| Nearside Front coil spring broken |2.4.C.1a| | 91 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 82 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 79 |
| Anti-lock braking system warning lamp indicates an ABS fault | 70 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 68 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 68 |
| Exhaust emissions exceed manufacturer`s specified limit |8.2.2.2 |a|| | 64 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 64 |
| Exhaust emissions exceed default limit of 1.5m-1 |8.2.2.2 |b|| | 63 |
| Nearside Front Coil spring fractured or broken |5.3.1 |b| |i|| | 63 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 61 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 59 |
| Offside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 58 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 56 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 55 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 55 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 53 |
| Nearside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 52 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 50 |
| Offside Rear Rear wheel bearing rough when rotated |2.6.1| | 49 |
| Windscreen washer not working | 48 |
| Nearside Rear Rear wheel bearing rough when rotated |2.6.1| | 45 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 45 |
| Horn not working |1.6.2a| | 42 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 41 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 39 |
| Nearside Stop lamp not working |1.2.1b| | 39 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 36 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 36 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 35 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 34 |
| Offside Stop lamp not working |1.2.1b| | 34 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 33 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 32 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 32 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 31 |
| Parking brake: efficiency below requirements |3.7.B.7| | 31 |
| Front brake disc in such a condition that it is seriously weakened | 31 |
| Offside Front Position lamp not working |4.2.1 |a|| | 29 |
| Nearside Rear Rear position lamp|s| not working |1.1.A.3b| | 28 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 28 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 27 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 26 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 25 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 25 |
| Offside Rear Rear position lamp|s| not working |1.1.A.3b| | 24 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 24 |
| Offside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 23 |
| Front brake application uneven | 22 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 22 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 22 |
| Brake hose excessively deteriorated | 22 |
| Nearside Headlamp insecure |1.7.3| | 21 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 21 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 20 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 20 |