| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 315 |
| Headlamp aim out of alignment | 306 |
| Brake pipe excessively corroded | 171 |
| Registration plate lamp issues | 87 |
| Registration plate issues | 52 |
| Brakes imbalanced across an axle | 32 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 30 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 27 |
| Parking brake lever has no reserve travel |3.1.6b| | 26 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 19 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 19 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 17 |
| Windscreen washer not working | 16 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 15 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 15 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 14 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 14 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 13 |
| Exhaust emits an excessive level of metered smoke |7.4.B.3a| | 12 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 12 |
| Offside Rear fog lamp not working |1.3.2b| | 11 |
| Front brake disc in such a condition that it is seriously weakened | 11 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 10 |
| Rear brake disc in such a condition that it is seriously weakened | 10 |
| Horn not working (7.7 (a)) | 10 |
| Front brake application uneven | 10 |
| Rear parking brake recording little or no effort | 9 |
| Rear Mechanical brake component has restricted free movement | 9 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 9 |
| Nearside Front front brake binding |3.7.B.1| | 9 |
| Parking brake: efficiency below requirements |3.7.B.7| | 9 |
| Offside Rear Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 9 |
| Windscreen has damage | 9 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 8 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 8 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 8 |
| Nearside Rear Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 8 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 8 |
| Rear brake binding | 7 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 7 |
| Front brake excessively fluctuating | 7 |
| Nearside Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 7 |
| Horn not working |1.6.2a| | 7 |
| Nearside Rear Shock absorbers has a serious fluid leak | 7 |
| Rear fog lamp not working |1.3.2b| | 7 |
| Offside Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 7 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 7 |
| Offside Rear Shock absorbers has a serious fluid leak | 7 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Nearside Front Outer Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 7 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 6 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 6 |
| Rear fog lamp not working |4.5.1 |a| |ii|| | 6 |
| Nearside Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 6 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 6 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 6 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 6 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 6 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 6 |
| Offside front brake binding |3.7.B.1| | 6 |
| Offside Front coil spring broken |2.4.C.1a| | 5 |
| Service brake: efficiency below requirements |3.7.C.1a| | 5 |
| Exhaust emissions exceed manufacturer`s specified limit |8.2.2.2 |a|| | 5 |
| Offside Front Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 5 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 5 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 5 |
| Offside Front Outer Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 5 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 5 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 5 |
| Offside Front Front wheel bearing rough when rotated |2.5.A.2| | 5 |