| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 100 |
| Headlamp aim out of alignment | 64 |
| Registration plate issues | 38 |
| Brake pipe excessively corroded | 25 |
| Registration plate lamp issues | 15 |
| Brakes imbalanced across an axle | 10 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 10 |
| Rear fog lamp not working |1.3.2b| | 9 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 8 |
| Rear brake disc in such a condition that it is seriously weakened | 6 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 6 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 6 |
| Offside Rear fog lamp not working |1.3.2b| | 5 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 5 |
| Windscreen has damage | 5 |
| Parking brake lever has no reserve travel |3.1.6b| | 4 |
| Windscreen washer not working | 4 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 4 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 3 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 3 |
| Trailer electrical socket |13 pin| not operating the trailer lamps as intended |1.9.4| | 2 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 2 |
| Parking brake: efficiency below requirements |3.7.B.7| | 2 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 2 |
| Nearside Front Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 2 |
| Offside Front Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 2 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Nearside Rear Brake disc contaminated (1.1.14 (b)) | 2 |
| Nearside Front Service brake grabbing severely (1.2.1 (c)) | 2 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 2 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 2 |
| Offside Rear fog lamp not working |4.5.1 |a| |ii|| | 2 |
| Nearside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 2 |
| Front brake disc in such a condition that it is seriously weakened | 2 |
| Horn not working |1.6.2a| | 2 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 2 |
| Front brake application uneven | 2 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 2 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 2 |
| Electronic stability control warning lamp indicates a fault |7.12 |e|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 2 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 2 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 2 |
| Trailer electrical socket likely to become detached (4.10 (a) (ii)) | 2 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 2 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Fuel system component leaking |7.2.3| | 2 |