| Most common failures | No# failures |
|---|
| Rear brake application uneven | 4 |
| Brakes imbalanced across an axle | 3 |
| Headlamp aim out of alignment | 3 |
| Exhaust emissions carbon monoxide content excessive |7.3.B.1a| | 2 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 1 |
| Nearside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Windscreen wiper does not clear the windscreen effectively | 1 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Position lamp not working trailer side lights not working (4.2.1 (a) (ii)) | 1 |
| Offside Front Battery insecure and likely to fall from carrier (4.13 (a) (ii)) | 1 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 1 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 1 |
| Rear parking brake recording little or no effort | 1 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 1 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 1 |
| Nearside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Registration plate issues | 1 |
| Offside Side repeater insecure |1.4.A.2b| | 1 |
| Battery insecure |1.9.1| | 1 |
| Brake pipe excessively corroded | 1 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 1 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Offside Rear fog lamp not working |1.3.2b| | 1 |