| Most common failures | No# failures |
|---|
| Brake pipe excessively corroded | 444 |
| Registration plate lamp issues | 361 |
| Windscreen wiper does not clear the windscreen effectively | 293 |
| Headlamp aim out of alignment | 183 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 67 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 60 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 59 |
| Registration plate issues | 55 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 47 |
| Brakes imbalanced across an axle | 42 |
| Nearside Stop lamp not working |1.2.1b| | 40 |
| Rear fog lamp not working |1.3.2b| | 38 |
| Exhaust emits an excessive level of metered smoke |7.4.B.3a| | 35 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 34 |
| Offside Stop lamp not working |1.2.1b| | 28 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 26 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 25 |
| Anti-lock braking system warning lamp indicates an ABS fault | 24 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 23 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 21 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 21 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 20 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 19 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 18 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 17 |
| Exhaust emissions exceed manufacturer`s specified limit |8.2.2.2 |a|| | 17 |
| Offside Front Position lamp not working |4.2.1 |a|| | 16 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 16 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 15 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 15 |
| Offside Rear fog lamp not working |1.3.2b| | 14 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 14 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 13 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 13 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 12 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 12 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 12 |
| Nearside Rear Shock absorbers has a serious fluid leak | 12 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 12 |
| Windscreen washer not working | 12 |
| Windscreen has damage | 12 |
| Offside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 12 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 12 |
| Offside Rear Shock absorbers has a serious fluid leak | 11 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 11 |
| Front brake excessively fluctuating | 11 |
| Nearside Rear Stop lamp not working |1.2.1b| | 11 |
| Parking brake: efficiency below requirements |3.7.B.7| | 11 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 11 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 11 |
| Horn not working |1.6.2a| | 10 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 10 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 10 |
| Offside Rear Stop lamp not working |1.2.1b| | 9 |
| Nearside Rear Leaf spring fractured (5.3.1 (b) (i)) | 9 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 9 |
| Offside Front Shock absorbers has a serious fluid leak | 9 |
| Stop lamp(s) all not working (4.3.1 (a) (iii)) | 9 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 9 |
| Emissions not tested (8.2.2.2 (e)) | 9 |
| Brake performance not tested (1.2.1 (g)) | 9 |
| Rear Prop shaft joint excessively worn (6.1.7 (c) (i)) | 9 |
| Offside Rear Leaf spring fractured |2.4.B.1a| | 8 |
| Nearside Front Shock absorbers has a serious fluid leak | 8 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 8 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 8 |
| Brake hose excessively deteriorated | 8 |
| Battery insecure |1.9.1| | 8 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 7 |
| Rear fog lamp does not emit a steady red light (4.5.4 (a)) | 7 |
| Offside Headlamp not working on main beam |1.7.5a| | 7 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 7 |
| Nearside Headlamp not working on main beam |1.7.5a| | 7 |
| Offside Rear fog lamp does not emit a steady red light (4.5.4 (a)) | 7 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 7 |
| Engine MIL inoperative or indicates a malfunction |8.2.2.2 |g|| | 7 |
| Offside Headlamp not working on main beam (4.1.1 (a) (ii)) | 7 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 7 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 7 |
| Nearside Front Body has a sharp edge caused by damage |6.1.C.1| | 7 |
| Nearside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 7 |
| Offside Rear fog lamp not working |4.5.1 |a| |ii|| | 7 |
| Offside Rear Leaf spring fractured (5.3.1 (b) (i)) | 7 |
| Nearside Rear Leaf spring fractured |2.4.B.1a| | 7 |
| Exhaust emissions exceed default limit of 1.5m-1 (8.2.2.2 (b)) | 7 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 7 |
| Rear brake application uneven | 7 |
| Offside Rear Rear fog lamp emits a light other than red |1.3.2e| | 6 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 6 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 6 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 6 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 6 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 6 |
| Rear parking brake recording little or no effort | 6 |
| Trailer electrical socket insecure |1.9.3a| | 6 |
| Offside Front front brake binding |3.7.B.1| | 6 |