| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 180 |
| Headlamp aim out of alignment | 56 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 35 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 33 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 27 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 23 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 19 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 16 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 16 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 15 |
| Rear brake disc in such a condition that it is seriously weakened | 15 |
| Windscreen washer not working | 15 |
| Front brake disc in such a condition that it is seriously weakened | 14 |
| Windscreen wiper does not clear the windscreen effectively | 14 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 13 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 12 |
| Rear Exhaust system insecure (6.1.2 (a)) | 12 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 11 |
| Front Exhaust system insecure (6.1.2 (a)) | 10 |
| Exhaust system insecure (6.1.2 (a)) | 9 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 9 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 9 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 9 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 8 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 7 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 7 |
| Nearside Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 7 |
| Exhaust emissions exceed default limit of 0.7m-1 (8.2.2.2 (b)) | 7 |
| Brakes imbalanced across an axle | 7 |
| Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour (8.2.2.2 (d)) | 6 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 6 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 6 |
| Offside Rear Service brake excessively fluctuating (1.2.1 (e)) | 6 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 6 |
| Offside Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 6 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 5 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 4 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 4 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 4 |
| Nearside Front Daytime running lamp not working (4.2.1 (a) (ii)) | 4 |
| Registration plate issues | 4 |
| Nearside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 4 |
| Offside Rear Exhaust system insecure (6.1.2 (a)) | 3 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 3 |
| Nearside Rear Service brake excessively fluctuating (1.2.1 (e)) | 3 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 3 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 3 |
| Offside Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 3 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 3 |
| Nearside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Offside Daytime running lamp not working (4.2.1 (a) (ii)) | 3 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 3 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 3 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Rear Service brake excessively fluctuating (1.2.1 (e)) | 3 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 3 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 3 |