| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 254 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 110 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 109 |
| Headlamp aim out of alignment | 89 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 72 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 64 |
| Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b)) | 55 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 50 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 24 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 14 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Offside Rear Shock absorbers has a serious fluid leak | 10 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 9 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 9 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 9 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 9 |
| Registration plate issues | 8 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 8 |
| Nearside Rear Shock absorbers has a serious fluid leak | 8 |
| Windscreen washer not working | 8 |
| Front brake disc in such a condition that it is seriously weakened | 8 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 7 |
| Rear brake disc in such a condition that it is seriously weakened | 7 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 6 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 6 |
| Brake performance not tested (1.2.1 (g)) | 6 |
| Registration plate lamp issues | 5 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 5 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 4 |
| Reversing lamp inoperative (4.6.1 (a)) | 4 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 4 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 4 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 3 |
| Front Service brake excessively fluctuating (1.2.1 (e)) | 3 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 3 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 3 |
| Offside Front Road wheel fixing missing (5.2.1 (a) (i)) | 3 |
| Emissions unable to be completed (8.2.1.2 (d)) | 3 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 3 |
| Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b)) | 3 |
| Brake hydraulic reservoir cap missing (1.1.10 (e)) | 3 |
| Nearside Rear Service brake excessively fluctuating (1.2.1 (e)) | 3 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |