| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 2059 |
| Headlamp aim out of alignment | 513 |
| Brake pipe excessively corroded | 113 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 87 |
| Windscreen washer not working | 71 |
| Brakes imbalanced across an axle | 60 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 56 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 54 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 48 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 38 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 38 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 38 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 37 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 35 |
| Registration plate lamp issues | 33 |
| Nearside Rear Seat belt buckle not functioning as intended (7.1.2 (d)) | 30 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 29 |
| Offside Rear Seat belt buckle not functioning as intended (7.1.2 (d)) | 27 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 17 |
| Registration plate issues | 17 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 16 |
| Front brake disc in such a condition that it is seriously weakened | 15 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 14 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 13 |
| Horn not working (7.7 (a)) | 13 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 12 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 12 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 11 |
| Nearside Rear Shock absorbers has a serious fluid leak | 10 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 10 |
| Offside Rear Shock absorbers has a serious fluid leak | 10 |