| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 815 |
| Headlamp aim out of alignment | 413 |
| Brakes imbalanced across an axle | 187 |
| Brake pipe excessively corroded | 185 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 181 |
| Registration plate lamp issues | 160 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 138 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 132 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 107 |
| Rear brake disc in such a condition that it is seriously weakened | 101 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 92 |
| Registration plate issues | 72 |
| Windscreen washer not working | 62 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 58 |
| Anti-lock braking system warning lamp indicates an ABS fault | 47 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 38 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 35 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 35 |
| Front brake excessively fluctuating | 33 |
| Front brake disc in such a condition that it is seriously weakened | 33 |
| Rear brake binding | 32 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 30 |
| Electronic stability system warning lamp indicates a fault |3.4.1c| | 28 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 28 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 27 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 26 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 26 |
| Rear Mechanical brake component has restricted free movement | 25 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 25 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 25 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 24 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 23 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 23 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 22 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 22 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 21 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 21 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 20 |
| Front brake application uneven | 20 |
| Parking brake: efficiency below requirements |3.7.B.7| | 19 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 19 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 19 |
| Electronic stability control warning lamp indicates a fault |7.12 |e|| | 18 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 16 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 16 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 15 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 15 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 15 |
| Offside Stop lamp not working |1.2.1b| | 15 |
| Nearside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 14 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 14 |
| Nearside Stop lamp not working |1.2.1b| | 13 |
| Offside Front Position lamp not working |4.2.1 |a|| | 13 |
| Brake pedal spongy |3.3.B.1b| | 13 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 12 |
| Rear brake application uneven | 12 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 12 |
| Nearside Rear Shock absorbers has a serious fluid leak | 12 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 12 |
| Windscreen wiper blade insecure | 12 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 11 |
| Centre Rear Seat belt locking mechanism does not secure or release |5.2.5a| | 11 |
| Brake performance not tested (1.2.1 (g)) | 11 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 11 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 11 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 11 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 11 |
| Offside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 11 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 11 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 11 |
| Central Rear Seat belt buckle not functioning as intended (7.1.2 (d)) | 10 |
| Nearside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 10 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 10 |