| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 3946 |
| Brake pipe excessively corroded | 2124 |
| Headlamp aim out of alignment | 1701 |
| Registration plate lamp issues | 1445 |
| Horn not working |1.6.2a| | 480 |
| Brakes imbalanced across an axle | 316 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 277 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 277 |
| Nearside Stop lamp not working |1.2.1b| | 252 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 230 |
| Offside Stop lamp not working |1.2.1b| | 221 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 215 |
| Horn not working (7.7 (a) (ii)) | 211 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 202 |
| Registration plate issues | 183 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 176 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 175 |
| Windscreen washer not working | 159 |
| Horn not working (7.7 (a)) | 150 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 142 |
| Nearside Front wheel bearing rough when rotated |2.5.A.2| | 136 |
| Offside Front wheel bearing rough when rotated |2.5.A.2| | 126 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 121 |
| Horn not working |7.7 |a| |ii|| | 120 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 119 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 112 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 110 |
| Nearside Rear Stop lamp not working |1.2.1b| | 109 |
| Offside Rear Stop lamp not working |1.2.1b| | 107 |
| Nearside Front Front wheel bearing rough when rotated |2.5.A.2| | 104 |
| Offside Front Front wheel bearing rough when rotated |2.5.A.2| | 101 |
| Front brake disc in such a condition that it is seriously weakened | 91 |
| Anti-lock braking system warning lamp indicates an ABS fault | 82 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 69 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 69 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 66 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 64 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 63 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 63 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 60 |
| Offside Rear Stop lamp|s| not working |4.3.1 |a| |ii|| | 59 |
| Offside Front Position lamp not working |4.2.1 |a|| | 58 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 58 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 57 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 57 |
| Windscreen wiper blade insecure | 55 |
| Rear brake binding | 54 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 51 |
| Offside Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 48 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 46 |
| Offside front brake binding |3.7.B.1| | 45 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 43 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 43 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 41 |
| Horn sound not in accordance with requirements (7.7 (c)) | 41 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 41 |
| Nearside Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 41 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 40 |
| Brake hose excessively deteriorated | 40 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 38 |
| Nearside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 37 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 37 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 37 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 37 |
| Parking brake: efficiency below requirements |3.7.B.7| | 37 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 37 |