| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 2710 |
| Windscreen wiper does not clear the windscreen effectively | 2555 |
| Brake pipe excessively corroded | 1918 |
| Registration plate lamp issues | 1452 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1138 |
| Rear parking brake recording little or no effort | 629 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 526 |
| Registration plate issues | 396 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 323 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 278 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 277 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 275 |
| Brakes imbalanced across an axle | 259 |
| Nearside Stop lamp not working |1.2.1b| | 247 |
| Offside Stop lamp not working |1.2.1b| | 239 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 230 |
| Rear brake binding | 228 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 217 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 201 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 198 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 185 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 178 |
| Brake hose excessively deteriorated | 147 |
| Rear brake disc in such a condition that it is seriously weakened | 146 |
| Nearside Rear Stop lamp not working |1.2.1b| | 140 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 139 |
| Parking brake lever has no reserve travel |3.1.6b| | 134 |
| Offside Rear Stop lamp not working |1.2.1b| | 133 |
| Offside Rear Rear position lamp|s| not working |1.1.A.3b| | 118 |
| Exhaust emits an excessive level of metered smoke |7.4.B.3a| | 117 |
| Nearside Rear Rear position lamp|s| not working |1.1.A.3b| | 116 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 116 |
| Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 115 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 113 |
| Front brake disc in such a condition that it is seriously weakened | 110 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 109 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 102 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 98 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 97 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 96 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 91 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 91 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 89 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 84 |
| Offside Front Position lamp not working |4.2.1 |a|| | 83 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 77 |
| Nearside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 71 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 70 |
| Rear fog lamp not working |1.3.2b| | 68 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 66 |
| Windscreen has damage | 64 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 63 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 61 |
| Windscreen washer not working | 60 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 60 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 59 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 59 |
| Offside Rear fog lamp not working |1.3.2b| | 58 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 58 |
| Rear Mechanical brake component has restricted free movement | 56 |
| Offside Rear coil spring broken |2.4.C.1a| | 55 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 54 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 54 |
| Exhaust emissions exceed manufacturer`s specified limit |8.2.2.2 |a|| | 53 |
| Nearside Front Shock absorbers has a serious fluid leak | 52 |
| Nearside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 50 |
| Windscreen wiper blade insecure | 50 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 50 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 50 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 49 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 48 |
| Offside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 46 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 46 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 44 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 44 |
| Anti-lock braking system warning lamp indicates an ABS fault | 43 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 43 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 43 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 42 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 41 |
| Rear brake application uneven | 41 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 41 |
| Horn not working |1.6.2a| | 40 |