| Most common failures | No# failures |
|---|
| Brake pipe excessively corroded | 388 |
| Windscreen wiper does not clear the windscreen effectively | 305 |
| Registration plate lamp issues | 218 |
| Headlamp aim out of alignment | 203 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 129 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 109 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 108 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 88 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 78 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 67 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 53 |
| Brakes imbalanced across an axle | 50 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 49 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 45 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 44 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 40 |
| Windscreen washer not working | 38 |
| Engine MIL inoperative or indicates a malfunction |8.2.2.2 |g|| | 32 |
| Registration plate issues | 31 |
| Nearside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 31 |
| Front brake disc in such a condition that it is seriously weakened | 27 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 25 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 24 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 23 |
| Offside Stop lamp not working |1.2.1b| | 22 |
| Nearside Stop lamp not working |1.2.1b| | 22 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 22 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 21 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 21 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 20 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 18 |
| Anti-lock braking system warning lamp indicates an ABS fault | 18 |
| Parking brake lever has no reserve travel |3.1.6b| | 17 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 17 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 16 |
| Parking brake: efficiency below requirements |3.7.B.7| | 16 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 15 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 13 |
| Offside Front Position lamp not working |4.2.1 |a|| | 13 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 13 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 12 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 12 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 12 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 12 |
| Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour (8.2.2.2 (d)) | 11 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 11 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 11 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 10 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 10 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 10 |
| Offside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 9 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 9 |
| Offside Rear Stop lamp|s| not working |4.3.1 |a| |ii|| | 9 |
| Offside Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 9 |
| Nearside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 8 |
| Parking brake lever has excessive movement indicating incorrect adjustment |1.1.6 |c|| | 8 |
| Offside Front Coil spring fractured or broken |5.3.1 |b| |i|| | 8 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 8 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 8 |
| Front Service brake excessively fluctuating (1.2.1 (e)) | 8 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 8 |
| Nearside Rear Stop lamp|s| not working |4.3.1 |a| |ii|| | 7 |
| Bonnet cannot be secured in the closed position (3.1 (b) (i)) | 7 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 7 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 7 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 6 |
| Offside Front Upper Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 6 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 6 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 6 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 6 |
| Horn not working (7.7 (a)) | 6 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 6 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 6 |