| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 376 |
| Windscreen wiper does not clear the windscreen effectively | 342 |
| Headlamp aim out of alignment | 283 |
| Brake pipe excessively corroded | 160 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 143 |
| Parking brake: efficiency below requirements |3.7.B.7| | 142 |
| Rear parking brake recording little or no effort | 124 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 88 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 83 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 79 |
| Rear brake binding | 75 |
| Parking brake lever has no reserve travel |3.1.6b| | 71 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 70 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 54 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 52 |
| Brakes imbalanced across an axle | 51 |
| Registration plate issues | 49 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 47 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 47 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 43 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 40 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 38 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 38 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 37 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 37 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 33 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 32 |
| Exhaust emits an excessive level of metered smoke |7.4.B.3a| | 32 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 31 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 30 |
| Offside Front Position lamp not working |4.2.1 |a|| | 29 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 29 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 29 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 29 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 29 |
| Windscreen washer not working | 26 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 26 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 23 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 22 |
| Offside Stop lamp not working |1.2.1b| | 21 |
| Front brake disc in such a condition that it is seriously weakened | 21 |
| Offside Rear Other passenger door cannot be opened from outside the vehicle (6.2.3 (a)) | 21 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 19 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 19 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 19 |
| Anti-lock braking system warning lamp indicates an ABS fault | 18 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 18 |
| Rear brake disc in such a condition that it is seriously weakened | 17 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 17 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 17 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 16 |
| Offside Parking brake inoperative on one side |1.4.1 |a|| | 15 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 15 |
| Parking brake lever has excessive movement indicating incorrect adjustment |1.1.6 |c|| | 14 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 14 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 14 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 14 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 14 |
| Offside Rear Parking brake inoperative on one side |1.4.1 |a|| | 13 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 12 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 12 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 12 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 12 |
| Service brake: efficiency below requirements |3.7.B.7| | 11 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 11 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 11 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 11 |
| rear parking |secondary| brakes imbalanced | 10 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 10 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 10 |
| Offside Rear passenger door cannot be opened from outside the vehicle |6.2.B.1c| | 9 |
| Offside Front Anti-roll bar ball joint excessively worn (5.3.4 (a) (i)) | 9 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 9 |
| Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 9 |
| Nearside Front Anti-roll bar ball joint excessively worn (5.3.4 (a) (i)) | 9 |
| Rear brake application uneven | 8 |
| Nearside Stop lamp not working |1.2.1b| | 8 |
| Front brake excessively fluctuating | 8 |
| Offside Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 8 |
| Front brake application uneven | 8 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 8 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 8 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 8 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn |5.3.4 |a| |i|| | 7 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 7 |
| Nearside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 7 |
| Offside Rear Stop lamp not working |1.2.1b| | 7 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 7 |
| Nearside Rear Other passenger door cannot be opened from outside the vehicle (6.2.3 (a)) | 7 |
| Offside Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 7 |
| Nearside Side repeater incorrect colour (4.4.3 (a)) | 7 |