| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 1395 |
| Windscreen wiper does not clear the windscreen effectively | 1209 |
| Headlamp aim out of alignment | 689 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 420 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 389 |
| Brake pipe excessively corroded | 359 |
| Brakes imbalanced across an axle | 338 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 316 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 298 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 222 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 197 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 193 |
| Windscreen washer not working | 173 |
| Exhaust emits an excessive level of metered smoke |7.4.B.3a| | 158 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 157 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 148 |
| Offside Rear Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 148 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 126 |
| Nearside Rear Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 121 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 103 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 99 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 96 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 96 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 94 |
| Registration plate issues | 94 |
| Horn not working (7.7 (a)) | 93 |
| Offside Front Position lamp not working |4.2.1 |a|| | 86 |
| Exhaust emissions exceed default limit of 1.5m-1 (8.2.2.2 (b)) | 86 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 83 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 82 |
| Anti-lock braking system warning lamp indicates an ABS fault | 80 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 78 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 73 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 69 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 68 |
| Nearside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 64 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 64 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 63 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 63 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 62 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 60 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 59 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 58 |
| Offside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 57 |
| Windscreen has damage | 57 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 54 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 54 |
| Centre Stop lamp not working |1.2.1b| | 53 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 52 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 52 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 51 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 51 |
| Offside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 50 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 47 |
| Front brake disc in such a condition that it is seriously weakened | 47 |
| Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 46 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 44 |
| Horn not working (7.7 (a) (ii)) | 42 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 41 |
| Central Stop lamp(s) not working (4.3.1 (a) (ii)) | 40 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 40 |
| Nearside Front Lower Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 40 |
| Battery insecure |1.9.1| | 38 |
| Exhaust emissions exceed default limit of 1.5m-1 |8.2.2.2 |b|| | 37 |
| Offside Headlamp lens seriously defective (4.1.1 (b) (ii)) | 35 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 34 |
| Nearside Headlamp lens seriously defective (4.1.1 (b) (ii)) | 34 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 34 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 34 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 33 |
| Offside Front Lower Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 32 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 32 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 32 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 32 |
| Horn not working |1.6.2a| | 31 |
| Parking brake: efficiency below requirements |3.7.B.7| | 30 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 29 |
| Front brake excessively fluctuating | 29 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 29 |
| Offside Front Anti-roll bar ball joint excessively worn (5.3.4 (a) (i)) | 28 |
| Offside Rear Anti-roll bar ball joint excessively worn (5.3.4 (a) (i)) | 28 |
| Reversing lamp inoperative (4.6.1 (a)) | 27 |
| Nearside Rear Anti-roll bar ball joint excessively worn (5.3.4 (a) (i)) | 26 |
| Offside Front Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 25 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 24 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 23 |
| Central Stop lamp not working |1.2.1b| | 22 |
| Front brake application uneven | 22 |
| Nearside Rear Anti-roll bar linkage ball joint excessively worn |5.3.4 |a| |i|| | 21 |
| Nearside Front Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 21 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 21 |
| Rear parking brake recording little or no effort | 21 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 20 |
| Nearside Front Anti-roll bar ball joint excessively worn (5.3.4 (a) (i)) | 20 |
| Offside Stop lamp not working |1.2.1b| | 20 |