| Most common failures | No# failures |
|---|
| Brake pipe excessively corroded | 2417 |
| Windscreen wiper does not clear the windscreen effectively | 2124 |
| Headlamp aim out of alignment | 1767 |
| Registration plate lamp issues | 1472 |
| Brakes imbalanced across an axle | 663 |
| Nearside Front coil spring broken |2.4.C.1a| | 569 |
| Registration plate issues | 535 |
| Parking brake: efficiency below requirements |3.7.B.7| | 499 |
| Parking brake lever has no reserve travel |3.1.6b| | 490 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 463 |
| Rear parking brake recording little or no effort | 361 |
| Offside Front coil spring broken |2.4.C.1a| | 321 |
| Nearside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 313 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 312 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 305 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 287 |
| Rear fog lamp not working |1.3.2b| | 270 |
| Anti-lock braking system warning lamp indicates an ABS fault | 260 |
| Horn not working |1.6.2a| | 244 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 226 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 205 |
| Offside Rear fog lamp not working |1.3.2b| | 186 |
| Rear brake binding | 182 |
| Nearside Stop lamp not working |1.2.1b| | 172 |
| Nearside Front Coil spring fractured or broken |5.3.1 |b| |i|| | 164 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 160 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 154 |
| Offside Rear Shock absorbers has a serious fluid leak | 152 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 151 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 150 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 150 |
| Horn not working (7.7 (a) (ii)) | 148 |
| Offside Stop lamp not working |1.2.1b| | 140 |
| Offside Front Coil spring fractured or broken |5.3.1 |b| |i|| | 131 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 130 |
| Windscreen washer not working | 127 |
| Horn not working (7.7 (a)) | 127 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 124 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 105 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 102 |
| Offside Front Position lamp not working |4.2.1 |a|| | 91 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 88 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 87 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 86 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 85 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 85 |
| Front brake application uneven | 81 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 81 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 80 |
| Horn not working |7.7 |a| |ii|| | 80 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 79 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 78 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 77 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 76 |
| Front brake disc in such a condition that it is seriously weakened | 75 |
| Service brake: efficiency below requirements |3.7.B.7| | 75 |
| Front brake excessively fluctuating | 73 |
| Parking brake lever has excessive movement indicating incorrect adjustment |1.1.6 |c|| | 72 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 71 |
| Rear brake application uneven | 71 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 69 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 68 |
| Exhaust emits an excessive level of metered smoke |7.4.B.3a| | 68 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 68 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 67 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 67 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 66 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 66 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 65 |
| Nearside Rear Stop lamp not working |1.2.1b| | 64 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 63 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 62 |
| Reversing lamp inoperative (4.6.1 (a)) | 59 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 59 |
| Rear fog lamp not working |4.5.1 |a| |ii|| | 59 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 58 |
| Windscreen has damage | 58 |
| Offside Rear Stop lamp not working |1.2.1b| | 58 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 57 |
| Offside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 54 |
| Offside front brake binding |3.7.B.1| | 54 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 53 |
| rear parking |secondary| brakes imbalanced | 53 |
| Nearside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 53 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 52 |
| Trailer electrical socket damaged so that lead cannot be securely connected |1.9.3b| | 49 |
| Nearside Rear Leaf spring fractured (5.3.1 (b) (i)) | 48 |
| Offside Front front brake binding |3.7.B.1| | 46 |
| Offside Rear Leaf spring fractured |2.4.B.1a| | 44 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 44 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 44 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 43 |
| Trailer electrical socket insecure |1.9.3a| | 43 |
| Nearside Rear Leaf spring fractured |2.4.B.1a| | 43 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 42 |
| Offside Front Upper Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 42 |
| Emissions not tested (8.2.2.2 (e)) | 42 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 41 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 40 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 39 |
| Nearside Rear Leaf spring shackle pin or bush excessively worn (5.3.4 (a) (i)) | 39 |
| Offside Rear Leaf spring shackle pin or bush excessively worn (5.3.4 (a) (i)) | 39 |
| Offside Rear Leaf spring fractured (5.3.1 (b) (i)) | 39 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 38 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 38 |