| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 1420 |
| Windscreen wiper does not clear the windscreen effectively | 1332 |
| Brake pipe excessively corroded | 1137 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 547 |
| Registration plate lamp issues | 324 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 279 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 274 |
| Registration plate issues | 215 |
| Brakes imbalanced across an axle | 202 |
| Windscreen washer not working | 182 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 173 |
| Nearside Rear Leaf spring fractured (5.3.1 (b) (i)) | 171 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 133 |
| Offside Rear Leaf spring fractured (5.3.1 (b) (i)) | 133 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 115 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 112 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 109 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 101 |
| Front brake disc in such a condition that it is seriously weakened | 100 |
| Nearside Rear Shock absorbers has a serious fluid leak | 93 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 86 |
| Offside Rear Shock absorbers has a serious fluid leak | 79 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 75 |
| Brake pedal anti-slip provision missing (1.1.2 (c)) | 75 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 73 |
| Anti-lock braking system warning lamp indicates an ABS fault | 67 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 65 |
| Nearside Front Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 61 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 61 |
| Offside Front Anti-roll bar pin or bush excessively worn (5.3.4 (a) (i)) | 58 |
| Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 58 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 57 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 55 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 54 |
| Reversing lamp inoperative (4.6.1 (a)) | 53 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 50 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 47 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 47 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 45 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 43 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 40 |
| Horn not working (7.7 (a)) | 39 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 38 |
| Exhaust emissions exceed default limit of 0.7m-1 (8.2.2.2 (b)) | 37 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 36 |
| Offside Rear Rear fog lamp does not emit a steady red light (4.5.4 (a)) | 35 |
| Offside Front Shock absorbers has a serious fluid leak | 32 |
| Nearside Rear Lower Shock absorbers has an excessively worn bush (5.3.2 (c)) | 32 |
| Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 31 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 30 |
| Rear fog lamp does not emit a steady red light (4.5.4 (a)) | 30 |
| Rear Prop shaft joint excessively worn (6.1.7 (c) (i)) | 29 |
| Nearside Rear Shock absorbers has an excessively worn bush (5.3.2 (c)) | 29 |
| Rear fog lamp missing (4.5.1 (a) (ii)) | 28 |
| Offside Front Road wheel fixing missing (5.2.1 (a) (i)) | 28 |
| Brake performance not tested (1.2.1 (g)) | 27 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 27 |
| Offside Rear fog lamp does not emit a steady red light (4.5.4 (a)) | 27 |
| Nearside Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 26 |
| Offside Rear Service brake lagging in operation (1.2.1 (d)) | 25 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 25 |
| Nearside Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 25 |
| Offside Front Position lamp not working |4.2.1 |a|| | 25 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 24 |
| Windscreen damaged and affecting the drivers view of the road (3.2 (a) (ii)) | 24 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 24 |
| Offside Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 22 |