| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 522 |
| Rear brake disc in such a condition that it is seriously weakened | 181 |
| Windscreen wiper does not clear the windscreen effectively | 144 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 124 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 114 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 110 |
| Front brake disc in such a condition that it is seriously weakened | 101 |
| Windscreen washer not working | 94 |
| Front Exhaust system insecure (6.1.2 (a)) | 91 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 87 |
| Brake pedal anti-slip provision missing (1.1.2 (c)) | 80 |
| Nearside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 78 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 73 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 72 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 69 |
| Registration plate issues | 59 |
| Offside Rear Service brake excessively fluctuating (1.2.1 (e)) | 55 |
| Anti-lock braking system warning lamp indicates an ABS fault | 49 |
| Nearside Rear Service brake excessively fluctuating (1.2.1 (e)) | 44 |
| Brakes imbalanced across an axle | 43 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 38 |
| Rear Service brake excessively fluctuating (1.2.1 (e)) | 37 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 32 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 31 |
| Fuel cap/sealing device missing (6.1.3 (b) (i)) | 30 |
| Exhaust system insecure (6.1.2 (a)) | 29 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 28 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 28 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 27 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 25 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 24 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 23 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 23 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 23 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 22 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 21 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 19 |
| Horn not working (7.7 (a)) | 18 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 17 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 16 |
| Central Front Exhaust system insecure (6.1.2 (a)) | 16 |
| Brake performance unable to be tested (1.2.1 (g)) | 15 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 15 |
| Offside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 14 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 13 |
| Parking brake lever defective so that it cannot be satisfactorily operated (1.1.6 (d)) | 13 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 13 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 13 |
| Front Service brake excessively fluctuating (1.2.1 (e)) | 13 |
| Nearside Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 12 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 12 |
| Emissions unable to be completed (8.2.1.2 (d)) | 12 |
| Front Inner Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 12 |