| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 191 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 88 |
| Registration plate issues | 70 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 64 |
| Windscreen washer not working | 58 |
| Windscreen wiper does not clear the windscreen effectively | 58 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 48 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 46 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 46 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 41 |
| Nearside Front Shock absorbers has a serious fluid leak | 36 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 34 |
| Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b)) | 25 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 24 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 23 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 22 |
| Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 19 |
| Offside Front Shock absorbers has a serious fluid leak | 17 |
| Horn not working (7.7 (a)) | 16 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 14 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Offside Rear Service brake excessively fluctuating (1.2.1 (e)) | 10 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 10 |
| Rear Service brake excessively fluctuating (1.2.1 (e)) | 10 |
| Rear brake disc in such a condition that it is seriously weakened | 10 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 9 |
| Front Windscreen washer jets misaligned and not providing sufficient fluid to the windscreen (3.5 (a)) | 9 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 8 |
| Offside Windscreen washer jets misaligned and not providing sufficient fluid to the windscreen (3.5 (a)) | 8 |
| Offside Front Windscreen washer jets misaligned and not providing sufficient fluid to the windscreen (3.5 (a)) | 8 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 8 |
| Central Rear Seat belt buckle not functioning as intended (7.1.2 (d)) | 7 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 7 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 7 |
| Brakes imbalanced across an axle | 6 |
| Nearside Rear Service brake excessively fluctuating (1.2.1 (e)) | 6 |
| Nearside Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 6 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 6 |
| Front brake disc in such a condition that it is seriously weakened | 6 |
| Horn not working (7.7 (a) (ii)) | 6 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 6 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 5 |
| Nearside Front Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 5 |
| Offside Front Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 5 |
| Offside Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii)) | 5 |
| Offside Rear Reversing lamp inoperative (4.6.1 (a)) | 5 |
| Windscreen washer jets misaligned and not providing sufficient fluid to the windscreen (3.5 (a)) | 5 |
| Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 5 |
| Nearside Front Road wheel fixing missing (5.2.1 (a) (i)) | 5 |
| Nearside Front Side repeater not working (4.4.1 (a) (ii)) | 5 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 5 |
| Offside Rear Rear fog lamp does not emit a steady red light (4.5.4 (a)) | 4 |
| Nearside Front Windscreen washer jets misaligned and not providing sufficient fluid to the windscreen (3.5 (a)) | 4 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 4 |
| Offside Reversing lamp inoperative (4.6.1 (a)) | 4 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 4 |
| Nearside Rear Road wheel fixing missing (5.2.1 (a) (i)) | 4 |
| Emissions not tested (8.2.1.2 (d)) | 4 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |
| Nearside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |