| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 505 |
| Registration plate issues | 466 |
| Windscreen wiper does not clear the windscreen effectively | 92 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 67 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 57 |
| Offside Side repeater not working |1.4.A.2c| | 56 |
| Nearside Side repeater not working |1.4.A.2c| | 53 |
| Anti-lock braking system warning lamp indicates an ABS fault | 51 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 42 |
| Rear brake binding | 36 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 35 |
| Registration plate lamp issues | 34 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 34 |
| Brakes imbalanced across an axle | 31 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 31 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 28 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 26 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 24 |
| Nearside Headlamp cleaning device inoperative |1.7.2| | 23 |
| Offside Headlamp cleaning device inoperative |1.7.2| | 23 |
| Windscreen washer not working | 23 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 22 |
| Electronic stability system warning lamp indicates a fault |3.4.1c| | 22 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 20 |
| Rear brake disc in such a condition that it is seriously weakened | 19 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 19 |
| Front brake disc in such a condition that it is seriously weakened | 18 |
| Brake fluid warning lamp illuminated |3.6.G.2| | 18 |
| Offside Front Side repeater not working |1.4.A.2c| | 18 |
| Offside Stop lamp not working |1.2.1b| | 17 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 17 |
| Windscreen has damage | 17 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 16 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 15 |
| Nearside Front Wheel bolt|s| missing |4.2.A.1e| | 14 |
| Nearside Side repeater not working |4.4.1 |a| |ii|| | 13 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 13 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 13 |
| Parking brake: efficiency below requirements |3.7.B.7| | 12 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 12 |
| Front Headlamp cleaning device inoperative |1.7.2| | 12 |
| Nearside Front Side repeater not working |1.4.A.2c| | 12 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 12 |
| Nearside Rear Wheel bolt|s| missing |4.2.A.1e| | 12 |
| Parking brake lever has no reserve travel |3.1.6b| | 11 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 11 |
| Exhaust catalytic converter missing where one was fitted as standard (8.2.1.1 (a)) | 11 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 11 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 11 |
| Offside Front Wheel bolt|s| missing |4.2.A.1e| | 11 |
| Front brake excessively fluctuating | 11 |
| Nearside Stop lamp not working |1.2.1b| | 10 |
| Nearside Headlamp not working on main beam |1.7.5a| | 10 |
| Nearside Rear Upper Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 10 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 10 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 9 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 9 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 9 |
| Front brake application uneven | 9 |
| Nearside Rear Upper Suspension arm has excessive play in a pin/bush |2.4.G.2| | 9 |
| Offside Front Side repeater not working (4.4.1 (a) (ii)) | 9 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 9 |
| Brake pipe excessively corroded | 8 |
| Offside Side repeater not working |4.4.1 |a| |ii|| | 7 |
| Rear parking brake recording little or no effort | 7 |
| Emissions not tested (8.2.1.2 (d)) | 7 |
| Nearside Rear Road wheel fixing missing (5.2.1 (a) (i)) | 7 |