| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 368 |
| Windscreen wiper does not clear the windscreen effectively | 296 |
| Registration plate issues | 273 |
| Registration plate lamp issues | 259 |
| Brake pipe excessively corroded | 188 |
| Brakes imbalanced across an axle | 101 |
| Rear brake binding | 72 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 68 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 64 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 60 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 55 |
| Parking brake lever has no reserve travel |3.1.6b| | 43 |
| Parking brake: efficiency below requirements |3.7.B.7| | 42 |
| Offside Rear Anti-roll bar linkage insecure |2.4.G.1| | 37 |
| Nearside front brake binding |3.7.B.1| | 33 |
| Offside Front Anti-roll bar linkage insecure |2.4.G.1| | 31 |
| Offside front brake binding |3.7.B.1| | 30 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 29 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 28 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 28 |
| Rear fog lamp not working |1.3.2b| | 28 |
| Rear brake disc in such a condition that it is seriously weakened | 27 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 27 |
| Bonnet cannot be secured in the closed position |8.4.1| | 26 |
| Nearside Front Anti-roll bar linkage insecure |2.4.G.1| | 25 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 25 |
| Anti-lock braking system warning lamp indicates an ABS fault | 25 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 24 |
| Exhaust catalytic converter missing where one was fitted as standard |7.1.3| | 23 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 23 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 22 |
| Nearside Front front brake binding |3.7.B.1| | 22 |
| Mechanical brake component has restricted free movement | 21 |
| Windscreen has damage | 21 |
| Offside Front front brake binding |3.7.B.1| | 21 |
| Offside Stop lamp not working |1.2.1b| | 20 |
| Rear fog lamp insecure |1.3.2a| | 20 |
| Rear brake application uneven | 20 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 20 |
| Rear parking brake recording little or no effort | 20 |
| Horn not working |1.6.2a| | 19 |
| Offside Rear Anti-roll bar linkage fractured |2.4.G.1| | 19 |
| Offside Front Anti-roll bar linkage fractured |2.4.G.1| | 18 |
| Nearside Stop lamp not working |1.2.1b| | 17 |
| Front brake application uneven | 17 |
| Windscreen washer not working | 17 |
| Nearside Rear Anti-roll bar linkage fractured |2.4.G.1| | 16 |
| Service brake: efficiency below requirements |3.7.B.7| | 16 |
| Nearside Front Anti-roll bar linkage fractured |2.4.G.1| | 16 |
| Electronic power steering warning lamp indicates a failure in the system |2.3.8| | 16 |
| Nearside Headlamp cleaning device inoperative |1.7.2| | 16 |
| Offside Headlamp cleaning device inoperative |1.7.2| | 16 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 15 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 15 |
| Battery insecure |1.9.1| | 15 |
| Brake hose excessively deteriorated | 15 |
| Rear fog lamp missing |1.3.2a| | 14 |
| Headlamp cleaning device inoperative |1.7.2| | 14 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 14 |
| Nearside Rear Anti-roll bar linkage insecure |2.4.G.1| | 14 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 14 |
| Brake hose has insufficient room to move | 12 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 12 |
| Offside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 12 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 12 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 11 |
| Rear Mechanical brake component has restricted free movement | 11 |
| Offside Rear Wheel nut|s| missing |4.2.A.1e| | 11 |
| Offside Headlamp not working on main beam |1.7.5a| | 10 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 10 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 10 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 10 |
| Front Headlamp cleaning device inoperative |1.7.2| | 9 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 9 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 9 |
| Nearside Front Windscreen wiper blade deteriorated |8.2.2| | 9 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 9 |
| Nearside Side repeater not working |1.4.A.2c| | 9 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 9 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 8 |
| Nearside Rear Shock absorbers has a serious fluid leak | 8 |
| Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 8 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 8 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 7 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 7 |
| Electronic power steering warning lamp indicates a system malfunction (2.6 (a)) | 7 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 7 |
| Bonnet cannot be secured in the closed position (3.1 (b) (i)) | 7 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 7 |
| Brake performance not tested |3.7.A.1| | 7 |