| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 1426 |
| Brake pipe excessively corroded | 1332 |
| Headlamp aim out of alignment | 865 |
| Registration plate lamp issues | 610 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 228 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 192 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 136 |
| Registration plate issues | 129 |
| Brakes imbalanced across an axle | 106 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 83 |
| Anti-lock braking system warning lamp indicates an ABS fault | 73 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 72 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 72 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 72 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 65 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 62 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 55 |
| Offside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 52 |
| Battery insecure |1.9.1| | 50 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 49 |
| Windscreen wiper blade insecure | 49 |
| Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 48 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 47 |
| Offside Stop lamp not working |1.2.1b| | 46 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 46 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 45 |
| Rear brake binding | 44 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 44 |
| Nearside Stop lamp not working |1.2.1b| | 44 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 41 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 39 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 38 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 36 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 35 |
| Front brake excessively fluctuating | 33 |
| Windscreen washer not working | 31 |
| Parking brake: efficiency below requirements |3.7.B.7| | 30 |
| Offside Rear Stop lamp not working |1.2.1b| | 29 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 28 |
| Windscreen has damage | 28 |
| Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 28 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 27 |
| Service brake: efficiency below requirements |3.7.B.7| | 27 |
| Nearside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 27 |
| Oil leaking excessively from engine (8.4.1 (a) (i)) | 26 |
| Offside Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 26 |
| Nearside Rear Stop lamp not working |1.2.1b| | 26 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 26 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 25 |
| Offside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 25 |
| Offside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 24 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 24 |
| Offside Front Position lamp not working |4.2.1 |a|| | 23 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 23 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 23 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 22 |
| Power steering component|s| leaking |2.3.3b| | 22 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 21 |
| Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 21 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 21 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 21 |
| Front brake disc in such a condition that it is seriously weakened | 21 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 20 |
| Nearside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 20 |
| Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 20 |
| Oil leaking excessively from engine |8.4.1 |a| |i|| | 20 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 20 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 20 |
| Nearside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 20 |
| Offside Rear Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 20 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 19 |
| Rear brake application uneven | 19 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 19 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 18 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 18 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 18 |
| Offside Rear fog lamp not working |1.3.2b| | 18 |
| Offside Rear Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 18 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 17 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 17 |
| Driver`s seat insecure |6.2.A.1| | 17 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 17 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 16 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 16 |
| Emissions not tested |7.3.A.1| | 16 |
| Front brake application uneven | 16 |
| Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` |8.3.1b| | 16 |