| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 593 |
| Windscreen wiper does not clear the windscreen effectively | 454 |
| Headlamp aim out of alignment | 450 |
| Brake pipe excessively corroded | 327 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 182 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 163 |
| Rear brake binding | 140 |
| Nearside Stop lamp not working |1.2.1b| | 126 |
| Offside Stop lamp not working |1.2.1b| | 109 |
| Registration plate issues | 84 |
| Parking brake: efficiency below requirements |3.7.B.7| | 78 |
| Brakes imbalanced across an axle | 75 |
| Battery insecure |1.9.1| | 75 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 59 |
| Rear brake disc in such a condition that it is seriously weakened | 59 |
| Centre Stop lamp not working |1.2.1b| | 59 |
| Parking brake lever has no reserve travel |3.1.6b| | 57 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 55 |
| Nearside Rear Stop lamp not working |1.2.1b| | 53 |
| Offside Rear Stop lamp not working |1.2.1b| | 50 |
| Rear parking brake recording little or no effort | 48 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 43 |
| Anti-lock braking system warning lamp indicates an ABS fault | 38 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 37 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 35 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 34 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 33 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 33 |
| Fuel system component leaking |7.2.3| | 32 |
| Nearside Front Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 31 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 29 |
| 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| | 29 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 25 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 25 |
| 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| | 22 |
| Front brake disc in such a condition that it is seriously weakened | 22 |
| 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| | 22 |
| Rear brake application uneven | 21 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 20 |
| Offside Rear fog lamp not working |1.3.2b| | 19 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 19 |
| Offside Front Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 19 |
| Windscreen wiper blade insecure | 18 |
| Stop lamp not working |1.2.1b| | 18 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 16 |
| 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| | 16 |
| Rear fog lamp not working |1.3.2b| | 16 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 16 |
| Windscreen washer not working | 16 |
| Front brake application uneven | 16 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 15 |
| Nearside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 15 |
| Nearside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 14 |
| Nearside Outer Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 14 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 14 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 14 |
| Offside Rear brake disc excessively scored |3.5.1h| | 13 |
| Offside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 13 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 13 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 13 |
| Centre Rear Seat belt locking mechanism does not secure or release |5.2.5a| | 13 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 13 |
| Front position lamp|s| not working |1.1.A.3b| | 12 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 12 |
| Front Sub-frame corroded and seriously weakened |2.4.G.1| | 12 |
| Nearside Front Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 12 |
| Windscreen has damage | 11 |
| Offside Front position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 11 |
| Nearside Front Sub-frame corroded and seriously weakened |2.4.G.1| | 11 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 11 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Centre Rear Stop lamp not working |1.2.1b| | 11 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 11 |
| Offside front brake binding |3.7.B.1| | 11 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 10 |
| Rear Mechanical brake component has restricted free movement | 10 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 10 |
| Nearside front brake binding |3.7.B.1| | 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 Front Macpherson strut has excessive movement at the upper attachment |2.5.A.1c| | 10 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 9 |
| Nearside Rear brake disc excessively scored |3.5.1h| | 9 |
| Rear brake disc excessively pitted |3.5.1h| | 9 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 9 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 9 |
| Front brake excessively fluctuating | 9 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 9 |
| Offside Rear Shock absorbers has a serious fluid leak | 9 |
| Nearside Front wheel bearing rough when rotated |2.5.A.2| | 8 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 8 |
| Nearside Front position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 8 |
| Offside Front Front wheel bearing rough when rotated |2.5.A.2| | 8 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt |5.3.4 |b| |ii|| | 8 |
| Emissions not tested |7.0| | 8 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 8 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 8 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 8 |
| Service brake: efficiency below requirements |3.7.B.7| | 8 |
| Offside Front Position lamp not working |4.2.1 |a|| | 8 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 8 |