| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 387 |
| Windscreen wiper does not clear the windscreen effectively | 317 |
| Headlamp aim out of alignment | 278 |
| Brake pipe excessively corroded | 122 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 110 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 92 |
| Nearside Stop lamp not working |1.2.1b| | 78 |
| Offside Stop lamp not working |1.2.1b| | 71 |
| Rear brake binding | 63 |
| Parking brake: efficiency below requirements |3.7.B.7| | 61 |
| Rear brake disc in such a condition that it is seriously weakened | 61 |
| Brakes imbalanced across an axle | 59 |
| Registration plate issues | 56 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 45 |
| Nearside Rear Stop lamp not working |1.2.1b| | 43 |
| Parking brake lever has no reserve travel |3.1.6b| | 37 |
| Battery insecure |1.9.1| | 37 |
| Centre Stop lamp not working |1.2.1b| | 34 |
| Rear parking brake recording little or no effort | 32 |
| Offside Rear Stop lamp not working |1.2.1b| | 28 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 28 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 27 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 25 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 25 |
| Offside Front Macpherson strut has excessive movement at the upper attachment |2.5.A.1c| | 24 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 22 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 20 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 20 |
| Offside Front position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 19 |
| Rear brake application uneven | 18 |
| Fuel system component leaking |7.2.3| | 18 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 18 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 17 |
| Offside Rear fog lamp not working |1.3.2b| | 16 |
| Anti-lock braking system warning lamp indicates an ABS fault | 16 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 15 |
| Nearside Front position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 15 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 15 |
| Front brake application uneven | 15 |
| Nearside Rear Shock absorbers has a serious fluid leak | 15 |
| Offside Rear Shock absorbers has a serious fluid leak | 14 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 13 |
| Rear Mechanical brake component has restricted free movement | 13 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 13 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 12 |
| 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| | 12 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 12 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 11 |
| Centre Rear Stop lamp not working |1.2.1b| | 11 |
| Offside Front Position lamp not working |4.2.1 |a|| | 11 |
| 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| | 11 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 11 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 11 |
| Windscreen washer not working | 10 |
| Rear fog lamp not working |1.3.2b| | 10 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 10 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 10 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 10 |
| Centre Upper Stop lamp not working |1.2.1b| | 10 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 9 |
| Windscreen wiper blade insecure | 9 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 9 |
| Nearside Front Sub-frame corroded and seriously weakened |2.4.G.1| | 9 |
| Horn not working |1.6.2a| | 9 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 9 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 9 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 8 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 8 |
| 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| | 8 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt |5.3.4 |b| |ii|| | 8 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt |5.3.4 |b| |ii|| | 8 |
| Fuel pipe leaking |7.2.3| | 8 |
| Rear brake disc excessively pitted |3.5.1h| | 8 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 8 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 8 |
| 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| | 7 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 7 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 7 |
| Nearside Front position lamp|s| not in good working order |function impaired| |1.1.4a| | 7 |
| Offside Headlamp not working on main beam |1.7.5a| | 7 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 7 |
| Front brake excessively fluctuating | 7 |
| 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| | 6 |
| Nearside Front Sub-frame corroded and seriously weakened (5.3.3 (b) (i)) | 6 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 6 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt |6.1.7 |g| |ii|| | 6 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 6 |
| Offside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 6 |
| 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| | 6 |
| Offside Front Suspension arm corroded and seriously weakened |2.4.G.1| | 6 |
| Nearside Front Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 6 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt |6.1.7 |g| |ii|| | 6 |
| 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| | 6 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 6 |
| Front position lamp|s| not working |1.1.A.3b| | 6 |
| Emissions not tested |7.0| | 6 |
| Offside Front Anti-roll bar ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 6 |
| Offside front brake binding |3.7.B.1| | 6 |
| Nearside Front All position lamps not working |1.1.A.3b| | 6 |
| Rear Stop lamp not working |1.2.1b| | 6 |