| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 120 |
| Windscreen wiper does not clear the windscreen effectively | 98 |
| Headlamp aim out of alignment | 72 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 45 |
| Parking brake: efficiency below requirements |3.7.B.7| | 38 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 32 |
| Brake pipe excessively corroded | 31 |
| Brakes imbalanced across an axle | 26 |
| Rear parking brake recording little or no effort | 24 |
| Nearside Stop lamp not working |1.2.1b| | 24 |
| Steering rack insecure |2.2.B.1a| | 21 |
| Offside Stop lamp not working |1.2.1b| | 19 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 18 |
| Registration plate issues | 17 |
| Nearside Rear Stop lamp not working |1.2.1b| | 17 |
| Horn not working |1.6.2a| | 14 |
| Centre Stop lamp not working |1.2.1b| | 13 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 12 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 12 |
| Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b| | 12 |
| Front brake application uneven | 10 |
| Offside Rear Stop lamp not working |1.2.1b| | 10 |
| Rear brake binding | 8 |
| Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 7 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 7 |
| Offside Front brake disc excessively pitted |3.5.1h| | 7 |
| Nearside Front front brake binding |3.7.B.1| | 7 |
| Offside Rear fog lamp not working |1.3.2b| | 6 |
| Front position lamp|s| not working |1.1.A.3b| | 6 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 6 |
| Parking brake lever has no reserve travel |3.1.6b| | 6 |
| Battery insecure |1.9.1| | 6 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 5 |
| Stop lamp not working |1.2.1b| | 5 |
| Rear brake application uneven | 5 |
| Windscreen has damage | 5 |
| front brakes release unevenly |3.7.B.4| | 4 |
| Nearside Front Windscreen wiper blade deteriorated |8.2.2| | 4 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 4 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 4 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 4 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 4 |
| Offside front brake binding |3.7.B.1| | 4 |
| Rear Mechanical brake component has restricted free movement | 4 |
| Offside Front front brake binding |3.7.B.1| | 4 |
| Front brake disc in such a condition that it is seriously weakened | 4 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 4 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 4 |
| Brake hose excessively deteriorated | 3 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 3 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 3 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 3 |
| 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| | 3 |
| rear parking |secondary| brakes imbalanced | 3 |
| Front brake excessively fluctuating | 3 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 3 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 3 |
| Windscreen wiper blade insecure | 3 |
| Anti-lock braking system warning lamp indicates an ABS fault | 3 |
| Centre Rear Stop lamp not working |1.2.1b| | 3 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 3 |
| Offside Front Position lamp not working |4.2.1 |a|| | 2 |
| Nearside Front Steering rack gaiter split |2.2.D.2d| | 2 |
| Emissions not tested |7.0| | 2 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 2 |
| Steering component is not secure to the vehicle structure |2.2.B.1a| | 2 |
| 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| | 2 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 2 |
| 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| | 2 |
| Nearside Front Tie bar/rod ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 2 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 2 |
| Nearside Rear Stop lamp|s| not working |4.3.1 |a| |ii|| | 2 |
| Nearside Front All position lamps not working |1.1.A.3b| | 2 |
| Mechanical brake component has restricted free movement | 2 |
| Nearside Front Brake hose twisted |3.6.B.4c| | 2 |
| Nearside Front Steering arm has relative movement at its fixings |2.2.B.1h| | 2 |
| Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 2 |
| Nearside Headlamp aim beam image kick up to the offside |1.8| | 2 |
| Nearside front brake binding |3.7.B.1| | 2 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 2 |
| Offside Front Windscreen wiper blade deteriorated |8.2.2| | 2 |
| Rear fog lamp tell tale not working |1.3.1b| | 2 |
| Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` |8.3.1b| | 2 |
| Nearside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt |5.3.4 |b| |ii|| | 2 |
| Offside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt |5.3.4 |b| |ii|| | 2 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 2 |
| Windscreen washer not working | 2 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 2 |
| Nearside Front Front position lamp|s| has less than 50% of the light sources illuminating |1.1.A.3b| | 2 |
| Offside Rear Parking brake inoperative on one side |1.4.1 |a|| | 2 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 2 |
| Offside Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b| | 2 |
| Nearside Front Anti-roll bar ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 2 |
| 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| | 2 |
| Nearside Front Suspension arm rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 2 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 2 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 2 |