| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 142 |
| Windscreen wiper does not clear the windscreen effectively | 139 |
| Registration plate lamp issues | 83 |
| Parking brake: efficiency below requirements |3.7.B.7| | 44 |
| Brakes imbalanced across an axle | 40 |
| Horn not working |1.6.2a| | 29 |
| Rear brake binding | 24 |
| Rear parking brake recording little or no effort | 22 |
| Service brake: efficiency below requirements |3.7.B.7| | 22 |
| Nearside Headlamp aim beam image kick up to the offside |1.8| | 17 |
| Offside Headlamp aim beam image kick up to the offside |1.8| | 16 |
| Offside Rear fog lamp not working |1.3.2b| | 16 |
| Brake pipe excessively corroded | 15 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 15 |
| Registration plate issues | 15 |
| Nearside Stop lamp not working |1.2.1b| | 14 |
| Offside Stop lamp not working |1.2.1b| | 12 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 12 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 11 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 10 |
| Nearside Rear Stop lamp not working |1.2.1b| | 10 |
| Anti-lock braking system warning lamp indicates an ABS fault | 10 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 8 |
| Rear brake application uneven | 8 |
| Rear Mechanical brake component has restricted free movement | 8 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 8 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 8 |
| Brake load sensing valve linkage seized |3.6.E.3| | 7 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 7 |
| Fuel system component leaking |7.2.3| | 7 |
| Parking brake lever has no reserve travel |3.1.6b| | 7 |
| Front brake disc in such a condition that it is seriously weakened | 6 |
| Nearside Side repeater not working |1.4.A.2c| | 6 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 6 |
| Windscreen has damage | 6 |
| Windscreen washer not working | 6 |
| Nearside Front wheel bearing rough when rotated |2.5.A.2| | 6 |
| Horn not working (7.7 (a) (ii)) | 6 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 6 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 6 |
| Front brake application uneven | 5 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 5 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 5 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 5 |
| Offside Front wheel bearing rough when rotated |2.5.A.2| | 5 |
| Nearside front brake binding |3.7.B.1| | 5 |
| Offside front brake binding |3.7.B.1| | 5 |
| Nearside Headlamp not working on main beam |1.7.5a| | 5 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 5 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 5 |
| Nearside Headlamp insecure |1.7.3| | 5 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 4 |
| Nearside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 4 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 4 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 4 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 4 |
| Battery insecure |1.9.1| | 4 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 4 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 4 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 4 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 4 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 4 |
| Front brake excessively fluctuating | 4 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 4 |
| Rear fog lamp not working |1.3.2b| | 4 |
| Offside Side repeater not working |1.4.A.2c| | 4 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 4 |
| Brake hose damaged | 4 |
| Offside Rear Outline marker lamp not working (4.2.1 (a) (ii)) | 4 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 4 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 4 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 4 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 4 |
| Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 3 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 3 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 3 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 3 |
| Horn sounds harsh or grating |1.6.2e| | 3 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 3 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 3 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 3 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 3 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Stop lamp not working |1.2.1b| | 3 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 3 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 3 |
| Offside Front Headlamp insecure |1.7.3| | 3 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 3 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 3 |
| Nearside Front Front constant velocity joint gaiter split |2.5.C.1a| | 3 |
| Offside Rear fog lamp missing |1.3.2a| | 3 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 3 |
| Exhaust system not adequately supported |7.1.1| | 3 |
| Centre Rear Stop lamp not working |1.2.1b| | 3 |
| Offside Rear Rear position lamp|s| not working |1.1.A.3b| | 3 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 3 |
| Offside Rear Rear fog lamp missing |1.3.2a| | 3 |
| Windscreen wiper blade insecure | 3 |
| Offside Front brake disc excessively pitted |3.5.1h| | 3 |
| Nearside Inner Front 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 Front position lamp|s| not working |1.1.A.3b| | 3 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 3 |
| Nearside Front Service brake excessively binding |1.2.1 |f|| | 3 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 3 |
| Brake load sensing valve seized |3.6.E.3| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 3 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 3 |
| Offside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 3 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 3 |
| Emissions not tested |7.4.B.1| | 3 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 3 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 3 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 3 |
| Offside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 3 |
| Nearside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 3 |