| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 63 |
| Windscreen wiper does not clear the windscreen effectively | 43 |
| Registration plate lamp issues | 30 |
| Brakes imbalanced across an axle | 22 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 17 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 14 |
| Brake pipe excessively corroded | 13 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 13 |
| Anti-lock braking system warning lamp indicates an ABS fault | 11 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 10 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 10 |
| Registration plate issues | 10 |
| Brake hose excessively deteriorated | 10 |
| Offside Stop lamp not working |1.2.1b| | 9 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 9 |
| Parking brake: efficiency below requirements |3.7.B.7| | 9 |
| Windscreen washer not working | 8 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 8 |
| Nearside Stop lamp not working |1.2.1b| | 6 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 6 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 6 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 6 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 6 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 6 |
| Nearside Rear coil spring broken |2.4.C.1a| | 6 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 5 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 5 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 5 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 5 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 5 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 5 |
| Exhaust emits an excessive level of metered smoke for a non-turbo charged engine |7.4.B.3b| | 5 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 5 |
| 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| | 5 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 5 |
| Offside Rear Stop lamp not working |1.2.1b| | 4 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 4 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 4 |
| Offside Rear Shock absorbers has a serious fluid leak | 4 |
| Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 4 |
| Offside Rear coil spring broken |2.4.C.1a| | 4 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 4 |
| Nearside Rear Stop lamp not working |1.2.1b| | 4 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 4 |
| Rear brake binding | 3 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 3 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 3 |
| Offside Front Coil spring fractured or broken |5.3.1 |b| |i|| | 3 |
| Nearside Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Nearside Steering rack gaiter missing or no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 3 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 3 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 3 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 3 |
| Brake hose damaged | 3 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 3 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 3 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 3 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 3 |
| Offside Front coil spring broken |2.4.C.1a| | 3 |
| Front Direction indicator incorrect colour |1.4.A.2f| | 3 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 3 |
| Nearside Headlamp insecure (4.1.1 (c)) | 3 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 3 |
| Nearside Side repeater not working |1.4.A.2c| | 3 |
| Parking brake lever has no reserve travel |3.1.6b| | 3 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 3 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 2 |
| Central Stop lamp(s) not working (4.3.1 (a) (ii)) | 2 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 2 |
| Offside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 2 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 2 |
| Nearside Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 2 |
| Nearside Rear Shock absorbers has a serious fluid leak | 2 |
| Stop lamp not working |1.2.1b| | 2 |
| 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| | 2 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 2 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 2 |
| Driver`s seat insecure |6.2.A.1| | 2 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 2 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 2 |
| Engine MIL inoperative or indicates a malfunction |8.2.2.2 |g|| | 2 |
| Central Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 2 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 2 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 2 |
| Nearside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 2 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 2 |
| Offside Rear Rear position lamp|s| not working |1.1.A.3b| | 2 |
| Headlamp levelling device inoperative (4.1.5 (a)) | 2 |
| 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| | 2 |
| Nearside Front Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 2 |
| Offside Front Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 2 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 2 |
| Nearside Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 2 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 2 |
| Emissions not tested |7.0| | 2 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 2 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 2 |
| Offside Front coil spring incomplete |2.4.C.1a| | 2 |
| Front Exhaust system not adequately supported |7.1.1| | 2 |
| Rear parking brake recording little or no effort | 2 |
| Front brake disc in such a condition that it is seriously weakened | 2 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 2 |
| Rear brake application uneven | 2 |
| Front brake excessively fluctuating | 2 |
| Nearside Front coil spring broken |2.4.C.1a| | 2 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Nearside Windscreen wiper not working (3.4 (a)) | 2 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 2 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |