| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 146 |
| Windscreen wiper does not clear the windscreen effectively | 119 |
| Registration plate lamp issues | 111 |
| Brake pipe excessively corroded | 41 |
| Parking brake: efficiency below requirements |3.7.B.7| | 38 |
| Offside Rear coil spring broken |2.4.C.1a| | 35 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 34 |
| Nearside Rear coil spring broken |2.4.C.1a| | 32 |
| Battery insecure |1.9.1| | 26 |
| Rear parking brake recording little or no effort | 24 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 22 |
| Nearside Stop lamp not working |1.2.1b| | 21 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 21 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 19 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 19 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 19 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 18 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 18 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 17 |
| Offside Stop lamp not working |1.2.1b| | 17 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 17 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 16 |
| Registration plate issues | 15 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 15 |
| Windscreen has damage | 15 |
| 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| | 13 |
| Offside Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 12 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 12 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 12 |
| Brake hose excessively deteriorated | 12 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 12 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 12 |
| Offside Front Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 12 |
| Brakes imbalanced across an axle | 12 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 11 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 11 |
| Nearside Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 11 |
| 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| | 11 |
| Offside Rear Stop lamp not working |1.2.1b| | 11 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 11 |
| Front brake disc in such a condition that it is seriously weakened | 10 |
| 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| | 10 |
| 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| | 10 |
| Nearside Front Anti-roll bar ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 10 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 10 |
| Horn not working |1.6.2a| | 10 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 9 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 9 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 9 |
| Anti-lock braking system warning lamp indicates an ABS fault | 8 |
| Windscreen washer not working | 8 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 8 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 8 |
| Brake pedal anti-slip provision missing |3.3.A.1b| | 8 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 7 |
| Rear brake binding | 7 |
| Offside Front Anti-roll bar ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 7 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 7 |
| 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| | 6 |
| Nearside 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 Rear coil spring incomplete |2.4.C.1a| | 6 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 6 |
| Offside Rear fog lamp not working |1.3.2b| | 6 |
| Nearside Rear Shock absorber has negligible damping effect |2.7.5| | 6 |
| Offside Rear Shock absorber has negligible damping effect |2.7.5| | 6 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 6 |
| Nearside Front Outer Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 6 |
| Nearside Outer Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 6 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 5 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 5 |
| Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 5 |
| Offside Headlamp not working on main beam |1.7.5a| | 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 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 5 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 5 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 5 |
| Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b| | 5 |
| Nearside Rear coil spring incomplete |2.4.C.1a| | 4 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 4 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 4 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 4 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 4 |
| Offside Front constant velocity joint gaiter insecurely mounted to its housing |2.5.C.1a| | 4 |
| Nearside Rear Stop lamp not working |1.2.1b| | 4 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 4 |
| Nearside Front coil spring broken |2.4.C.1a| | 4 |
| Offside Rear coil spring fractured |2.4.C.1a| | 4 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 4 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 4 |
| Offside Outer Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 4 |
| Nearside Headlamp not working on main beam |1.7.5a| | 4 |
| Nearside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 4 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 4 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 4 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 4 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear brake application uneven | 4 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 4 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Nearside Front Headlamp insecure |1.7.3| | 3 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 3 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 3 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Nearside Front Track rod end ball joint has excessive play |2.1.3 |b| |i|| | 3 |
| Offside Front coil spring broken |2.4.C.1a| | 3 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Windscreen wiper blade insecure | 3 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 3 |
| Offside Front Front constant velocity joint gaiter insecurely mounted to its housing |2.5.C.1a| | 3 |
| Offside Headlamp insecure |1.7.3| | 3 |
| Fuel cap/sealing device missing |7.2.4a| | 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 |
| Nearside Rear coil spring fractured |2.4.C.1a| | 3 |
| Central Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 3 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 3 |
| Offside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 3 |
| Offside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 3 |
| Nearside Inner Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 3 |
| Nearside Front Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 3 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 3 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Offside Front coil spring fractured |2.4.C.1a| | 3 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 3 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 3 |
| Hazard warning switch faulty |1.4.B.1d| | 3 |
| Nearside Steering arm has relative movement at its fixings |2.2.B.1h| | 3 |
| Nearside Front Front constant velocity joint is insecure |2.5.C.1b| | 3 |
| Central Exhaust has a major leak of exhaust gases |7.1.2| | 3 |
| Rear Exhaust system not adequately supported |7.1.1| | 3 |
| Offside Front Outer Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 3 |