| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 2584 |
| Windscreen wiper does not clear the windscreen effectively | 2038 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1238 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 905 |
| Rear parking brake recording little or no effort | 845 |
| Brake pipe excessively corroded | 815 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 661 |
| Offside Stop lamp not working |1.2.1b| | 654 |
| Nearside Stop lamp not working |1.2.1b| | 614 |
| Registration plate lamp issues | 598 |
| Brakes imbalanced across an axle | 591 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 527 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 511 |
| Parking brake lever has no reserve travel |3.1.6b| | 493 |
| Registration plate issues | 408 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 387 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 376 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 337 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 308 |
| Emissions not tested |7.0| | 308 |
| Battery insecure |1.9.1| | 298 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 279 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 266 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 265 |
| Rear brake binding | 251 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 243 |
| Nearside Rear Stop lamp not working |1.2.1b| | 235 |
| Offside Rear Stop lamp not working |1.2.1b| | 235 |
| Offside Rear fog lamp not working |1.3.2b| | 216 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 211 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 198 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 195 |
| Service brake: efficiency below requirements |3.7.B.7| | 191 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 190 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 190 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 183 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 178 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 166 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 165 |
| Front brake application uneven | 154 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 140 |
| Front brake disc in such a condition that it is seriously weakened | 139 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 135 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 133 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 133 |
| Windscreen has damage | 132 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 129 |
| Front Exhaust system not adequately supported |7.1.1| | 120 |
| Offside Headlamp not working on main beam |1.7.5a| | 119 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 118 |
| Horn not working |1.6.2a| | 111 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 111 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 111 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 111 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 109 |
| Offside Front Direction indicator not working |1.4.A.2c| | 109 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 108 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 106 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 105 |
| Windscreen wiper blade insecure | 103 |
| 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| | 102 |
| Anti-lock braking system warning lamp indicates an ABS fault | 100 |
| Offside Headlamp insecure |1.7.3| | 97 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 95 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 95 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 92 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 90 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 89 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 88 |
| Offside front brake binding |3.7.B.1| | 84 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 81 |
| 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| | 81 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 80 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 80 |
| Nearside Headlamp not working on main beam |1.7.5a| | 80 |
| Nearside Headlamp insecure |1.7.3| | 78 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 75 |
| Nearside Front Front constant velocity joint gaiter split |2.5.C.1a| | 73 |
| Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 73 |
| Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` |8.3.1b| | 73 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 72 |
| Offside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 71 |
| Nearside front brake binding |3.7.B.1| | 71 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 70 |
| Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 69 |
| Exhaust system not adequately supported |7.1.1| | 68 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 68 |
| Offside Front position lamp|s| incorrect colour |1.1.A.3e| | 67 |
| Centre Rear Seat belt retracting mechanism defective |5.2.5b| | 66 |
| Nearside Front position lamp|s| incorrect colour |1.1.A.3e| | 66 |
| Brake pedal anti-slip provision missing |3.3.A.1b| | 65 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 65 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 62 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 61 |
| Offside Outer Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 60 |
| Offside Rear Wheel nut|s| missing |4.2.A.1e| | 59 |
| Nearside Front Wheel nut|s| missing |4.2.A.1e| | 59 |
| Nearside Side repeater not working |1.4.A.2c| | 59 |
| Offside Front Windscreen wiper blade deteriorated |8.2.2| | 58 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 56 |
| Rear Exhaust system not adequately supported |7.1.1| | 56 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 56 |
| 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| | 55 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 55 |
| 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| | 55 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 54 |
| Rear brake application uneven | 54 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 52 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 51 |
| Rear brake disc in such a condition that it is seriously weakened | 49 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 47 |
| Offside Front front brake binding |3.7.B.1| | 46 |
| Rear fog lamp not working |1.3.2b| | 46 |
| Nearside Front Windscreen wiper blade deteriorated |8.2.2| | 45 |
| Offside Front Front constant velocity joint gaiter split |2.5.C.1a| | 45 |
| Mechanical brake component has restricted free movement | 44 |
| Nearside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 44 |
| Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition |7.1.4| | 44 |
| Nearside Rear Wheel nut|s| missing |4.2.A.1e| | 43 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 43 |
| Offside Front constant velocity joint gaiter insecurely mounted to its housing |2.5.C.1a| | 43 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 43 |
| Parking brake lever, pawl mechanism pivots or their associated mountings are insecure |3.1.4b| | 43 |
| 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| | 43 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 42 |
| 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| | 42 |
| Brake pedal anti-slip provision incomplete |3.3.A.1b| | 41 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 39 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 39 |
| Offside Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 38 |
| Nearside Rear Rear position lamp|s| not working |1.1.A.3b| | 37 |
| Rear Mechanical brake component has restricted free movement | 37 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 37 |
| Nearside Front front brake binding |3.7.B.1| | 37 |