| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 3044 |
| Windscreen wiper does not clear the windscreen effectively | 2628 |
| Registration plate lamp issues | 2355 |
| Brake pipe excessively corroded | 1335 |
| Registration plate issues | 1159 |
| Parking brake: efficiency below requirements |3.7.B.7| | 763 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 761 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 668 |
| Nearside Headlamp not working on main beam |1.7.5a| | 613 |
| Rear parking brake recording little or no effort | 474 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 402 |
| Parking brake lever has no reserve travel |3.1.6b| | 384 |
| Nearside Stop lamp not working |1.2.1b| | 344 |
| Brakes imbalanced across an axle | 343 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 341 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 297 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 288 |
| Offside Stop lamp not working |1.2.1b| | 285 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 281 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 281 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 281 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 276 |
| Rear Exhaust system not adequately supported |7.1.1| | 272 |
| Brake hose excessively deteriorated | 267 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 259 |
| Offside Rear fog lamp not working |1.3.2b| | 239 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 230 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 225 |
| Windscreen has damage | 214 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 214 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 208 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 206 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 195 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 189 |
| Rear brake disc in such a condition that it is seriously weakened | 189 |
| Anti-lock braking system warning lamp indicates an ABS fault | 180 |
| Front brake disc in such a condition that it is seriously weakened | 178 |
| Nearside Front Headlamp not working on main beam |1.7.5a| | 175 |
| Nearside Rear Upper Suspension arm has excessive play in a pin/bush |2.4.G.2| | 155 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 153 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 153 |
| Offside Rear Upper Suspension arm has excessive play in a pin/bush |2.4.G.2| | 147 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 145 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 138 |
| Nearside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 130 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 129 |
| Nearside Rear Stop lamp not working |1.2.1b| | 127 |
| Offside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 127 |
| Offside Rear Stop lamp not working |1.2.1b| | 122 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 116 |
| 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| | 110 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 107 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 107 |
| Nearside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 105 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 104 |
| Windscreen wiper blade insecure | 102 |
| 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| | 98 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 94 |
| Nearside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 93 |
| Emissions not tested |7.0| | 92 |
| Rear fog lamp not working |1.3.2b| | 91 |
| Nearside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 90 |
| Rear brake binding | 87 |
| Front brake application uneven | 87 |
| Nearside Front Wheel bolt|s| missing |4.2.A.1e| | 86 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 86 |
| Horn not working |1.6.2a| | 85 |
| 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| | 85 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 83 |
| Service brake: efficiency below requirements |3.7.B.7| | 82 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 82 |
| Exhaust system not adequately supported |7.1.1| | 82 |
| Nearside Side repeater not working |1.4.A.2c| | 81 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 79 |
| Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 78 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 76 |
| Offside Headlamp not working on main beam |1.7.5a| | 76 |
| Battery insecure |1.9.1| | 75 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 75 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 75 |
| 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| | 75 |
| Offside Side repeater not working |1.4.A.2c| | 74 |
| Offside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 72 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 71 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 70 |
| Offside Rear Suspension arm has excessive play in a pin/bush |2.4.G.2| | 69 |
| Offside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 69 |
| Nearside Rear Suspension arm has excessive play in a pin/bush |2.4.G.2| | 68 |
| Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 68 |
| Offside Rear Shock absorber has negligible damping effect |2.7.5| | 67 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 67 |
| Nearside Rear Shock absorber has negligible damping effect |2.7.5| | 67 |
| Rear Exhaust mounting missing |7.1.1b| | 66 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 66 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 65 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 65 |
| Nearside Rear Trailing arm has excessive play in a pin/bush |2.4.G.2| | 65 |
| Centre Stop lamp not working |1.2.1b| | 65 |
| Nearside Front Windscreen wiper blade deteriorated |8.2.2| | 64 |
| Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 63 |
| Main beam `tell-tale` not working |1.7.4c| | 63 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 62 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 62 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 61 |
| Offside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 60 |
| Offside Front Windscreen wiper blade deteriorated |8.2.2| | 59 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 58 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 58 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 55 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 55 |