| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 2836 |
| Windscreen wiper does not clear the windscreen effectively | 2521 |
| Registration plate lamp issues | 2333 |
| Brake pipe excessively corroded | 1870 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1588 |
| Registration plate issues | 1259 |
| Nearside Headlamp not working on main beam |1.7.5a| | 969 |
| Rear parking brake recording little or no effort | 958 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 851 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 818 |
| Parking brake lever has no reserve travel |3.1.6b| | 687 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 551 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 540 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 529 |
| Nearside Stop lamp not working |1.2.1b| | 448 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 393 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 368 |
| Offside Stop lamp not working |1.2.1b| | 358 |
| Brakes imbalanced across an axle | 340 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 332 |
| Nearside Front Headlamp not working on main beam |1.7.5a| | 319 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 315 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 311 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 306 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 306 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 296 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 274 |
| Rear Exhaust system not adequately supported |7.1.1| | 269 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 262 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 242 |
| Offside Rear fog lamp not working |1.3.2b| | 236 |
| Windscreen has damage | 235 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 223 |
| Brake hose excessively deteriorated | 204 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 196 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 193 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 191 |
| Offside Headlamp not working on main beam |1.7.5a| | 185 |
| Front brake disc in such a condition that it is seriously weakened | 179 |
| Nearside Rear Stop lamp not working |1.2.1b| | 171 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 169 |
| Emissions not tested |7.0| | 167 |
| Anti-lock braking system warning lamp indicates an ABS fault | 161 |
| Rear brake disc in such a condition that it is seriously weakened | 160 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 155 |
| Offside Side repeater not working |1.4.A.2c| | 155 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 152 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 152 |
| Rear brake binding | 148 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 146 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 145 |
| Offside Rear Stop lamp not working |1.2.1b| | 143 |
| Nearside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 142 |
| Nearside Side repeater not working |1.4.A.2c| | 139 |
| Offside Rear Upper Suspension arm has excessive play in a pin/bush |2.4.G.2| | 133 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 131 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 130 |
| Nearside Rear Upper Suspension arm has excessive play in a pin/bush |2.4.G.2| | 129 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 109 |
| Windscreen wiper blade insecure | 109 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 107 |
| Rear fog lamp not working |1.3.2b| | 106 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 104 |
| Offside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 102 |
| Service brake: efficiency below requirements |3.7.B.7| | 99 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 99 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 97 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 96 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 95 |
| Rear Exhaust mounting missing |7.1.1b| | 95 |
| 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| | 93 |
| Exhaust system not adequately supported |7.1.1| | 91 |
| Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 89 |
| Nearside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 88 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 88 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 87 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 86 |
| 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| | 85 |
| Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 85 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 84 |
| Offside Rear Suspension arm has excessive play in a pin/bush |2.4.G.2| | 83 |
| Nearside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 82 |
| Nearside Rear Suspension arm has excessive play in a pin/bush |2.4.G.2| | 82 |
| Horn not working |1.6.2a| | 81 |
| Offside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 80 |
| Main beam `tell-tale` not working |1.7.4c| | 80 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 80 |
| Centre Stop lamp not working |1.2.1b| | 79 |
| Direction indicators incorrect colour |1.4.A.2f| | 79 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 79 |
| 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| | 78 |
| Offside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 78 |
| Offside Front Windscreen wiper blade deteriorated |8.2.2| | 78 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 75 |
| Rear Direction indicator incorrect colour |1.4.A.2f| | 74 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 74 |
| Offside Rear Shock absorber has negligible damping effect |2.7.5| | 74 |
| Front brake application uneven | 74 |
| Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 69 |
| 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| | 66 |
| Nearside Rear Shock absorber has negligible damping effect |2.7.5| | 66 |
| Nearside Front Windscreen wiper blade deteriorated |8.2.2| | 66 |
| Nearside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 62 |
| Nearside Front Wheel bolt|s| missing |4.2.A.1e| | 61 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 60 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 60 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 58 |
| Offside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 57 |