| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 2658 |
| Headlamp aim out of alignment | 1982 |
| Windscreen wiper does not clear the windscreen effectively | 1902 |
| Brake pipe excessively corroded | 1640 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1009 |
| Registration plate issues | 828 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 622 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 609 |
| Rear parking brake recording little or no effort | 577 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 494 |
| Parking brake lever has no reserve travel |3.1.6b| | 474 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 455 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 362 |
| Nearside Headlamp not working on main beam |1.7.5a| | 351 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 350 |
| Nearside Stop lamp not working |1.2.1b| | 328 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 305 |
| Offside Rear fog lamp not working |1.3.2b| | 298 |
| Brakes imbalanced across an axle | 270 |
| Offside Stop lamp not working |1.2.1b| | 264 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 242 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 235 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 205 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 204 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 198 |
| Rear Exhaust system not adequately supported |7.1.1| | 195 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 189 |
| Windscreen has damage | 187 |
| Brake hose excessively deteriorated | 187 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 183 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 159 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 156 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 148 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 147 |
| Rear brake binding | 144 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 140 |
| Nearside Rear Upper Suspension arm has excessive play in a pin/bush |2.4.G.2| | 138 |
| Emissions not tested |7.0| | 137 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 126 |
| Offside Rear Upper Suspension arm has excessive play in a pin/bush |2.4.G.2| | 123 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 122 |
| Horn not working |1.6.2a| | 119 |
| Rear brake disc in such a condition that it is seriously weakened | 118 |
| Nearside Rear Stop lamp not working |1.2.1b| | 115 |
| Nearside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 113 |
| Nearside Front Headlamp not working on main beam |1.7.5a| | 111 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 110 |
| Offside Rear Stop lamp not working |1.2.1b| | 104 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 100 |
| Direction indicators incorrect colour |1.4.A.2f| | 97 |
| Windscreen wiper blade insecure | 96 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 95 |
| Front brake disc in such a condition that it is seriously weakened | 92 |
| Nearside Rear Suspension arm has excessive play in a pin/bush |2.4.G.2| | 88 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 85 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 83 |
| Offside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 82 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 81 |
| Rear fog lamp not working |1.3.2b| | 81 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 80 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 79 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 77 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 76 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 76 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 74 |
| Rear Direction indicator incorrect colour |1.4.A.2f| | 73 |
| Offside Rear Suspension arm has excessive play in a pin/bush |2.4.G.2| | 73 |
| Offside Side repeater not working |1.4.A.2c| | 73 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 72 |
| Service brake: efficiency below requirements |3.7.B.7| | 71 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 70 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 70 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 69 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 68 |
| Rear brake application uneven | 67 |
| Nearside Front Windscreen wiper blade deteriorated |8.2.2| | 65 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 65 |
| Rear Direction indicators incorrect colour |1.4.A.2f| | 64 |
| 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| | 62 |
| Offside Front Windscreen wiper blade deteriorated |8.2.2| | 60 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 60 |
| 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| | 60 |
| Rear Exhaust mounting missing |7.1.1b| | 60 |
| Nearside Side repeater not working |1.4.A.2c| | 58 |
| Anti-lock braking system warning lamp indicates an ABS fault | 58 |
| Front brake application uneven | 58 |
| Nearside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 58 |
| Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 56 |
| Exhaust system not adequately supported |7.1.1| | 55 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 54 |
| Exhaust emits excessive dense blue smoke during acceleration |7.3.A.2c| | 54 |
| Offside Headlamp not working on main beam |1.7.5a| | 54 |
| Centre Stop lamp emits other than a steady red light |1.2.1e| | 54 |
| Offside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 52 |
| Nearside Front Wheel bolt|s| missing |4.2.A.1e| | 52 |
| Offside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 51 |
| Offside Obligatory mirror insecure |8.1.1| | 49 |
| 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| | 45 |
| 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| | 45 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 43 |
| Nearside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 43 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 42 |
| Nearside Rear Wheel bolt|s| missing |4.2.A.1e| | 42 |
| Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 42 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 41 |