| Most common failures | No# failures |
|---|
| Brake pipe excessively corroded | 496 |
| Headlamp aim out of alignment | 386 |
| Registration plate lamp issues | 376 |
| Windscreen wiper does not clear the windscreen effectively | 314 |
| Brakes imbalanced across an axle | 179 |
| Registration plate issues | 170 |
| Offside Rear fog lamp not working |1.3.2b| | 114 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 91 |
| Nearside Stop lamp not working |1.2.1b| | 88 |
| Offside Stop lamp not working |1.2.1b| | 83 |
| Parking brake: efficiency below requirements |3.7.B.7| | 61 |
| Rear parking brake recording little or no effort | 60 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 55 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 55 |
| Rear fog lamp not working |1.3.2b| | 55 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 54 |
| Rear Exhaust system not adequately supported |7.1.1| | 48 |
| Centre Stop lamp not working |1.2.1b| | 46 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 45 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 41 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 41 |
| Rear brake application uneven | 41 |
| Nearside Rear Stop lamp not working |1.2.1b| | 41 |
| Battery insecure |1.9.1| | 40 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 38 |
| Offside Rear Stop lamp not working |1.2.1b| | 36 |
| Horn not working |1.6.2a| | 35 |
| Parking brake lever has no reserve travel |3.1.6b| | 35 |
| Front brake disc in such a condition that it is seriously weakened | 35 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 34 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 33 |
| Service brake: efficiency below requirements |3.7.B.7| | 33 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 31 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 31 |
| Nearside Side repeater not working |1.4.A.2c| | 30 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 29 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 28 |
| Offside Side repeater not working |1.4.A.2c| | 27 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 26 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 25 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 25 |
| Windscreen has damage | 24 |
| Windscreen washer not working | 24 |
| Front Steering damper leaking oil |2.2.C.1f| | 24 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 23 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 23 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 22 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 21 |
| Steering damper leaking oil |2.2.C.1f| | 20 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 20 |
| Emissions not tested |7.0| | 20 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 19 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 19 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 18 |
| Brake hose excessively deteriorated | 18 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 17 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 17 |
| Direction indicators not working |1.4.A.2c| | 17 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 17 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 17 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 17 |
| Rear Rear fog lamp not working |1.3.2b| | 17 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 16 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 15 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 15 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 15 |
| Nearside Front drive shaft coupling is excessively worn |2.5.C.1c| | 15 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 14 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 14 |
| Nearside Headlamp not working on main beam |1.7.5a| | 14 |
| Rear brake binding | 14 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 14 |
| Power steering component|s| leaking |2.3.3b| | 14 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 14 |
| Nearside Front Side repeater not working |1.4.A.2c| | 14 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 14 |
| Nearside Front Anti-roll bar linkage insecure |2.4.G.1| | 14 |
| Nearside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 13 |
| Nearside front brake binding |3.7.B.1| | 13 |
| Steering box has a significant oil leak |2.2.D.2e| | 13 |
| Mechanical brake component has restricted free movement | 12 |
| Offside Front Direction indicator not working |1.4.A.2c| | 12 |
| Offside Front Front drive shaft coupling is excessively worn |2.5.C.1c| | 12 |
| Windscreen wiper blade insecure | 12 |
| Offside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 12 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 12 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 12 |
| Offside Front brake disc excessively pitted |3.5.1h| | 12 |
| Offside Front Anti-roll bar linkage insecure |2.4.G.1| | 12 |
| Offside Rear Braking system leaking |3.6.A.1| | 12 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 12 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 12 |
| Offside Front drive shaft coupling is excessively worn |2.5.C.1c| | 12 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 12 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 11 |
| Hazard warning lamps inoperative (4.4.1 (e)) | 11 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 11 |
| Offside Headlamp insecure |1.7.3| | 11 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 11 |
| Nearside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 11 |
| Stop lamp not working |1.2.1b| | 11 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 11 |
| Offside Front Side repeater not working |1.4.A.2c| | 11 |
| Offside front brake binding |3.7.B.1| | 10 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 10 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 10 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 10 |
| Offside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 10 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 10 |
| Hazard warning switch faulty |1.4.B.1d| | 10 |
| Emissions not tested (8.2.1.2 (d)) | 10 |
| Service brake: efficiency below requirements |3.7.C.1a| | 10 |
| Offside Headlamp not working on main beam |1.7.5a| | 10 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 10 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 10 |
| Front brake application uneven | 10 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 10 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 10 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 10 |
| Nearside Front Anti-roll bar linkage fractured |2.4.G.1| | 9 |
| Offside Front Drive shaft uj which forms part of the suspension has excessive play in a universal joint |2.4.G.4b| | 9 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 9 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 9 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 9 |
| Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b)) | 9 |
| Offside Rear wheel cylinder leaking |3.6.A.1| | 9 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 9 |
| Nearside Headlamp insecure |1.7.3| | 9 |
| Nearside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 9 |
| Brake performance not tested |3.7.A.1| | 9 |
| Rear fog lamp not working |4.5.1 |a| |ii|| | 9 |
| Offside Front front brake binding |3.7.B.1| | 9 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 9 |
| Nearside Rear Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 9 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 8 |
| Offside Obligatory mirror missing |8.1.1| | 8 |
| Exhaust system not adequately supported |7.1.1| | 8 |
| Horn not working (7.7 (a)) | 8 |
| Offside Rear Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 8 |
| Power steering component|s| leaking from a failed seal |2.3.3b| | 8 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 8 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 8 |
| Central Stop lamp(s) not working (4.3.1 (a) (ii)) | 8 |
| Nearside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 8 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 8 |
| Hazard warning lamps inoperative |1.4.B.1b| | 8 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 8 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 8 |
| Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 8 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 8 |
| Offside Rear Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 8 |
| Rear fog lamp tell tale not working |1.3.1b| | 8 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 8 |
| Offside Rear brake drum contaminated by oil |3.5.1h| | 8 |
| Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 8 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 8 |