| Most common failures | No# failures |
|---|
| Brake pipe excessively corroded | 199 |
| Registration plate lamp issues | 113 |
| Windscreen wiper does not clear the windscreen effectively | 97 |
| Headlamp aim out of alignment | 93 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 59 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 50 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 39 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 38 |
| Registration plate issues | 36 |
| Brakes imbalanced across an axle | 30 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 26 |
| Anti-lock braking system warning lamp indicates an ABS fault | 25 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 22 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 22 |
| Nearside Stop lamp not working |1.2.1b| | 21 |
| Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 19 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 15 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 15 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 15 |
| Offside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 13 |
| Offside Stop lamp not working |1.2.1b| | 13 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 11 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 11 |
| Front brake application uneven | 11 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 10 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 10 |
| Emissions not tested |7.0| | 10 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 9 |
| Nearside Rear Stop lamp not working |1.2.1b| | 9 |
| Offside Rear Stop lamp not working |1.2.1b| | 9 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 8 |
| Rear brake application uneven | 8 |
| Parking brake: efficiency below requirements |3.7.B.7| | 8 |
| Nearside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 8 |
| Service brake: efficiency below requirements |3.7.B.7| | 8 |
| Offside Rear fog lamp not working |1.3.2b| | 7 |
| Centre Stop lamp not working |1.2.1b| | 7 |
| Rear parking brake recording little or no effort | 7 |
| Rear brake binding | 7 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 7 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 6 |
| Windscreen wiper blade insecure | 6 |
| Offside Rear Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 6 |
| Front brake disc in such a condition that it is seriously weakened | 5 |
| Rear fog lamp tell tale not working |1.3.1b| | 4 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 4 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 4 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 4 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 4 |
| Nearside Rear Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 4 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 4 |
| Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 4 |
| Nearside Rear Anti-roll bar rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 4 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 4 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 3 |
| Nearside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 3 |
| Offside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 3 |
| Nearside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 3 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 3 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 3 |
| Front position lamp|s| not working |1.1.A.3b| | 3 |
| Nearside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 3 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 3 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 3 |
| Offside Rear Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 3 |
| Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 3 |
| Offside Front Windscreen wiper blade deteriorated |8.2.2| | 3 |
| Offside Rear Anti-roll bar rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 3 |
| Anti-lock braking system warning lamp does not illuminate |3.4.1b| | 3 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 3 |
| Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 3 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 3 |
| Nearside Front Front constant velocity joint gaiter split |2.5.C.1a| | 2 |
| Nearside front brake juddering severely |3.7.A.2b| | 2 |
| Offside front brake juddering severely |3.7.A.2b| | 2 |
| Brake load sensing valve seized |3.6.E.3| | 2 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 2 |
| Nearside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 2 |
| Offside Headlamp not working on main beam |1.7.5a| | 2 |
| Offside Front Body has a sharp edge caused by damage |6.1.C.1| | 2 |
| Offside Rear Wheel nut|s| missing |4.2.A.1e| | 2 |
| Offside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 2 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 2 |
| Brake pedal anti-slip provision missing |3.3.A.1b| | 2 |
| Centre Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 2 |
| Offside Rear Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 2 |
| Front front brake juddering severely |3.7.A.2b| | 2 |
| Offside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 2 |
| Offside Front Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 2 |
| Exhaust system not adequately supported |7.1.1| | 2 |
| Offside Front Steering arm has relative movement at its fixings |2.2.B.1h| | 2 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 2 |
| Nearside Inner Rear Anti-roll bar rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 2 |
| Offside Inner Rear Anti-roll bar rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 2 |
| Hazard warning switch faulty |1.4.B.1d| | 2 |
| Offside Rear Anti-roll bar has excessive play in a ball joint |2.4.G.2| | 2 |
| Nearside Windscreen wiper not operating automatically when switched on |8.2.1b| | 2 |
| Front Front position lamp|s| not working |1.1.A.3b| | 2 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 2 |
| Windscreen washer not working | 2 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 2 |
| Offside Obligatory mirror missing |8.1.1| | 2 |
| Centre Exhaust has part of the system excessively deteriorated |7.1.1a| | 2 |
| Nearside Front suspension has excessive movement at a wishbone pin or bush |2.5.A.1c| | 2 |
| Nearside Front Drag link end ball joint has excessive play |2.2.B.1f| | 2 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 2 |
| Nearside Headlamp not working on main beam |1.7.5a| | 2 |
| Fuel tank leaking |7.2.3| | 2 |
| Offside Rear Shock absorber has negligible damping effect |2.7.5| | 2 |
| Windscreen has damage | 2 |
| Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 2 |
| Brake hose excessively deteriorated | 2 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 2 |
| Power steering malfunctioning |2.3.3a| | 2 |