| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 324 |
| Brake pipe excessively corroded | 277 |
| Registration plate lamp issues | 221 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 210 |
| Windscreen wiper does not clear the windscreen effectively | 201 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 144 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 104 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 101 |
| Offside Stop lamp not working |1.2.1b| | 100 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 96 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 95 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 95 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 92 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 91 |
| Nearside Stop lamp not working |1.2.1b| | 89 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 86 |
| Nearside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 77 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 76 |
| Brakes imbalanced across an axle | 74 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 72 |
| Offside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 67 |
| Emissions not tested |7.0| | 64 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 64 |
| Nearside Front Front constant velocity joint gaiter split |2.5.C.1a| | 61 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 57 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 54 |
| Nearside Rear Stop lamp not working |1.2.1b| | 52 |
| Front brake disc in such a condition that it is seriously weakened | 51 |
| Registration plate issues | 48 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 47 |
| Offside Rear Stop lamp not working |1.2.1b| | 45 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 44 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 42 |
| Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 41 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 40 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 37 |
| Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 36 |
| Parking brake: efficiency below requirements |3.7.B.7| | 33 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 32 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 32 |
| Nearside Rear Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 28 |
| Anti-lock braking system warning lamp indicates an ABS fault | 27 |
| Offside Front Windscreen wiper blade deteriorated |8.2.2| | 26 |
| Offside Rear fog lamp not working |1.3.2b| | 24 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 23 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 23 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 23 |
| Direction indicators incorrect colour |1.4.A.2f| | 23 |
| Offside Front Front constant velocity joint gaiter split |2.5.C.1a| | 21 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 20 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 20 |
| Service brake: efficiency below requirements |3.7.B.7| | 20 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 19 |
| Nearside Front Windscreen wiper blade deteriorated |8.2.2| | 19 |
| Nearside Rear Radius arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 18 |
| Front Exhaust has part of the system excessively deteriorated |7.1.1a| | 18 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 17 |
| Offside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 17 |
| Rear Direction indicator incorrect colour |1.4.A.2f| | 17 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 16 |
| Offside Rear Radius arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 15 |
| Front brake application uneven | 15 |
| Direction indicator incorrect colour |1.4.A.2f| | 14 |
| Nearside Outer Front constant velocity joint gaiter split |2.5.C.1a| | 14 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 14 |
| Offside Rear Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 14 |
| Nearside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 14 |
| Offside Outer Front constant velocity joint gaiter split |2.5.C.1a| | 13 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 13 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 13 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 13 |
| Parking brake lever has no reserve travel |3.1.6b| | 13 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 13 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 12 |
| Rear parking brake recording little or no effort | 12 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 12 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 11 |
| Rear brake binding | 11 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 11 |
| Headlamp not in good working order adversely affecting beam image |1.2.4a| | 11 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 11 |
| Offside Side repeater incorrect colour |1.4.A.2f| | 10 |
| Offside front brake binding |3.7.B.1| | 10 |
| Windscreen wiper blade insecure | 10 |
| Nearside Headlamp not working on main beam |1.7.5a| | 10 |
| Offside Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 10 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 9 |
| Front Direction indicator incorrect colour |1.4.A.2f| | 9 |
| Windscreen has damage | 9 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 9 |
| Nearside Rear Trailing arm has excessive play in a pin/bush |2.4.G.2| | 9 |
| Offside Front brake disc excessively pitted |3.5.1h| | 9 |
| Nearside Rear Bonded suspension unit deteriorated and cannot function as intended |2.4.F.3| | 9 |
| Power steering pipe|s| or hose|s| leaking |2.3.3b| | 9 |
| Nearside Front Wheel nut|s| missing |4.2.A.1e| | 9 |
| Nearside Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 8 |
| Nearside Front Anti-roll bar linkage fractured |2.4.G.1| | 8 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 8 |
| Nearside Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 8 |
| Anti-lock braking system warning lamp does not illuminate |3.4.1b| | 8 |
| Offside Headlamp not working on main beam |1.7.5a| | 8 |
| Nearside Front constant velocity joint gaiter insecurely mounted to its housing |2.5.C.1a| | 8 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 8 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 8 |
| Offside Rear Trailing arm has excessive play in a pin/bush |2.4.G.2| | 8 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 7 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 7 |
| Centre Stop lamp insecure |1.2.1a| | 7 |
| Nearside Rear Trailing arm rubber bush bonding deteriorated resulting in excessive movement |2.4.G.2| | 7 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 7 |
| Offside Front front brake binding |3.7.B.1| | 7 |
| Offside front brake juddering severely |3.7.A.2b| | 6 |
| Nearside Rear Bonded suspension unit bonding failed and part of unit is likely to become displaced |2.4.F.2| | 6 |
| Nearside Front position lamp|s| not in good working order |function impaired| |1.1.4a| | 6 |
| Offside Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 6 |
| Offside Obligatory mirror insecure |8.1.1| | 6 |
| Exhaust tailpipe not capable of allowing the emission probe to be inserted |7.3.D.1| | 6 |
| Offside Front position lamp|s| not in good working order |function impaired| |1.1.4a| | 6 |
| Power steering component|s| leaking |2.3.3b| | 6 |
| Nearside Rear Suspension arm has excessive play in a pin/bush |2.4.G.2| | 6 |
| Offside Rear Wheel nut|s| missing |4.2.A.1e| | 6 |
| Centre Exhaust has part of the system excessively deteriorated |7.1.1a| | 6 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 5 |
| Windscreen wiper blade deteriorated |8.2.2| | 5 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 5 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 5 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 5 |
| Offside Rear Bonded suspension unit deteriorated and cannot function as intended |2.4.F.3| | 5 |
| Offside Headlamp aim not tested |1.8.A.1c| | 5 |
| Power steering pipe|s| or hose|s| leaking from a joint |2.3.3b| | 5 |
| Stop lamp not working |1.2.1b| | 5 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 5 |
| Rear Exhaust mounting missing |7.1.1b| | 5 |
| Nearside Side repeater incorrect colour |1.4.A.2f| | 5 |
| Offside Rear Trailing arm rubber bush bonding deteriorated resulting in excessive movement |2.4.G.2| | 5 |
| Nearside Front Front position lamp|s| not in good working order |function impaired| |1.1.4a| | 5 |