| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 613 |
| Windscreen wiper does not clear the windscreen effectively | 492 |
| Headlamp aim out of alignment | 438 |
| Parking brake: efficiency below requirements |3.7.B.7| | 210 |
| Brake pipe excessively corroded | 192 |
| Brakes imbalanced across an axle | 168 |
| Registration plate issues | 167 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 149 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 137 |
| Rear parking brake recording little or no effort | 128 |
| Rear brake binding | 114 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 108 |
| Parking brake lever has no reserve travel |3.1.6b| | 107 |
| Nearside Stop lamp not working |1.2.1b| | 106 |
| Offside Stop lamp not working |1.2.1b| | 103 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 100 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 76 |
| Nearside front brake binding |3.7.B.1| | 70 |
| Nearside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 66 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 60 |
| Offside front brake binding |3.7.B.1| | 59 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 59 |
| Offside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 58 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 57 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 54 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 52 |
| Offside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 49 |
| Front brake application uneven | 49 |
| Offside Front front brake binding |3.7.B.1| | 49 |
| Offside Rear Stop lamp not working |1.2.1b| | 49 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 48 |
| Nearside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 47 |
| Nearside Rear Stop lamp not working |1.2.1b| | 47 |
| Offside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 46 |
| Nearside Front front brake binding |3.7.B.1| | 44 |
| Nearside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 42 |
| Offside Rear Exhaust has a major leak of exhaust gases |7.1.2| | 38 |
| Rear brake disc in such a condition that it is seriously weakened | 37 |
| Nearside Rear Exhaust has a major leak of exhaust gases |7.1.2| | 35 |
| Windscreen has damage | 34 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 34 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 32 |
| Front brake disc in such a condition that it is seriously weakened | 29 |
| Service brake: efficiency below requirements |3.7.B.7| | 29 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 29 |
| Windscreen wiper blade insecure | 28 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 27 |
| Battery insecure |1.9.1| | 27 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 27 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 26 |
| Emissions not tested |7.0| | 26 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 23 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 23 |
| Mechanical brake component has restricted free movement | 22 |
| Anti-lock braking system warning lamp indicates an ABS fault | 22 |
| Offside Front coil spring fractured |2.4.C.1a| | 21 |
| Nearside Front Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 21 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 20 |
| Offside Rear fog lamp not working |1.3.2b| | 19 |
| Brake hydraulic reservoir fluid level below minimum level |3.6.G.1b| | 19 |
| Offside Front coil spring broken |2.4.C.1a| | 18 |
| Offside Front Lower Ball joint has excessive play |2.2.B.1f| | 18 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 17 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 17 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 16 |
| Brake fluid warning lamp illuminated |3.6.G.2| | 16 |
| Horn not working |1.6.2a| | 16 |
| Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 16 |
| Offside Front Lower Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 16 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 15 |
| Nearside Front Lower Ball joint has excessive play |2.2.B.1f| | 15 |
| Offside Front Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 15 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 13 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 13 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 13 |
| Nearside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 13 |
| Nearside Front Ball joint has excessive play |2.2.B.1f| | 13 |
| Offside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 13 |
| Nearside Front Lower Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 12 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 12 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 12 |
| Offside Front Direction indicator not working |1.4.A.2c| | 12 |
| Rear brake application uneven | 12 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 12 |
| Offside Front Windscreen wiper blade deteriorated |8.2.2| | 11 |
| Offside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 11 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 11 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 11 |
| Offside Front coil spring incomplete |2.4.C.1a| | 10 |
| Offside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 10 |
| Offside Front Brake hose twisted |found during steering lock to lock check| |2.2.D.2b| | 10 |
| Rear fog lamp tell tale not working |1.3.1b| | 10 |