| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 550 |
| Headlamp aim out of alignment | 468 |
| Registration plate lamp issues | 431 |
| Parking brake: efficiency below requirements |3.7.B.7| | 257 |
| Registration plate issues | 238 |
| Rear parking brake recording little or no effort | 189 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 177 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 153 |
| Brakes imbalanced across an axle | 141 |
| Anti-lock braking system warning lamp indicates an ABS fault | 133 |
| Brake pipe excessively corroded | 89 |
| Offside Stop lamp not working |1.2.1b| | 86 |
| Nearside Stop lamp not working |1.2.1b| | 86 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 81 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 81 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 80 |
| Nearside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 68 |
| Parking brake lever has no reserve travel |3.1.6b| | 67 |
| Nearside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 64 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 61 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 58 |
| Battery insecure |1.9.1| | 55 |
| Offside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 54 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 53 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 53 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 48 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 43 |
| Offside Rear Stop lamp not working |1.2.1b| | 43 |
| Offside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 40 |
| Nearside Rear Stop lamp not working |1.2.1b| | 40 |
| Rear brake disc in such a condition that it is seriously weakened | 40 |
| Rear brake binding | 39 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 38 |
| Bonnet cannot be secured in the closed position |8.4.1| | 35 |
| Brake fluid warning lamp illuminated |3.6.G.2| | 34 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 33 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 32 |
| Windscreen has damage | 32 |
| Front brake application uneven | 31 |
| Offside front brake binding |3.7.B.1| | 27 |
| Nearside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 27 |
| Offside Rear fog lamp not working |1.3.2b| | 27 |
| Offside Rear Exhaust has a major leak of exhaust gases |7.1.2| | 26 |
| Offside Rear coil spring broken |2.4.C.1a| | 26 |
| Nearside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 25 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 25 |
| Nearside front brake binding |3.7.B.1| | 24 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 23 |
| Offside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 23 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 23 |
| Front brake disc in such a condition that it is seriously weakened | 21 |
| Brake hydraulic reservoir fluid level below minimum level |3.6.G.1b| | 21 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 20 |
| Nearside Rear coil spring broken |2.4.C.1a| | 20 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 20 |
| Emissions not tested |7.0| | 20 |
| Offside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 19 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 19 |
| Windscreen wiper blade insecure | 19 |
| Rear brake application uneven | 19 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 18 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 18 |
| Nearside Rear Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 18 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 18 |
| Service brake: efficiency below requirements |3.7.B.7| | 18 |
| Offside Rear coil spring incomplete |2.4.C.1a| | 17 |
| Nearside Front front brake binding |3.7.B.1| | 17 |
| Offside Rear Wheel nut|s| missing |4.2.A.1e| | 17 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 17 |
| Nearside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 17 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 16 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 16 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 16 |
| Brake pedal spongy |3.3.B.1b| | 16 |
| Horn not working |1.6.2a| | 16 |
| Front brake excessively fluctuating | 15 |
| Nearside Rear Exhaust has a major leak of exhaust gases |7.1.2| | 15 |
| Nearside Headlamp not working on main beam |1.7.5a| | 15 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 15 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 14 |
| Offside Rear coil spring fractured |2.4.C.1a| | 14 |
| Offside Rear Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 14 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 14 |
| Offside Front position lamp|s| incorrect colour |1.1.A.3e| | 14 |
| Electronic stability system warning lamp indicates a fault |3.4.1c| | 14 |
| Mechanical brake component has restricted free movement | 14 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 14 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 13 |
| Rear fog lamp not working |1.3.2b| | 13 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 13 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 13 |
| Nearside Rear coil spring fractured |2.4.C.1a| | 12 |
| Nearside Front Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 12 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 12 |
| Nearside Front position lamp|s| incorrect colour |1.1.A.3e| | 12 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 12 |
| Offside Front front brake binding |3.7.B.1| | 12 |
| Nearside Rear Wheel nut|s| missing |4.2.A.1e| | 12 |
| Front position lamp|s| not working |1.1.A.3b| | 11 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 11 |
| Nearside Rear coil spring incomplete |2.4.C.1a| | 11 |
| Nearside Front Wheel nut|s| missing |4.2.A.1e| | 11 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 11 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 11 |