| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 619 |
| Headlamp aim out of alignment | 325 |
| Windscreen wiper does not clear the windscreen effectively | 283 |
| Brake pipe excessively corroded | 223 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 158 |
| Brakes imbalanced across an axle | 145 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 113 |
| Registration plate issues | 104 |
| Brake hose excessively deteriorated | 93 |
| Offside Stop lamp not working |1.2.1b| | 85 |
| Nearside Stop lamp not working |1.2.1b| | 66 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 52 |
| Front Exhaust system not adequately supported |7.1.1| | 51 |
| Centre Stop lamp not working |1.2.1b| | 51 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 50 |
| Anti-lock braking system warning lamp indicates an ABS fault | 49 |
| Parking brake: efficiency below requirements |3.7.B.7| | 47 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 46 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 45 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 45 |
| Offside Rear Stop lamp not working |1.2.1b| | 44 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 36 |
| Nearside Rear Stop lamp not working |1.2.1b| | 32 |
| Exhaust system not adequately supported |7.1.1| | 30 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 26 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 25 |
| Front brake application uneven | 25 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 19 |
| Windscreen has damage | 19 |
| Offside Rear fog lamp not working |1.3.2b| | 19 |
| Front brake disc in such a condition that it is seriously weakened | 19 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 18 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 17 |
| Rear parking brake recording little or no effort | 16 |
| Centre Rear Stop lamp not working |1.2.1b| | 16 |
| Stop lamp not working |1.2.1b| | 16 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 15 |
| Offside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 15 |
| Front position lamp|s| not working |1.1.A.3b| | 14 |
| Battery insecure |1.9.1| | 13 |
| Parking brake lever has no reserve travel |3.1.6b| | 13 |
| Horn not working |1.6.2a| | 12 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 11 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 11 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 11 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 11 |
| Front Front position lamp|s| not working |1.1.A.3b| | 10 |
| Centre Upper Stop lamp not working |1.2.1b| | 10 |
| Service brake: efficiency below requirements |3.7.B.7| | 10 |
| Offside Front front brake binding |3.7.B.1| | 10 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 9 |
| Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 9 |
| Windscreen wiper blade insecure | 9 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 9 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 9 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 9 |
| Rear fog lamp not working |1.3.2b| | 8 |
| Exhaust emits an excessive level of metered smoke for a non-turbo charged engine |7.4.B.3b| | 8 |
| Indicator switch faulty |1.4.A.1| | 8 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 8 |
| Rear brake application uneven | 7 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 7 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 7 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 7 |
| Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 7 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 7 |
| Offside Front brake disc excessively pitted |3.5.1h| | 7 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 7 |
| Offside Headlamp not working on main beam |1.7.5a| | 7 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 7 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 7 |
| Fuel cap/sealing device missing |7.2.4a| | 7 |
| Emissions not tested |7.0| | 7 |
| Nearside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 7 |
| Nearside Inner Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 7 |
| Anti-lock braking system warning lamp does not illuminate |3.4.1b| | 6 |
| Rear brake binding | 6 |
| Nearside Front Front constant velocity joint gaiter split |2.5.C.1a| | 6 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 6 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 6 |
| Front brake excessively fluctuating | 6 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 6 |
| Offside front brake binding |3.7.B.1| | 6 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 6 |
| Nearside Headlamp aim beam image kick up to the offside |1.8| | 6 |
| Offside Front Inner Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 6 |
| Offside Front Windscreen wiper blade deteriorated |8.2.2| | 6 |
| Offside Headlamp insecure |1.7.3| | 6 |
| Offside Inner Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 6 |