| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 14 |
| Registration plate lamp issues | 10 |
| Headlamp aim out of alignment | 8 |
| Brake pipe excessively corroded | 7 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 7 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 6 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 5 |
| Nearside Stop lamp not working |1.2.1b| | 4 |
| Front brake application uneven | 4 |
| Brakes imbalanced across an axle | 4 |
| Offside Stop lamp not working |1.2.1b| | 4 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 3 |
| Offside Rear fog lamp not working |1.3.2b| | 3 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 3 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 3 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 2 |
| Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 2 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 2 |
| Emissions not tested |7.0| | 2 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 2 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 2 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 2 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 1 |
| Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 1 |
| Nearside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Obligatory mirror seriously deteriorated, affecting the rear view |8.1.2a| | 1 |
| Nearside Front Lower Suspension arm locating pin retaining device missing |2.4.G.3b| | 1 |
| Offside Front Lower Suspension arm locating pin retaining device missing |2.4.G.3b| | 1 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Front Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 1 |
| Rear brake application uneven | 1 |
| Offside Front Headlamp insecure |1.7.3| | 1 |
| Offside Rear Stop lamp not working |1.2.1b| | 1 |
| Windscreen wiper blade insecure | 1 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 1 |
| Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 1 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Nearside Front Front constant velocity joint gaiter split |2.5.C.1a| | 1 |
| Offside Front Sub-frame worn and seriously weakened |2.4.G.2| | 1 |
| Offside Front Suspension arm corroded and seriously weakened |2.4.G.1| | 1 |
| Rear parking brake recording little or no effort | 1 |
| Offside Rear Seat belt has a cut which has significantly weakened the webbing |5.2.2a| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Rear Seat belt retracting mechanism defective |5.2.5b| | 1 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 1 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Side repeater incorrect colour |1.4.A.2f| | 1 |
| Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` |8.3.1b| | 1 |
| Offside Side repeater incorrect colour |1.4.A.2f| | 1 |
| Nearside Front All position lamps not in good working order |function impaired| |1.1.A.2a| | 1 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Horn not working |1.6.2a| | 1 |
| Rear Direction indicator incorrect colour |1.4.A.2f| | 1 |
| Nearside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Nearside Side repeater not working |1.4.A.2c| | 1 |
| Exhaust tailpipe not capable of allowing the emission probe to be inserted |7.3.D.1| | 1 |
| Nearside Headlamp has a product on the light source so that the light output is severely reduced |1.7.5a| | 1 |
| Offside Front Macpherson strut insecure |2.4.G.1| | 1 |
| Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 1 |