| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 749 |
| Headlamp aim out of alignment | 400 |
| Registration plate lamp issues | 186 |
| Brake pipe excessively corroded | 175 |
| Brakes imbalanced across an axle | 168 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 126 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 87 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 81 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 69 |
| Front brake disc in such a condition that it is seriously weakened | 53 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 52 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 41 |
| Nearside Stop lamp not working |1.2.1b| | 37 |
| Emissions not tested |7.0| | 37 |
| Offside Stop lamp not working |1.2.1b| | 36 |
| Front brake application uneven | 34 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 34 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 34 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 31 |
| Parking brake: efficiency below requirements |3.7.B.7| | 29 |
| Centre Stop lamp not working |1.2.1b| | 29 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 28 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 28 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 27 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 26 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 26 |
| Registration plate issues | 26 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 23 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 23 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 23 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 22 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 22 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 21 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 21 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 21 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 21 |
| Offside front brake binding |3.7.B.1| | 21 |
| Nearside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 20 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 20 |
| Nearside front brake binding |3.7.B.1| | 19 |
| Rear parking brake recording little or no effort | 18 |
| Emissions not tested |7.3.A.1| | 18 |
| Rear Exhaust system not adequately supported |7.1.1| | 18 |
| Nearside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 16 |
| Front brake excessively fluctuating | 15 |
| Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` |8.3.1b| | 14 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 14 |
| Brake pedal spongy |3.3.B.1b| | 14 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 14 |
| Rear Exhaust has a part missing |7.1.1a| | 14 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 13 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 13 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 13 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength |5.3.6 |a| |i|| | 13 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 13 |
| Windscreen wiper blade insecure | 13 |
| Offside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 13 |
| Exhaust system not adequately supported |7.1.1| | 13 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 13 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 12 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 12 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 12 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 12 |
| Offside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 12 |
| Mechanical brake component has restricted free movement | 12 |
| Parking brake lever has no reserve travel |3.1.6b| | 11 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 11 |
| Offside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 11 |
| Emissions not tested (8.2.1.2 (d)) | 11 |
| Offside Front Lower Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 11 |
| Nearside Headlamp insecure |1.7.3| | 11 |
| Exhaust has a part missing |7.1.1a| | 11 |
| Nearside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 10 |
| Offside Front front brake binding |3.7.B.1| | 10 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 10 |
| Offside Front brake disc excessively pitted |3.5.1h| | 10 |
| Offside Rear Vehicle structure corroded to the extent that the rigidity of the assembly is significantly reduced (6.1.1 (c) (i)) | 10 |
| Nearside Front Lower Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 10 |
| Centre Exhaust has part of the system excessively deteriorated |7.1.1a| | 10 |
| Fuel tank leaking |7.2.3| | 10 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 9 |
| Windscreen washer not working | 9 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 9 |
| Offside Rear Trailing arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 9 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 9 |
| Nearside Rear Stop lamp not working |1.2.1b| | 9 |
| Nearside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 9 |
| Exhaust tailpipe not capable of allowing the emission probe to be inserted |7.3.D.1| | 9 |
| Nearside Front Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 8 |
| Rear brake binding | 8 |
| Nearside Front Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 8 |
| Offside Rear Suspension spring mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 8 |
| Offside Rear Shock absorbers has a serious fluid leak | 8 |
| Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 8 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 8 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 8 |
| Nearside Rear Shock absorbers has a serious fluid leak | 8 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 8 |
| Brake pedal has insufficient reserve movement |3.3.A.5| | 8 |
| Horn not working |1.6.2a| | 8 |
| Offside Rear Stop lamp not working |1.2.1b| | 8 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 8 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 8 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 8 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 8 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 8 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 8 |