| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 527 |
| Headlamp aim out of alignment | 292 |
| Brake pipe excessively corroded | 103 |
| Registration plate lamp issues | 94 |
| Brakes imbalanced across an axle | 76 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 71 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 53 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 47 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 46 |
| Front brake disc in such a condition that it is seriously weakened | 41 |
| Nearside Stop lamp not working |1.2.1b| | 32 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 30 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 28 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 27 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 26 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 23 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 22 |
| Offside Stop lamp not working |1.2.1b| | 22 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 21 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 18 |
| Front brake excessively fluctuating | 18 |
| Registration plate issues | 18 |
| Emissions not tested (8.2.1.2 (d)) | 17 |
| Front brake application uneven | 16 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 16 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 15 |
| Centre Stop lamp not working |1.2.1b| | 15 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 15 |
| Offside front brake binding |3.7.B.1| | 15 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 15 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 15 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 14 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 13 |
| Emissions not tested |7.0| | 13 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 13 |
| Exhaust system not adequately supported |7.1.1| | 13 |
| Windscreen wiper blade insecure | 13 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 12 |
| Front brake disc excessively pitted |3.5.1h| | 12 |
| Offside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 12 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 11 |
| Rear Exhaust has a part missing |7.1.1a| | 11 |
| Offside Rear Stop lamp not working |1.2.1b| | 11 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 11 |
| Emissions not tested |7.3.A.1| | 11 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 11 |
| Rear Exhaust system not adequately supported |7.1.1| | 10 |
| Nearside Rear Stop lamp not working |1.2.1b| | 10 |
| Nearside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 10 |
| Exhaust tailpipe not capable of allowing the emission probe to be inserted |7.3.D.1| | 9 |
| Offside Front brake disc excessively pitted |3.5.1h| | 9 |
| Windscreen washer not working | 9 |
| Nearside front brake binding |3.7.B.1| | 9 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 9 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 9 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 9 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 8 |
| Nearside Rear Axle swivel pins and bushes swivel pin and/or bush excessively worn (5.1.2 (b) (i)) | 8 |
| Offside Front front brake binding |3.7.B.1| | 8 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 8 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 8 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 8 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 8 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 8 |
| Nearside Headlamp insecure |1.7.3| | 8 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 8 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| 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| | 7 |
| Offside Rear Axle swivel pins and bushes swivel pin and/or bush excessively worn (5.1.2 (b) (i)) | 7 |
| Nearside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 7 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 7 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 7 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength chassis (5.3.6 (a) (i)) | 7 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 7 |
| Central Stop lamp not working |1.2.1b| | 7 |
| Stop lamp not working |1.2.1b| | 7 |
| Offside Front Lower Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 7 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 6 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 6 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 6 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 6 |
| Offside Rear Integral body structure or chassis has excessive corrosion, seriously affecting its strength within 30cm of a body mounting (6.2.2 (d) (i)) | 6 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 6 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 6 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 6 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 6 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 6 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 6 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 6 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 6 |
| Anti-lock braking system warning lamp indicates an ABS fault | 6 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 6 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 6 |
| Offside Headlamp insecure |1.7.3| | 6 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 6 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 6 |
| Brake pedal spongy |3.3.B.1b| | 6 |