| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 595 |
| Headlamp aim out of alignment | 483 |
| Brake pipe excessively corroded | 384 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 273 |
| Brakes imbalanced across an axle | 231 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 224 |
| Registration plate lamp issues | 187 |
| Registration plate issues | 140 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 125 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 121 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 117 |
| Offside Stop lamp not working |1.2.1b| | 110 |
| Nearside Stop lamp not working |1.2.1b| | 106 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 98 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 97 |
| Emissions not tested |7.0| | 93 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 82 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 77 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 61 |
| Parking brake: efficiency below requirements |3.7.B.7| | 61 |
| Offside Rear Stop lamp not working |1.2.1b| | 54 |
| Rear brake application uneven | 50 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 48 |
| Front brake application uneven | 45 |
| Front brake disc in such a condition that it is seriously weakened | 44 |
| Rear parking brake recording little or no effort | 42 |
| Service brake: efficiency below requirements |3.7.B.7| | 39 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 37 |
| Horn not working |1.6.2a| | 37 |
| Anti-lock braking system warning lamp indicates an ABS fault | 34 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 34 |
| Rear fog lamp not working |1.3.2b| | 33 |
| Offside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 31 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 31 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 31 |
| Nearside Rear Stop lamp not working |1.2.1b| | 30 |
| Nearside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 29 |
| Windscreen wiper blade insecure | 28 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 27 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 27 |
| Offside Rear fog lamp not working |1.3.2b| | 26 |
| Brake pedal spongy |3.3.B.1b| | 26 |
| Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 25 |
| Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 25 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 25 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 24 |
| Exhaust emits excessive dense blue smoke during acceleration |7.3.A.2c| | 24 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 23 |
| Nearside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 23 |
| Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 22 |
| 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| | 22 |
| Offside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 22 |
| Offside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 22 |
| Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 21 |
| Nearside front brake binding |3.7.B.1| | 21 |
| Nearside Outer Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 21 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 21 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 20 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 20 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 20 |
| Offside front brake binding |3.7.B.1| | 20 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 19 |
| Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 18 |
| Nearside Windscreen wiper blade deteriorated |8.2.2| | 18 |
| Battery insecure |1.9.1| | 18 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 17 |
| Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 17 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 17 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 17 |
| Windscreen has damage | 17 |
| Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 16 |
| Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 16 |
| Offside Front Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 16 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 16 |
| Offside Front front brake binding |3.7.B.1| | 16 |
| Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 15 |
| Offside Obligatory mirror insecure |8.1.1| | 15 |
| Nearside Front Lower Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 15 |
| Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 14 |
| Offside Outer Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 14 |
| Bonnet cannot be secured in the closed position |8.4.1| | 14 |
| Offside Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 14 |
| Offside Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 14 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 13 |
| Nearside Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 13 |
| Emissions not tested |7.3.A.1| | 13 |
| Rear fog lamp insecure |1.3.2a| | 13 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 13 |
| Offside Front Windscreen wiper blade deteriorated |8.2.2| | 12 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 12 |
| Offside Front Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 12 |
| Exhaust system not adequately supported |7.1.1| | 12 |
| Rear Exhaust system not adequately supported |7.1.1| | 12 |
| Offside Front Lower Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 11 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 11 |
| Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 11 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 11 |
| Offside Outer Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 11 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 11 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 10 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 10 |
| Nearside Front Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 10 |
| Parking brake lever has no reserve travel |3.1.6b| | 10 |
| 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| | 10 |
| Front brake excessively fluctuating | 10 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 10 |
| Rear brake binding | 10 |
| Offside Front Outer Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 10 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 10 |
| Offside Front brake disc excessively pitted |3.5.1h| | 10 |
| Centre Exhaust system not adequately supported |7.1.1| | 10 |
| Exhaust tailpipe not capable of allowing the emission probe to be inserted |7.3.D.1| | 9 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 9 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 9 |
| Brake hose excessively deteriorated | 9 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 9 |
| Offside Rear fog lamp insecure |1.3.2a| | 9 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 9 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 9 |
| Offside Inner Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 9 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 9 |
| Nearside Front Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 9 |
| Centre Stop lamp not working |1.2.1b| | 9 |
| Nearside Outer Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 9 |
| Nearside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 9 |
| Offside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 9 |