| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 617 |
| Headlamp aim out of alignment | 389 |
| Brake pipe excessively corroded | 372 |
| Registration plate lamp issues | 304 |
| Brakes imbalanced across an axle | 204 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 195 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 124 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 111 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 105 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 104 |
| Offside Stop lamp not working |1.2.1b| | 104 |
| Nearside Stop lamp not working |1.2.1b| | 92 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 92 |
| Registration plate issues | 89 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 82 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 79 |
| Emissions not tested |7.0| | 57 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 54 |
| Offside Rear Stop lamp not working |1.2.1b| | 51 |
| Front brake disc in such a condition that it is seriously weakened | 51 |
| Front brake application uneven | 49 |
| Nearside Rear Stop lamp not working |1.2.1b| | 47 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 40 |
| Offside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 32 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 32 |
| Rear brake application uneven | 30 |
| Horn not working |1.6.2a| | 29 |
| Offside Obligatory mirror insecure |8.1.1| | 28 |
| Parking brake: efficiency below requirements |3.7.B.7| | 27 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 26 |
| Anti-lock braking system warning lamp indicates an ABS fault | 25 |
| Brake pedal spongy |3.3.B.1b| | 24 |
| Nearside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 22 |
| Windscreen wiper blade insecure | 21 |
| Offside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 20 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 20 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 19 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 19 |
| Offside Front brake disc excessively pitted |3.5.1h| | 19 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 18 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 18 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 18 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 18 |
| Windscreen has damage | 17 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 17 |
| Nearside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 17 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 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 Rear position lamp|s| not working |1.1.A.3b| | 16 |
| Nearside front brake binding |3.7.B.1| | 16 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 16 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 15 |
| Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 15 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 15 |
| Brake hose excessively deteriorated | 14 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 14 |
| Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 14 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 14 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 14 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 14 |
| Rear Exhaust system not adequately supported |7.1.1| | 13 |
| Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 13 |
| Front brake disc excessively pitted |3.5.1h| | 13 |
| Front brake excessively fluctuating | 13 |
| Battery insecure |1.9.1| | 12 |
| Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 12 |
| Offside 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 |
| Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 12 |
| Service brake: efficiency below requirements |3.7.B.7| | 12 |
| Offside front brake binding |3.7.B.1| | 12 |
| Rear parking brake recording little or no effort | 12 |
| Exhaust tailpipe not capable of allowing the emission probe to be inserted |7.3.D.1| | 11 |
| Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 11 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 11 |
| Centre Exhaust has part of the system excessively deteriorated |7.1.1a| | 11 |
| Exhaust emits excessive dense blue smoke during acceleration |7.3.A.2c| | 11 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 11 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 10 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 10 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 10 |
| Nearside Side repeater incorrect colour |1.4.A.2f| | 10 |
| Mechanical brake component has restricted free movement | 10 |
| Rear fog lamp not working |1.3.2b| | 10 |
| Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 10 |
| Rear brake binding | 10 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded outer sill |2.4.A.3| | 10 |
| Nearside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 9 |
| Emissions not tested |7.3.A.1| | 9 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 9 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 9 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 9 |
| Nearside Front front brake binding |3.7.B.1| | 9 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 9 |
| Nearside Inner Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 9 |
| Offside Inner Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 9 |
| Offside Rear Exhaust has a major leak of exhaust gases |7.1.2| | 9 |