| Most common failures | No# failures |
|---|
| Brake pipe excessively corroded | 461 |
| Windscreen wiper does not clear the windscreen effectively | 413 |
| Headlamp aim out of alignment | 306 |
| Brakes imbalanced across an axle | 129 |
| Horn not working |1.6.2a| | 121 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 107 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 105 |
| Registration plate lamp issues | 70 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 63 |
| Brake hose excessively deteriorated | 58 |
| Exhaust system not adequately supported |7.1.1| | 54 |
| Rear brake binding | 52 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 48 |
| Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 43 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 42 |
| Windscreen washer not working | 42 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 40 |
| Nearside Stop lamp not working |1.2.1b| | 38 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 37 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 36 |
| Service brake: efficiency below requirements |3.7.B.7| | 35 |
| Registration plate issues | 35 |
| Battery insecure |1.9.1| | 35 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 30 |
| Offside Stop lamp not working |1.2.1b| | 30 |
| Horn not working (7.7 (a) (ii)) | 30 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 29 |
| Emissions not tested |7.0| | 27 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 26 |
| Centre Exhaust system not adequately supported |7.1.1| | 23 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 23 |
| Offside Rear fog lamp not working |1.3.2b| | 23 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 23 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 23 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 23 |
| Parking brake: efficiency below requirements |3.7.B.7| | 22 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 21 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 20 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 20 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 19 |
| Horn not working (7.7 (a)) | 19 |
| Offside Side repeater not working |1.4.A.2c| | 18 |
| Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 18 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 18 |
| Offside front brake binding |3.7.B.1| | 17 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 17 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 17 |
| Nearside Side repeater not working |1.4.A.2c| | 17 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 17 |
| Horn not working |7.7 |a| |ii|| | 15 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 15 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 15 |
| Front brake disc in such a condition that it is seriously weakened | 15 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 14 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 14 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 14 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 14 |
| Nearside Front Shock absorbers has a serious fluid leak | 13 |
| Rear parking brake recording little or no effort | 13 |
| Nearside Rear Stop lamp not working |1.2.1b| | 13 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 13 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 13 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 12 |
| Front brake application uneven | 12 |
| Brake load sensing valve seized |3.6.E.3| | 12 |
| Offside Rear Stop lamp not working |1.2.1b| | 12 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 11 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 11 |
| Parking brake lever has no reserve travel |3.1.6b| | 11 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 11 |
| Nearside front brake binding |3.7.B.1| | 11 |
| Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 10 |
| Hazard warning switch faulty |1.4.B.1d| | 10 |
| Rear Mechanical brake component has restricted free movement | 10 |
| Headlamp levelling device inoperative |4.1.5 |a|| | 10 |
| Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 10 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 10 |
| Windscreen wiper blade insecure | 10 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 10 |
| Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 10 |
| Battery insecure and likely to fall from carrier (4.13 (a) (ii)) | 10 |
| Brake load sensing valve seized and ABS not fitted or inoperative (1.1.17 (c) (ii)) | 9 |
| Rear brake application uneven | 9 |
| Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 9 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 9 |
| Exhaust system insecure (6.1.2 (a)) | 9 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 9 |
| Rear Exhaust system not adequately supported |7.1.1| | 9 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 9 |
| Exhaust mounting missing |7.1.1b| | 8 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 8 |
| Rear fog lamp not working |1.3.2b| | 8 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 8 |
| Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 8 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 8 |
| Offside Rear Shock absorbers has a serious fluid leak | 8 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 8 |
| Offside Front Shock absorbers has a serious fluid leak | 8 |
| Brake load sensing valve linkage seized |3.6.E.3| | 8 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 8 |
| Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 8 |
| Offside Front Front wheel bearing has excessive play |2.5.A.3c| | 8 |
| Emissions not tested (8.2.1.2 (d)) | 8 |
| Headlamp levelling device inoperative (4.1.5 (a)) | 8 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 7 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 7 |
| Hazard warning lamps inoperative |1.4.B.1b| | 7 |
| Offside Front Side repeater not working |1.4.A.2c| | 7 |
| Front Exhaust system not adequately supported |7.1.1| | 7 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 7 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 7 |
| Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 7 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 7 |
| Centre Exhaust mounting missing |7.1.1b| | 7 |
| Nearside Rear Shock absorbers has a serious fluid leak | 7 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 7 |
| Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 7 |
| Offside Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 7 |
| Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 7 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 7 |
| Windscreen has damage | 7 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 7 |
| Offside Rear Suspension spring mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 7 |