| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 335 |
| Brake pipe excessively corroded | 305 |
| Headlamp aim out of alignment | 252 |
| Horn not working |1.6.2a| | 147 |
| Registration plate lamp issues | 63 |
| Windscreen washer not working | 53 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 53 |
| Brakes imbalanced across an axle | 49 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 49 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 42 |
| Exhaust system not adequately supported |7.1.1| | 38 |
| Rear brake binding | 31 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 29 |
| Horn not working (7.7 (a) (ii)) | 29 |
| Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 28 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 27 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 27 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 25 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 25 |
| Nearside Stop lamp not working |1.2.1b| | 24 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 24 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 22 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 22 |
| Offside Stop lamp not working |1.2.1b| | 21 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 20 |
| Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 20 |
| Horn not working |7.7 |a| |ii|| | 20 |
| Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 19 |
| Brake hose excessively deteriorated | 19 |
| Battery insecure |1.9.1| | 18 |
| Service brake: efficiency below requirements |3.7.B.7| | 18 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 18 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 18 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 17 |
| Centre Exhaust system not adequately supported |7.1.1| | 17 |
| Emissions not tested |7.0| | 16 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 16 |
| Nearside Rear Suspension has inadequate clearance with the bump stop |2.4.A.1a| | 16 |
| Offside Rear Suspension has inadequate clearance with the bump stop |2.4.A.1a| | 16 |
| Registration plate issues | 15 |
| Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 14 |
| Parking brake: efficiency below requirements |3.7.B.7| | 14 |
| Horn not working (7.7 (a)) | 14 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 13 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 13 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 13 |
| Offside Rear fog lamp not working |1.3.2b| | 12 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 11 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 11 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 10 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 10 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 10 |
| Nearside Rear Stop lamp not working |1.2.1b| | 10 |
| Rear brake application uneven | 10 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 10 |
| Fuel cap/sealing device sealing washer deteriorated |7.2.4c| | 10 |
| Front brake excessively fluctuating | 10 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 9 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 9 |
| Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 9 |
| Horn not loud enough to be heard by another road user |1.6.2b| | 8 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 8 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 8 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 8 |
| Offside Rear Stop lamp not working |1.2.1b| | 8 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 8 |
| Nearside Front Subframe mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 8 |
| Front brake application uneven | 7 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 7 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 7 |
| Direction indicators incorrect colour |1.4.A.2f| | 7 |
| Emissions not tested (8.2.1.2 (d)) | 7 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 7 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 7 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 7 |
| Exhaust system insecure (6.1.2 (a)) | 7 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 7 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 7 |
| Rear Exhaust system not adequately supported |7.1.1| | 7 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 7 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 7 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Front brake disc in such a condition that it is seriously weakened | 6 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 6 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 6 |
| Brake load sensing valve seized |3.6.E.3| | 6 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 6 |
| Offside Front Front wheel bearing has excessive play |2.5.A.3c| | 6 |
| Rear Mechanical brake component has restricted free movement | 6 |
| Offside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 6 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 6 |
| Windscreen wiper blade insecure | 6 |
| Nearside Headlamp not working on main beam |1.7.5a| | 6 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 6 |
| Nearside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 6 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 6 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 6 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 6 |
| Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 6 |
| Windscreen has damage | 6 |
| Offside Rear Rear wheel bearing rough when rotated |2.6.1| | 6 |
| Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 6 |