| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 194 |
| Brake pipe excessively corroded | 162 |
| Windscreen wiper does not clear the windscreen effectively | 136 |
| Horn not working |1.6.2a| | 76 |
| Registration plate lamp issues | 54 |
| Rear brake binding | 35 |
| Brakes imbalanced across an axle | 32 |
| Service brake: efficiency below requirements |3.7.B.7| | 21 |
| Offside Rear fog lamp not working |1.3.2b| | 21 |
| Windscreen washer not working | 19 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 16 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 14 |
| Parking brake: efficiency below requirements |3.7.B.7| | 13 |
| Horn not working (7.7 (a) (ii)) | 13 |
| Nearside Headlamp aim beam image kick up to the offside |1.8| | 13 |
| Registration plate issues | 13 |
| Brake hose excessively deteriorated | 12 |
| Offside Headlamp aim beam image kick up to the offside |1.8| | 11 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 11 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 11 |
| Horn not working (7.7 (a)) | 10 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 10 |
| Battery insecure |1.9.1| | 9 |
| Offside Stop lamp not working |1.2.1b| | 9 |
| Exhaust system not adequately supported |7.1.1| | 8 |
| Hazard warning switch faulty |1.4.B.1d| | 8 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 8 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 8 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 8 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 7 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 7 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 7 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 6 |
| Offside Front Front wheel bearing has excessive play |2.5.A.3c| | 6 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 6 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 6 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 6 |
| Horn not loud enough to be heard by another road user |1.6.2b| | 6 |
| Rear Mechanical brake component has restricted free movement | 6 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 6 |
| Nearside Stop lamp not working |1.2.1b| | 6 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 5 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 5 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 5 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 5 |
| Rear fog lamp not working |1.3.2b| | 5 |
| Rear brake application uneven | 5 |
| Windscreen has damage | 5 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 4 |
| Offside Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Exhaust system insecure (6.1.2 (a)) | 4 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 4 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 4 |
| Rear fog lamp tell tale not working |1.3.1b| | 4 |
| Front brake disc in such a condition that it is seriously weakened | 4 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 4 |
| Front brake excessively fluctuating | 4 |
| Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 4 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 4 |
| Centre Exhaust system not adequately supported |7.1.1| | 4 |
| Nearside Front Side repeater not working |1.4.A.2c| | 4 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 4 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 4 |
| Offside Rear Stop lamp not working |1.2.1b| | 4 |
| Windscreen wiper blade insecure | 4 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 4 |
| Rear Rear fog lamp not working |1.3.2b| | 3 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 3 |
| Nearside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 3 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 3 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 3 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 3 |
| Offside Headlamp insecure |1.7.3| | 3 |
| Front Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1| | 3 |
| Offside Rear Upper Outline marker lamp not working (4.2.1 (a) (ii)) | 3 |
| Offside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 3 |
| Nearside Rear Outline marker lamp not working (4.2.1 (a) (ii)) | 3 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 3 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 3 |
| Hazard warning tell tale not working correctly |1.4.B.1e| | 3 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Offside Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 3 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 3 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 3 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 3 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 3 |
| Nearside Rear Stop lamp not working |1.2.1b| | 3 |
| Parking brake lever has no reserve travel |3.1.6b| | 3 |
| Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 3 |
| Offside Side repeater not working |1.4.A.2c| | 3 |
| Windscreen wiper not operating automatically when switched on |8.2.1b| | 3 |
| Centre Stop lamp has less than 50% of the light sources illuminating |1.2.1b| | 3 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 3 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 3 |
| Mechanical brake component has restricted free movement | 3 |
| Nearside front brake binding |3.7.B.1| | 3 |
| Offside Front Headlamp aim beam image kick up to the offside |1.8| | 3 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 3 |
| Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 3 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 3 |