| Most common failures | No# failures |
|---|
| Parking brake: efficiency below requirements |3.7.B.7| | 834 |
| Headlamp aim out of alignment | 614 |
| Brakes imbalanced across an axle | 430 |
| Rear parking brake recording little or no effort | 413 |
| Exhaust emissions carbon monoxide content excessive |7.3.B.1a| | 324 |
| Brake pipe excessively corroded | 304 |
| Windscreen wiper does not clear the windscreen effectively | 262 |
| Service brake: efficiency below requirements |3.7.B.7| | 242 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 173 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 146 |
| Registration plate issues | 140 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 140 |
| Horn not working |1.6.2a| | 108 |
| Brake hose excessively deteriorated | 96 |
| Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b)) | 92 |
| Offside front brake binding |3.7.B.1| | 83 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 83 |
| Registration plate lamp issues | 74 |
| Nearside front brake binding |3.7.B.1| | 68 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 63 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 60 |
| Offside Rear fog lamp not working |1.3.2b| | 59 |
| Front brake application uneven | 57 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 54 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 54 |
| Offside Stop lamp not working |1.2.1b| | 52 |
| Nearside Stop lamp not working |1.2.1b| | 52 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 50 |
| Offside Front front brake binding |3.7.B.1| | 48 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 43 |
| Hazard warning switch faulty |1.4.B.1d| | 43 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 42 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 39 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 39 |
| Offside Headlamp not working on main beam |1.7.5a| | 39 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 39 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 36 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 36 |
| Nearside Headlamp not working on main beam |1.7.5a| | 34 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 34 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 33 |
| Direction indicators not working |1.4.A.2c| | 32 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 32 |
| Windscreen washer not working | 32 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 31 |
| Nearside Front front brake binding |3.7.B.1| | 30 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 28 |
| Rear brake application uneven | 27 |
| Mechanical brake component has restricted free movement | 27 |
| Nearside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 27 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 26 |
| Rear brake disc in such a condition that it is seriously weakened | 25 |
| rear brake recording little or no effort |3.7.B.5a| | 24 |
| Nearside Rear Stop lamp not working |1.2.1b| | 23 |
| Rear brake binding | 23 |
| Parking brake lever has no reserve travel |3.1.6b| | 23 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 23 |
| Exhaust emissions carbon monoxide content excessive |8.2.1.2 |b|| | 22 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 22 |
| Nearside Rear Rear wheel bearing has excessive play |2.6.2| | 22 |
| Offside Front Front constant velocity joint gaiter split |2.5.C.1a| | 22 |
| Hazard warning lamps inoperative |1.4.B.1b| | 22 |
| Nearside Side repeater not working |1.4.A.2c| | 22 |
| Front brake disc in such a condition that it is seriously weakened | 22 |
| Offside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 22 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 21 |
| Offside Rear Stop lamp not working |1.2.1b| | 21 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 21 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 20 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 19 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 19 |
| Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 19 |
| Hazard warning tell tale not working correctly |1.4.B.1e| | 18 |
| Horn not working (7.7 (a)) | 18 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 17 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 17 |
| Nearside Headlamp insecure |1.7.3| | 17 |
| Offside Side repeater not working |1.4.A.2c| | 17 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 17 |
| Offside Front Brake hose leaking |3.6.A.1| | 17 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 17 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 17 |
| Offside Rear Suspension arm corroded and seriously weakened |2.4.G.1| | 16 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 16 |
| Front brake excessively fluctuating | 16 |
| Brake pedal anti-slip provision missing |3.3.A.1b| | 15 |
| Nearside Front Brake hose leaking |3.6.A.1| | 15 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 15 |
| Steering system excessively tight |2.2.D.1| | 14 |
| Brake hose has insufficient room to move | 14 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 13 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 13 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 13 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 13 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 13 |
| Exhaust emissions hydrocarbon content excessive |7.3.B.1b| | 13 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 13 |
| Brake performance not tested |3.7.A.1| | 13 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 13 |
| Offside Headlamp insecure |1.7.3| | 12 |
| Windscreen wiper blade insecure | 12 |
| Offside Front brake disc excessively pitted |3.5.1h| | 12 |
| Offside Front Suspension arm corroded and seriously weakened |2.4.G.1| | 12 |
| Offside Headlamp does not operate immediately when selected on dipped beam |1.7.4a| | 12 |
| Offside Front Braking system leaking |3.6.A.1| | 12 |
| front brakes release unevenly |3.7.B.4| | 12 |
| Offside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 11 |
| Rear brake disc excessively pitted |3.5.1h| | 11 |
| Offside Front Lower Suspension arm corroded and seriously weakened |2.4.G.1| | 11 |
| Nearside Front Suspension arm corroded and seriously weakened |2.4.G.1| | 11 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 11 |
| Exhaust system not adequately supported |7.1.1| | 10 |
| Rear rear brake recording little or no effort |3.7.B.5a| | 10 |
| Offside Front Service brake excessively binding |1.2.1 |f|| | 10 |
| Offside Front Direction indicator not working |1.4.A.2c| | 10 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 10 |
| Nearside Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 10 |
| Offside Front wheel bearing rough when rotated |2.5.A.2| | 10 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 10 |