| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 281 |
| Headlamp aim out of alignment | 174 |
| Brake pipe excessively corroded | 174 |
| Registration plate lamp issues | 94 |
| Brakes imbalanced across an axle | 78 |
| Rear brake binding | 72 |
| Horn not working |1.6.2a| | 70 |
| Horn not working (7.7 (a)) | 33 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 30 |
| Registration plate issues | 29 |
| Windscreen washer not working | 26 |
| Service brake: efficiency below requirements |3.7.B.7| | 25 |
| Parking brake: efficiency below requirements |3.7.B.7| | 24 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 22 |
| Offside Stop lamp not working |1.2.1b| | 22 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 21 |
| Rear Mechanical brake component has restricted free movement | 20 |
| Rear brake application uneven | 20 |
| Rear fog lamp not working |1.3.2b| | 18 |
| Brake hose excessively deteriorated | 18 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 17 |
| Nearside Front wheel bearing rough when rotated |2.5.A.2| | 16 |
| Exhaust system not adequately supported |7.1.1| | 15 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 14 |
| Front brake application uneven | 13 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 13 |
| Offside Rear fog lamp not working |1.3.2b| | 13 |
| Nearside front brake binding |3.7.B.1| | 12 |
| Exhaust system insecure (6.1.2 (a)) | 12 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 12 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 12 |
| Horn not working (7.7 (a) (ii)) | 12 |
| Brake load sensing valve seized |3.6.E.3| | 11 |
| Horn not working |7.7 |a| |ii|| | 11 |
| Parking brake lever has no reserve travel |3.1.6b| | 11 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Offside front brake binding |3.7.B.1| | 10 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 10 |
| Battery insecure |1.9.1| | 10 |
| Offside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 10 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 10 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 10 |
| Rear parking brake recording little or no effort | 10 |
| Nearside Stop lamp not working |1.2.1b| | 10 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 10 |
| Nearside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 9 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 9 |
| Offside Front wheel bearing rough when rotated |2.5.A.2| | 9 |
| Front brake disc in such a condition that it is seriously weakened | 9 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 9 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 8 |
| Centre Stop lamp not working |1.2.1b| | 8 |
| Brake load sensing valve seized and ABS not fitted or inoperative (1.1.17 (c) (ii)) | 8 |
| Offside Front Shock absorbers has a serious fluid leak | 8 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 8 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 7 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 7 |
| Front brake excessively fluctuating | 7 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 7 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 7 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 7 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 7 |
| Stop lamp not working |1.2.1b| | 7 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 7 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 7 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 7 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 7 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 6 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 6 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 6 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 6 |
| Nearside Front Subframe mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 6 |
| Offside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength inner arch (5.3.6 (a) (i)) | 6 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 6 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 6 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 6 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 6 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 6 |
| Nearside Side repeater not working |1.4.A.2c| | 6 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 6 |
| Offside Front Seat belt anchorage prescribed area strength or continuity significantly reduced (7.1.1 (a) (i)) | 6 |
| Fuel system component leaking |7.2.3| | 5 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 5 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Mechanical brake component has restricted free movement | 5 |
| Brake load sensing valve linkage seized |3.6.E.3| | 5 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 5 |
| Offside Front Front wheel bearing has excessive play |2.5.A.3c| | 5 |
| Nearside Front Side repeater not working |1.4.A.2c| | 5 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 5 |
| Nearside Front Front wheel bearing rough when rotated |2.5.A.2| | 5 |
| Rear Brake load sensing valve linkage seized |3.6.E.3| | 5 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 5 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 5 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 5 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 5 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 5 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 5 |
| Brake hose damaged | 5 |