| Most common failures | No# failures |
|---|
| Parking brake: efficiency below requirements |3.7.B.7| | 1041 |
| Windscreen wiper does not clear the windscreen effectively | 825 |
| Rear parking brake recording little or no effort | 662 |
| Registration plate lamp issues | 650 |
| Headlamp aim out of alignment | 519 |
| Brake pipe excessively corroded | 474 |
| Anti-lock braking system warning lamp indicates an ABS fault | 394 |
| Rear brake binding | 283 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 155 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 152 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 144 |
| Front brake disc in such a condition that it is seriously weakened | 134 |
| Battery insecure |1.9.1| | 133 |
| Registration plate issues | 124 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 123 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 110 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 107 |
| Centre Stop lamp not working |1.2.1b| | 107 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 96 |
| Brakes imbalanced across an axle | 95 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 86 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 84 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 80 |
| Nearside Stop lamp not working |1.2.1b| | 80 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 74 |
| Parking brake lever has no reserve travel |3.1.6b| | 70 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 66 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 58 |
| Brake hose excessively deteriorated | 56 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 56 |
| Offside Stop lamp not working |1.2.1b| | 54 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 53 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 49 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 45 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 44 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 41 |
| Windscreen wiper blade insecure | 38 |
| Nearside Rear Stop lamp not working |1.2.1b| | 38 |
| Rear Mechanical brake component has restricted free movement | 34 |
| Service brake: efficiency below requirements |3.7.B.7| | 34 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 32 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 32 |
| Stop lamp not working |1.2.1b| | 30 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 28 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 28 |
| Offside Rear Wheel nut|s| missing |4.2.A.1e| | 28 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 27 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 27 |
| Offside Rear Stop lamp not working |1.2.1b| | 27 |
| Front brake excessively fluctuating | 27 |
| Hazard warning switch faulty |1.4.B.1d| | 26 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 26 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 25 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 25 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 24 |
| Windscreen has damage | 24 |
| rear parking |secondary| brakes imbalanced | 24 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 24 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 24 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 23 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 23 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 23 |
| Offside Front Position lamp not working |4.2.1 |a|| | 22 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 22 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 22 |
| Nearside Rear Wheel nut|s| missing |4.2.A.1e| | 21 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 21 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 21 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 20 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 20 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 19 |
| Power steering component|s| leaking |2.3.3b| | 19 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 19 |
| Centre Rear Stop lamp not working |1.2.1b| | 19 |
| Nearside Steering rack gaiter split |2.2.D.2d| | 19 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 18 |
| Front brake application uneven | 17 |
| Nearside Side repeater not working |1.4.A.2c| | 16 |
| Rear brake application uneven | 16 |
| Offside Rear fog lamp not working |1.3.2b| | 16 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 16 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 16 |
| Central Stop lamp not working |1.2.1b| | 16 |
| Horn not working |1.6.2a| | 16 |
| Offside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 16 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 16 |
| Offside Steering arm has relative movement at its fixings |2.2.B.1h| | 15 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 15 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 15 |
| Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 15 |