| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 749 |
| Windscreen wiper does not clear the windscreen effectively | 642 |
| Registration plate lamp issues | 599 |
| Parking brake: efficiency below requirements |3.7.B.7| | 284 |
| Anti-lock braking system warning lamp indicates an ABS fault | 231 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 198 |
| Rear parking brake recording little or no effort | 163 |
| Brake hose excessively deteriorated | 140 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 136 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 124 |
| Registration plate issues | 111 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 108 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 94 |
| Parking brake lever has no reserve travel |3.1.6b| | 94 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 93 |
| Nearside Stop lamp not working |1.2.1b| | 91 |
| Offside Stop lamp not working |1.2.1b| | 85 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 85 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 84 |
| Battery insecure |1.9.1| | 81 |
| Rear brake disc in such a condition that it is seriously weakened | 80 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 60 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 60 |
| Front brake disc in such a condition that it is seriously weakened | 55 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 51 |
| Electronic stability system warning lamp indicates a fault |3.4.1c| | 49 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 49 |
| Centre Stop lamp not working |1.2.1b| | 48 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 43 |
| Brake pipe excessively corroded | 43 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 39 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 38 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 37 |
| Brakes imbalanced across an axle | 36 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 34 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 34 |
| Offside Front Position lamp not working |4.2.1 |a|| | 33 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 31 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 31 |
| Windscreen has damage | 31 |
| Rear brake binding | 30 |
| Rear fog lamp not working |1.3.2b| | 28 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 27 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 27 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 27 |
| Nearside Rear Stop lamp not working |1.2.1b| | 26 |
| Offside Rear fog lamp not working |1.3.2b| | 26 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 26 |
| Windscreen wiper blade insecure | 25 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 24 |
| Exhaust emissions exceed level of metered smoke for a turbo charged engine |8.2.2.2 |b|| | 22 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 22 |
| Offside Rear Stop lamp not working |1.2.1b| | 22 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 22 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 21 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 20 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 20 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 19 |
| Engine MIL inoperative or indicates a malfunction |8.2.2.2 |g|| | 19 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 19 |
| Exhaust emissions exceed level of metered smoke for a turbo charged engine (8.2.2.2 (b)) | 18 |
| Offside Front wheel bearing rough when rotated |2.5.A.2| | 18 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 17 |
| Nearside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 17 |
| Battery insecure and likely to cause a short circuit (4.13 (a) (ii)) | 17 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 16 |
| Nearside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 16 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 16 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 16 |
| Offside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 15 |
| Windscreen washer not working | 15 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 15 |
| Front brake excessively fluctuating | 15 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 15 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 14 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 14 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 13 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 13 |
| rear parking |secondary| brakes imbalanced | 13 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 13 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 13 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 13 |