| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 211 |
| Brake pipe excessively corroded | 82 |
| Headlamp aim out of alignment | 81 |
| Registration plate lamp issues | 31 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 28 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 24 |
| Registration plate issues | 19 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 18 |
| Brakes imbalanced across an axle | 18 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 17 |
| Front brake disc in such a condition that it is seriously weakened | 16 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 16 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 15 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 15 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 14 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 11 |
| Nearside Rear Stop lamp not working |1.2.1b| | 11 |
| Nearside Stop lamp not working |1.2.1b| | 10 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 9 |
| Offside Stop lamp not working |1.2.1b| | 9 |
| Centre Stop lamp not working |1.2.1b| | 8 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 8 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 8 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 8 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 8 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 7 |
| Offside Rear Shock absorbers has a serious fluid leak | 7 |
| Offside Rear Stop lamp not working |1.2.1b| | 7 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 7 |
| Windscreen wiper blade insecure | 7 |
| Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 6 |
| Nearside Rear Shock absorbers has a serious fluid leak | 6 |
| Windscreen has damage | 6 |
| Parking brake: efficiency below requirements |3.7.B.7| | 6 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 6 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 6 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 5 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 5 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 5 |
| Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` |8.3.1b| | 5 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Anti-lock braking system warning lamp indicates an ABS fault | 4 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 4 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 4 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Offside Front Shock absorbers has a serious fluid leak | 4 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 4 |
| Front brake application uneven | 4 |
| Nearside Front Shock absorbers has a serious fluid leak | 4 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 4 |
| Windscreen washer not working | 4 |
| Front brake excessively fluctuating | 4 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 4 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 4 |
| Exhaust system insecure (6.1.2 (a)) | 3 |
| Emissions unable to be completed (8.2.1.2 (d)) | 3 |
| Exhaust emissions likely to be affected by an exhaust leak (8.2.1.1 (b)) | 3 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 3 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Central Stop lamp(s) not working (4.3.1 (a) (ii)) | 3 |
| Offside Front Position lamp not working |4.2.1 |a|| | 3 |
| Rear fog lamp not working |1.3.2b| | 3 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 3 |
| Offside Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 3 |
| Nearside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 3 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 3 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 3 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 3 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 3 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 3 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 3 |
| Rear parking brake recording little or no effort | 3 |
| Nearside Rear Axle swivel pins and bushes swivel pin and/or bush excessively worn (5.1.2 (b) (i)) | 3 |
| Nearside Front Anti-roll bar ball joint excessively worn (5.3.4 (a) (i)) | 3 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 3 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 3 |
| Offside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 3 |
| Parking brake lever has excessive movement indicating incorrect adjustment |1.1.6 |c|| | 3 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 3 |