| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 198 |
| Headlamp aim out of alignment | 105 |
| Registration plate lamp issues | 56 |
| Brake pipe excessively corroded | 55 |
| Registration plate issues | 25 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 24 |
| Front brake disc in such a condition that it is seriously weakened | 23 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 20 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 16 |
| Front brake excessively fluctuating | 15 |
| Brakes imbalanced across an axle | 14 |
| Offside Stop lamp not working |1.2.1b| | 12 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 12 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 12 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 11 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 10 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 10 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 9 |
| Nearside Rear Shock absorbers has a serious fluid leak | 8 |
| Front brake application uneven | 8 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 8 |
| Anti-lock braking system warning lamp indicates an ABS fault | 8 |
| Windscreen washer not working | 8 |
| Offside Rear Shock absorbers has a serious fluid leak | 7 |
| Offside Rear Stop lamp not working |1.2.1b| | 7 |
| Nearside Stop lamp not working |1.2.1b| | 7 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 7 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 6 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 6 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 6 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 6 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 6 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 5 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 5 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 5 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 5 |
| Emissions not tested (8.2.1.2 (d)) | 5 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 5 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 5 |
| Rear fog lamp not working |1.3.2b| | 5 |
| Offside Front Position lamp not working |4.2.1 |a|| | 5 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 4 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 4 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 4 |
| Centre Stop lamp not working |1.2.1b| | 4 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 4 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 3 |
| Offside Front Service brake excessively binding |1.2.1 |f|| | 3 |
| Offside Rear fog lamp not working |1.3.2b| | 3 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 3 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 3 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 3 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 3 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 3 |
| Nearside Rear Stop lamp not working |1.2.1b| | 3 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 3 |
| Offside Rear Stop lamp|s| not working |4.3.1 |a| |ii|| | 3 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Offside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 3 |
| Central Stop lamp not working |1.2.1b| | 3 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 3 |
| Parking brake: efficiency below requirements |3.7.B.7| | 3 |