| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 95 |
| Headlamp aim out of alignment | 55 |
| Windscreen wiper does not clear the windscreen effectively | 44 |
| Brake pipe excessively corroded | 43 |
| Exhaust emits an excessive level of metered smoke |7.4.B.3a| | 26 |
| Brakes imbalanced across an axle | 14 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 13 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 11 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 10 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 10 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 10 |
| Front brake disc in such a condition that it is seriously weakened | 10 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 9 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 8 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 8 |
| Rear parking brake recording little or no effort | 7 |
| Rear brake binding | 6 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 5 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 5 |
| Parking brake: efficiency below requirements |3.7.B.7| | 4 |
| Offside Stop lamp not working |1.2.1b| | 4 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 4 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 4 |
| Nearside Stop lamp not working |1.2.1b| | 4 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 4 |
| Exhaust emissions exceed default limit of 1.5m-1 (8.2.2.2 (b)) | 4 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 4 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 4 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 3 |
| Windscreen has damage | 3 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 3 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 3 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 3 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Registration plate issues | 3 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 3 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 3 |
| Hazard warning switch inoperative |4.4.2 |a| |ii|| | 3 |
| Front brake excessively fluctuating | 3 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 2 |
| Nearside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 2 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 2 |
| Windscreen washer not working | 2 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 2 |
| Parking brake lever has no reserve travel |3.1.6b| | 2 |
| Offside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Engine MIL inoperative or indicates a malfunction |8.2.2.2 |g|| | 2 |
| Service brake excessively binding both rear (1.2.1 (f)) | 2 |
| Offside Front Lower Suspension arm pin or bush excessively worn rear bush (5.3.4 (a) (i)) | 2 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 2 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 2 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 2 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 2 |
| Oil leaking excessively from engine |8.4.1 |a| |i|| | 2 |
| Offside Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 2 |
| Hazard warning lamps inoperative |1.4.B.1b| | 2 |
| Exhaust emissions exceed default limit of 1.5m-1 |8.2.2.2 |b|| | 2 |
| Offside Front Position lamp not working |4.2.1 |a|| | 2 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 2 |
| Offside Rear Road wheel badly distorted |5.2.2 |c| |i|| | 2 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Offside Headlamp aim projected beam image is obviously incorrect |4.1.2 |c|| | 2 |
| Exhaust fumes entering cabin (6.1.2 (b) (i)) | 2 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |