| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 792 |
| Headlamp aim out of alignment | 382 |
| Brake pipe excessively corroded | 120 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 77 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 70 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 69 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 63 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 62 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 60 |
| Windscreen washer not working | 58 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 57 |
| Registration plate issues | 55 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 55 |
| Registration plate lamp issues | 51 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 51 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 51 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 46 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 45 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 42 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 42 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 42 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 39 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 36 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 35 |
| Brakes imbalanced across an axle | 34 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 34 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 32 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 25 |
| Offside Stop lamp not working |1.2.1b| | 24 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 22 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 22 |
| Nearside Stop lamp not working |1.2.1b| | 21 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 21 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 20 |
| Emissions not tested (8.2.1.2 (d)) | 20 |
| Nearside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 20 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 18 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 18 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 18 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 16 |
| Nearside Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 16 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 16 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 16 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 15 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 14 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 13 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 12 |
| Nearside Rear Stop lamp|s| not working |4.3.1 |a| |ii|| | 11 |
| Nearside Headlamp aim not tested (4.1.2 (b)) | 11 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 11 |
| Offside Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 11 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 11 |
| Engine mounting damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 10 |
| Exhaust emissions likely to be affected by an exhaust leak (8.2.1.1 (b)) | 9 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 9 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 9 |
| Offside Headlamp aim not tested (4.1.2 (b)) | 9 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 9 |
| Nearside Side repeater not working (4.4.1 (a) (ii)) | 9 |