| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 495 |
| Windscreen wiper does not clear the windscreen effectively | 493 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 97 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 97 |
| Registration plate issues | 95 |
| Brake pipe excessively corroded | 79 |
| Brakes imbalanced across an axle | 73 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 54 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 52 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 38 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 36 |
| Offside Rear brake caliper has restricted free movement |3.5.1k| | 34 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 34 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 33 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 32 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 30 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 30 |
| Nearside Rear brake caliper has restricted free movement |3.5.1k| | 29 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 28 |
| Parking brake lever has no reserve travel |3.1.6b| | 27 |
| Nearside Rear Shock absorbers has a serious fluid leak | 26 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 24 |
| Windscreen washer not working | 23 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 22 |
| Offside Rear Shock absorbers has a serious fluid leak | 20 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 20 |
| Rear brake disc in such a condition that it is seriously weakened | 19 |
| Nearside Front Shock absorbers has a serious fluid leak | 19 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 18 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 18 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 17 |
| Registration plate lamp issues | 17 |
| Anti-lock braking system warning lamp indicates an ABS fault | 17 |
| Offside Front Shock absorbers has a serious fluid leak | 17 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 16 |
| Front brake disc in such a condition that it is seriously weakened | 15 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 15 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 14 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 13 |
| Rear brake application uneven | 13 |
| Offside Front Position lamp not working |4.2.1 |a|| | 13 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 11 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 11 |
| Offside Front Road wheel fixing missing (5.2.1 (a) (i)) | 11 |
| Offside Front Headlamp has a product on the lens so that the light output is severely reduced (4.1.4 (b)) | 11 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 11 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 10 |
| Offside Rear Road wheel fixing missing (5.2.1 (a) (i)) | 10 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 10 |
| Windscreen has damage | 9 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 9 |
| Electronic stability system warning lamp indicates a fault |3.4.1c| | 9 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 9 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 9 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 9 |
| Nearside Front Headlamp has a product on the lens so that the light output is severely reduced (4.1.4 (b)) | 9 |
| Nearside Headlamp has a product on the lens so that the light output is severely reduced (4.1.4 (b)) | 9 |
| Offside Headlamp lens seriously defective (4.1.1 (b) (ii)) | 9 |
| Battery insecure |1.9.1| | 8 |
| Parking brake: efficiency below requirements |3.7.B.7| | 8 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 8 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 8 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 8 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 8 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 8 |
| Offside Front Service brake lagging in operation (1.2.1 (d)) | 8 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 8 |