| Most common failures | No# failures |
|---|
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 222 |
| Windscreen wiper does not clear the windscreen effectively | 196 |
| Registration plate issues | 158 |
| Headlamp aim out of alignment | 89 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 80 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 52 |
| Nearside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 46 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 45 |
| Windscreen washer not working | 40 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 36 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 35 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 32 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 26 |
| Nearside Parking brake inoperative on one side (1.4.1 (a)) | 26 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 21 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 20 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 20 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 18 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 18 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 17 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 15 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 15 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 14 |
| Brakes imbalanced across an axle | 14 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 13 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 12 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 8 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 8 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 7 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 7 |
| Horn not working (7.7 (a)) | 7 |
| Brake pipe excessively corroded | 6 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 5 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 5 |
| Registration plate lamp issues | 5 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 4 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 4 |
| Nearside Rear Parking (secondary brake) on a single line braking system has inadequate effort at a wheel (1.3.1 (a) (i)) | 4 |
| Offside Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Headlamp levelling device inoperative (4.1.5 (a)) | 4 |
| Nearside Front Lower Suspension arm ball joint excessively worn rear arm (5.3.4 (a) (i)) | 4 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 4 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 4 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 4 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Offside Rear Parking (secondary brake) on a single line braking system has inadequate effort at a wheel (1.3.1 (a) (i)) | 4 |
| Offside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii)) | 4 |