| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 2023 |
| Windscreen wiper does not clear the windscreen effectively | 1831 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 549 |
| Registration plate lamp issues | 509 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 398 |
| Front brake disc in such a condition that it is seriously weakened | 383 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 378 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 291 |
| Brake pipe excessively corroded | 289 |
| Brakes imbalanced across an axle | 269 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 268 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 233 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 220 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 215 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 206 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 198 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 196 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 183 |
| Windscreen washer not working | 183 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 163 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 148 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 141 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 129 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 126 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 125 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 120 |
| Hazard warning lamps inoperative (4.4.1 (e)) | 119 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 118 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 118 |
| All direction indicators not working (4.4.1 (a) (ii)) | 116 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 116 |
| Registration plate issues | 102 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 96 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 86 |
| Nearside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 84 |
| Rear Exhaust system insecure (6.1.2 (a)) | 83 |
| Offside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 75 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 73 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 73 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 69 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 63 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 60 |
| Horn not working (7.7 (a)) | 57 |
| Nearside Front Road wheel badly distorted (5.2.2 (c) (i)) | 56 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 56 |
| Exhaust emissions likely to be affected by an exhaust leak (8.2.1.1 (b)) | 55 |
| Offside Rear Shock absorbers has a serious fluid leak | 53 |
| Hazard warning switch faulty |1.4.B.1d| | 53 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 51 |
| Emissions unable to be completed (8.2.1.2 (d)) | 50 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 49 |
| Hazard warning switch inoperative |4.4.2 |a| |ii|| | 48 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 48 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 45 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 45 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 44 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 42 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 41 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 40 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 40 |