| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 4452 |
| Windscreen wiper does not clear the windscreen effectively | 3953 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 1707 |
| Brake pipe excessively corroded | 1117 |
| Registration plate lamp issues | 1030 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 905 |
| Front brake disc in such a condition that it is seriously weakened | 899 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 782 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 715 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 611 |
| Brakes imbalanced across an axle | 553 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 516 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 453 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 434 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 434 |
| Hazard warning lamps inoperative (4.4.1 (e)) | 434 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 416 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 409 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 405 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 373 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 359 |
| Windscreen washer not working | 350 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 337 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 332 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 331 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 316 |
| Hazard warning switch faulty |1.4.B.1d| | 316 |
| All direction indicators not working (4.4.1 (a) (ii)) | 313 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 308 |
| Hazard warning switch inoperative |4.4.2 |a| |ii|| | 280 |
| Registration plate issues | 277 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 273 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 270 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 263 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 261 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 259 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 257 |
| Nearside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 257 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 253 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 250 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 240 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 237 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 231 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 227 |
| Offside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 158 |
| Rear Exhaust system insecure (6.1.2 (a)) | 155 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 153 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 145 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 138 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 137 |
| Horn not working (7.7 (a)) | 134 |
| Hazard warning lamps inoperative |1.4.B.1b| | 124 |
| Front Service brake excessively fluctuating (1.2.1 (e)) | 120 |
| Nearside Front Road wheel badly distorted (5.2.2 (c) (i)) | 114 |
| Front brake excessively fluctuating | 112 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 108 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 105 |
| Offside Rear Shock absorbers has a serious fluid leak | 105 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 102 |
| Exhaust emissions likely to be affected by an exhaust leak (8.2.1.1 (b)) | 99 |
| Emissions not tested (8.2.1.2 (d)) | 99 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 97 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 97 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 96 |