| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 4196 |
| Windscreen wiper does not clear the windscreen effectively | 3660 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 1543 |
| Brake pipe excessively corroded | 1161 |
| Registration plate lamp issues | 828 |
| Front brake disc in such a condition that it is seriously weakened | 804 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 712 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 670 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 602 |
| Brakes imbalanced across an axle | 549 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 545 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 498 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 489 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 468 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 426 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 411 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 375 |
| Hazard warning lamps inoperative (4.4.1 (e)) | 368 |
| Windscreen washer not working | 340 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 330 |
| Hazard warning switch faulty |1.4.B.1d| | 293 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 284 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 284 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 274 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 273 |
| All direction indicators not working (4.4.1 (a) (ii)) | 271 |
| Nearside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 261 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 258 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 251 |
| Registration plate issues | 246 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 245 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 233 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 233 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 232 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 224 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 223 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 199 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 198 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 198 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 197 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 191 |
| Hazard warning switch inoperative |4.4.2 |a| |ii|| | 191 |
| Offside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 182 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 178 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 177 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 172 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 158 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 151 |
| Rear Exhaust system insecure (6.1.2 (a)) | 150 |
| Offside Rear Shock absorbers has a serious fluid leak | 145 |
| Horn not working (7.7 (a)) | 133 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 132 |
| Exhaust emissions likely to be affected by an exhaust leak (8.2.1.1 (b)) | 126 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 126 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 119 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 118 |
| Hazard warning lamps inoperative |1.4.B.1b| | 117 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 114 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 107 |
| Front Service brake excessively fluctuating (1.2.1 (e)) | 105 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 103 |
| Front brake excessively fluctuating | 103 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 101 |
| Emissions unable to be completed (8.2.1.2 (d)) | 98 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 98 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 97 |
| Nearside Front Road wheel badly distorted (5.2.2 (c) (i)) | 94 |
| Exhaust system insecure (6.1.2 (a)) | 89 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 89 |
| Emissions not tested (8.2.1.2 (d)) | 87 |
| Nearside Headlamp insecure (4.1.1 (c)) | 83 |
| Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 82 |
| Reversing lamp inoperative (4.6.1 (a)) | 81 |