| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 6307 |
| Windscreen wiper does not clear the windscreen effectively | 6163 |
| Brake pipe excessively corroded | 5894 |
| Headlamp aim out of alignment | 5821 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 2503 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 2471 |
| Brakes imbalanced across an axle | 2348 |
| Rear brake binding | 1466 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 1254 |
| Front brake disc in such a condition that it is seriously weakened | 1143 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 1055 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 836 |
| Offside Stop lamp not working |1.2.1b| | 774 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 764 |
| Nearside Stop lamp not working |1.2.1b| | 750 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 581 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 536 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 530 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 502 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 500 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 488 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 377 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 373 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 351 |
| Registration plate issues | 345 |
| Windscreen washer not working | 340 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 339 |
| Hazard warning switch faulty |1.4.B.1d| | 325 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 324 |
| Offside Rear Stop lamp not working |1.2.1b| | 322 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 319 |
| Nearside Rear Stop lamp not working |1.2.1b| | 316 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 306 |
| Parking brake: efficiency below requirements |3.7.B.7| | 301 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 296 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 281 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 278 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 273 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 270 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 259 |
| Offside Front Position lamp not working |4.2.1 |a|| | 252 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 242 |
| Emissions not tested (8.2.1.2 (d)) | 240 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 234 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 229 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 225 |
| Front brake excessively fluctuating | 215 |
| Rear parking brake recording little or no effort | 201 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 192 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 186 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 185 |
| Rear Mechanical brake component has restricted free movement | 183 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 180 |
| Rear Exhaust system not adequately supported |7.1.1| | 178 |
| Rear brake application uneven | 177 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 177 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 173 |
| Horn not working |1.6.2a| | 171 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 169 |
| Anti-lock braking system warning lamp indicates an ABS fault | 165 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 165 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 164 |
| Hazard warning lamps inoperative |1.4.B.1b| | 164 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 161 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 160 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 154 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 153 |
| All direction indicators not working (4.4.1 (a) (ii)) | 151 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 151 |
| Horn not working (7.7 (a) (ii)) | 149 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 146 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 143 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 142 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 141 |