| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 5656 |
| Windscreen wiper does not clear the windscreen effectively | 5625 |
| Registration plate lamp issues | 4583 |
| Brake pipe excessively corroded | 3879 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 2308 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 2184 |
| Brakes imbalanced across an axle | 2124 |
| Rear brake binding | 1538 |
| Front brake disc in such a condition that it is seriously weakened | 1126 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 1010 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 919 |
| Offside Stop lamp not working |1.2.1b| | 695 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 694 |
| Registration plate issues | 648 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 588 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 578 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 576 |
| Nearside Stop lamp not working |1.2.1b| | 500 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 415 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 387 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 376 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 343 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 322 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 313 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 294 |
| Hazard warning switch faulty |1.4.B.1d| | 288 |
| Parking brake: efficiency below requirements |3.7.B.7| | 275 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 267 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 266 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 262 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 261 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 259 |
| Offside Rear Stop lamp not working |1.2.1b| | 252 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 245 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 242 |
| Nearside Rear Stop lamp not working |1.2.1b| | 234 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 231 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 226 |
| Windscreen washer not working | 225 |
| Rear brake application uneven | 223 |
| Offside Front Position lamp not working |4.2.1 |a|| | 220 |
| Front brake excessively fluctuating | 216 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 210 |
| Rear Mechanical brake component has restricted free movement | 207 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 206 |
| Rear parking brake recording little or no effort | 202 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 200 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 198 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 191 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 189 |
| Anti-lock braking system warning lamp indicates an ABS fault | 186 |
| Rear Exhaust system not adequately supported |7.1.1| | 181 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 181 |
| Emissions not tested (8.2.1.2 (d)) | 175 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 171 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 168 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 166 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 165 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 162 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 160 |
| Hazard warning lamps inoperative |1.4.B.1b| | 154 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 146 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 143 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 141 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 138 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 136 |
| All direction indicators not working (4.4.1 (a) (ii)) | 132 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 131 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 131 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 130 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 126 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 124 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 123 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 122 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 119 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 118 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 118 |