| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 3979 |
| Windscreen wiper does not clear the windscreen effectively | 3912 |
| Brake pipe excessively corroded | 1371 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 888 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 859 |
| Front brake disc in such a condition that it is seriously weakened | 843 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 766 |
| Registration plate lamp issues | 646 |
| Brakes imbalanced across an axle | 472 |
| Registration plate issues | 425 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 354 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 311 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 288 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 275 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 275 |
| Hazard warning switch faulty |1.4.B.1d| | 270 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 269 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 263 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 256 |
| Hazard warning switch inoperative |4.4.2 |a| |ii|| | 239 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 224 |
| Windscreen washer not working | 218 |
| Hazard warning lamps inoperative (4.4.1 (e)) | 217 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 216 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 207 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 202 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 198 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 195 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 178 |
| Front brake excessively fluctuating | 176 |
| Offside Front Position lamp not working |4.2.1 |a|| | 169 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 166 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 163 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 163 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 157 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 156 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 151 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 151 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 151 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 149 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 149 |
| All direction indicators not working (4.4.1 (a) (ii)) | 143 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 141 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 141 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 137 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 134 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 132 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 131 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 130 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 125 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 123 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 116 |
| Emissions not tested (8.2.1.2 (d)) | 106 |
| Hazard warning lamps inoperative |1.4.B.1b| | 102 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 100 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 100 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 94 |
| Rear Exhaust system insecure (6.1.2 (a)) | 94 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 93 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 93 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 89 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 88 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 87 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 81 |
| Nearside Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 81 |
| Nearside Stop lamp not working |1.2.1b| | 77 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 77 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 77 |
| Offside Stop lamp not working |1.2.1b| | 77 |
| Offside Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 72 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 72 |