| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 4867 |
| Windscreen wiper does not clear the windscreen effectively | 4565 |
| Registration plate lamp issues | 2905 |
| Brake pipe excessively corroded | 2429 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 1127 |
| Brakes imbalanced across an axle | 1093 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 1045 |
| Front brake disc in such a condition that it is seriously weakened | 886 |
| Rear brake binding | 671 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 654 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 631 |
| Registration plate issues | 520 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 519 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 432 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 285 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 263 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 243 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 232 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 230 |
| Front brake excessively fluctuating | 225 |
| Windscreen washer not working | 212 |
| Offside Front Macpherson strut corroded and seriously weakened (5.3.3 (b) (i)) | 212 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 207 |
| Offside Stop lamp not working |1.2.1b| | 188 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 180 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 179 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 175 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 169 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 162 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 159 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 155 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 152 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 148 |
| Parking brake: efficiency below requirements |3.7.B.7| | 147 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 144 |
| Rear parking brake recording little or no effort | 142 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 140 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 140 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 138 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 137 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 135 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 134 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 129 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 126 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 125 |
| Emissions not tested (8.2.1.2 (d)) | 124 |
| Offside Front Position lamp not working |4.2.1 |a|| | 123 |
| Rear Exhaust system not adequately supported |7.1.1| | 122 |
| Nearside Stop lamp not working |1.2.1b| | 114 |
| Hazard warning switch faulty |1.4.B.1d| | 113 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 110 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 109 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 108 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 107 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 107 |
| Anti-lock braking system warning lamp indicates an ABS fault | 106 |
| Nearside Front Macpherson strut corroded and seriously weakened (5.3.3 (b) (i)) | 104 |
| Rear brake application uneven | 101 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 98 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 97 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 95 |
| Rear Mechanical brake component has restricted free movement | 95 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 95 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 93 |
| Offside Rear Stop lamp not working |1.2.1b| | 92 |
| All direction indicators not working (4.4.1 (a) (ii)) | 89 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 88 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 88 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 85 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 85 |
| Rear Exhaust system insecure (6.1.2 (a)) | 85 |