| Most common failures | No# failures |
|---|
| Registration plate issues | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Registration plate lamp issues | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Headlamp aim out of alignment | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Horn missing |1.7.1| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain horseshoe locking device likely to become detached missing (6.1.7 (j) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Valve stem seriously misaligned |5.2.3 |j|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Shock absorber has a serious fluid leak fork seal |5.3.2 |b|| | 1 |
| Drive chain excessively tight seized links etc |6.2.1d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Suspension arm pin or bush excessively worn SWING ARM BEARING (5.3.4 (a) (i)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Wheel spoke excessively loose 4 |4.2.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |