| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Registration plate lamp issues | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Registration plate issues | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake fluid contaminated (1.8 (a)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp not working Front switch n/w (4.3.1 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure |6.1.1 |b| |i|| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp not working front brake |4.3.1 |a| |ii|| | 1 |