| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Registration plate issues | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Nearside Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Nearside Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |