| Most common failures | No# failures |
|---|
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Horn not working |1.7.3a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp aim out of alignment | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Registration plate issues | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 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 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |