| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Wheel spoke excessively loose |4.2.1b| | 3 |
| Offside Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp aim out of alignment | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake linkage excessively corroded |3.2.A1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Registration plate issues | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Brake hose damaged | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Brake hose excessively deteriorated | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Indicator tell tale not operating correctly |1.5.2| | 1 |
| Front Wheel spoke cracked. |4.2.1b| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |