| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Registration plate issues | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Centre Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Front Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Position lamp missing (4.2.1 (a)) | 1 |
| Nearside Rear Position lamp missing (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Horn not working |1.7.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake linkage excessively damaged |3.2.A1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |