| Most common failures | No# failures |
|---|
| Horn not working |1.7.3a| | 3 |
| Headlamp aim out of alignment | 3 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Front Headlamp insecure |1.2.3b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Registration plate issues | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |