| Most common failures | No# failures |
|---|
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Headlamp aim out of alignment | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Offside Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Offside Front Front suspension assembly component loose |2.3.1| | 1 |
| Offside Front Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Offside Front Steering lock stop maladjusted |2.1.3| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Wheel spoke cracked. |4.2.1b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |