| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Registration plate issues | 3 |
| Horn not working |1.7.3a| | 3 |
| Brake hose excessively deteriorated | 3 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Inner Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Front mudguard insecure |2.3.7| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |