| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Horn missing |1.7.1| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Steering lock stop ineffective |2.1.3| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Brake lever is inoperative |3.1.3c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Horn control not readily accesible. |1.7.2a| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Registration plate issues | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Fuel system component leaking suspect carb leak |7.2.1a| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Brake cable knotted |3.2.A1b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Offside Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Horn replaced by a gong |1.7.3b| | 1 |
| Rear suspension component loose lateral play in swinging arm |2.4.A.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |