| Most common failures | No# failures |
|---|
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Headlamp aim out of alignment | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Horn not working |1.7.3a| | 4 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 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 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel system component leaking tap |7.2.1a| | 1 |
| Offside Front Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Handlebar handgrip missing |2.1.1c| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Front Brake component is severely distorted |3.1.5| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Registration plate issues | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Brake cable badly frayed |3.2.A1b| | 1 |
| Steering headbearing has excessive free play Requires adjustment |2.2.2| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |