| Most common failures | No# failures |
|---|
| Horn not working |1.7.3a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Headlamp aim out of alignment | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Registration plate issues | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear suspension bush has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Rear Roller brake test indicates brake effort fall 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 Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Footrest insecure left hand side foot peg bracket broken |6.2.1a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Throttle operating incorrectly throttle not returning |6.2.1f| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |