| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Horn not working |1.7.3a| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Lower 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 |
| Nearside Front Brake hose leaking fluid caliper |3.2.B4| | 1 |
| Offside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Brake hose leaking fluid front brake master cylinder hose clip missing |3.2.B4| | 1 |
| Registration plate issues | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Fuel cap missing |7.2.2a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicators not working rears
|1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Central Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |