| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 6 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Horn not working |1.7.3a| | 4 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Drive chain fouling another component |6.2.1d| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Registration plate issues | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Floor brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 1 |