| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Registration plate issues | 11 |
| Horn not working |1.7.3a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Offside Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Centre Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Brake hose damaged | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear suspension bearing has excessive free play rear and central linkage bearings |2.4.A2a|i|| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |