| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Registration plate issues | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Horn not working |1.7.3a| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Drive chain worn to excess |6.2.1e| | 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 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Rear 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| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies needs adjusting |1.3.1a| | 1 |
| Nearside Steering lock stop ineffective fouling on tank |2.1.3| | 1 |
| Offside Steering lock stop ineffective fouling on tank |2.1.3| | 1 |
| Front wheel has a missing wheel bolt|s| valve lock nut missing |4.2.3a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Horn sounds harsh or grating |1.7.3c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Offside Front Lower Footrest insecure |6.2.1a| | 1 |
| Nearside Front Upper Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Centre Front Lower Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Lower Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Lower Rear suspension component loose |2.4.A.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake lever insecure lever adjusting nut loose (1.1.2 (e) (i)) | 1 |
| Rear Footrest missing pillion footrests missing (6.2.12 (a)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |