| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Headlamp aim out of alignment | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| 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| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Rear Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Front Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Outer Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Offside Drive chain worn to excess |6.2.1e| | 1 |
| Offside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Registration plate issues | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Wheel spindle loose fit lock washer (5.2.1 (c) (i)) | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Front suspension assembly component cracked |2.3.1| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| An item not tested |Manual| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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 |