| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Rear reflector on motorcycle missing |1.4.1| | 28 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Registration plate issues | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Fuel cap sealing washer missing |7.2.2c| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Rear Wheel spoke excessively loose |4.2.1b| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Rear Brake locking device missing |3.2.A1e| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Horn not working |1.7.3a| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| 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 mono-shock pivot excessively worn |2.4.B.4| | 3 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Front suspension assembly component excessively misaligned |2.3.1| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Offside Direction indicators not working |1.5.1c| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake rod insecure |1.1.15 |c|| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Rear position lamp missing Rear lens missing. |1.1.1a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Wheel spoke excessively bent |4.2.1b| | 1 |
| Rear Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Horn missing |1.7.1| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Fuel hose leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Rear Suspension arm pin or bush likely to become detached suspension linkage (5.3.4 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Front Upper Fuel cap sealing washer missing |7.2.2c| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Brake locking device insecure |3.2.A1e| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Upper Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Upper Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Upper Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Fuel tank leaking no breather pipe fitted fuel leaking from filler cap vent over the petrol tank |7.2.1a| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Centre Front Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp missing No headlamp bulb. |4.1.1 |a| |ii|| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system Silencer mounting bracket loose on silencer |7.1.1.c| | 1 |
| Offside Rear Exhaust excessively deteriorated Silencer rivets worn resulting in loose sleeve and loss of seal |7.1.1a| | 1 |
| Rear Rear mono-shock pivot excessively worn monoshock linkage bottom pivot bush worn |2.4.B.4| | 1 |
| Offside Front Direction indicators not working when turn steering |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Lower Rear mono-shock insecure |2.4.B.4| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Lower Brake locking device missing |3.2.A1e| | 1 |