| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 26 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Registration plate issues | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Horn not working |1.7.3a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 4 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Registration plate lamp issues | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Seat insecure |6.2.1a| | 2 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear wheel spindle loose |2.4.A.2b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Nearside Steering lock stop ineffective yoke hits the tank on l/h lock |2.1.3| | 1 |
| Handlebar deformed bent |2.1.1b| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp switch insecure moves with throttle |1.2.4| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 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 suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 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 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Upper Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Front Upper Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Centre Front Upper Indicator tell tale not functioning |1.5.2| | 1 |
| Centre Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |
| Rear Brake master cylinder has an excessively worn master cylinder pivot. |3.2.B5| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Centre Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Upper Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Fuel tank insecure |6.1.3 |a| |i|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake lever has insufficient reserve travel touching throttle |1.1.2 |a|| | 1 |
| Stop lamp not working front stop lamp switch |4.3.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| 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 Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |