| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Horn not working |1.7.3a| | 5 |
| Registration plate issues | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Indicator switch insecure |1.5.4| | 2 |
| Brake lever insecure |3.1.2a| | 2 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Steering control handlebar movement restricted by taut cables |2.1.2c| | 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 |
| Lower Steering headbearing has excessive free play |2.2.2| | 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 Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear suspension has a fracture of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| An item not tested |Manual| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Direction indicator obscured |1.5.1a| | 1 |
| Rear Rear suspension component seized |2.4A2a|ii|| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake component has an inadequate repair |3.1.5| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front shock absorber seal failed and leaking oil x2 |2.3.3| | 1 |
| Direction indicators flashing more than 120 times per minute all |1.5.1c| | 1 |
| Fairings so located that it is likely to impede the steering handle bars fouling on clocks |2.1.2e| | 1 |
| Rear suspension component loose swinging arm |2.4.A.1a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |