| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 15 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 8 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Nearside Indicator tell tale not functioning |1.5.2| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Nearside Rear Direction indicator not working |1.5.1c| | 6 |
| Nearside Steering lock stop ineffective |2.1.3| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Horn not working |1.7.3a| | 4 |
| Offside Steering lock stop ineffective |2.1.3| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Registration plate issues | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Indicator tell tale not operating correctly |1.5.2| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Steering lock stop missing |2.1.3| | 2 |
| Offside Steering lock stop missing |2.1.3| | 2 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Offside Front Steering lock stop ineffective |2.1.3| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Nearside Brake lever mounting insecure |3.1.2a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Front Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators 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 Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Rear Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Indicator switch defective |1.5.4| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Centre Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Upper Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Plate brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.B1c| | 1 |
| Centre Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| An item not tested |Manual| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Brake lever attachment screws missing |3.1.2b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen headlights have no image (4.1.2 (a)) | 1 |
| Lower Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |