| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 36 |
| Headlamp aim out of alignment | 24 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Registration plate issues | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Horn not working |1.7.3a| | 5 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Offside Steering lock stop ineffective |2.1.3| | 4 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Handlebar deformed |2.1.1b| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Brake lever mounting insecure |3.1.2a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear mono-shock pivot seized |2.4.B.4| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Brake hose excessively deteriorated | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Offside Front Brake cable badly frayed |3.2.A1b| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Centre Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Wheel spoke missing |4.2.1b| | 1 |
| Nearside Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Front Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Nearside Brake lever mounting insecure |3.1.2a| | 1 |
| Nearside Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake lever cracked |3.1.2c| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Front Brake pedal is inoperative |3.1.3c| | 1 |
| Nearside Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |