| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Headlamp aim out of alignment | 10 |
| Horn not working |1.7.3a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Front Wheel spoke excessively loose |4.2.1b| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Registration plate issues | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| 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| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Nearside Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Centre Front Headlamp insecure |1.2.3b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Exhaust system insecure |6.1.2 |a|| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Central Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Direction indicator not working (1.5.1c) | 1 |
| Front Wheel spoke excessively loose (4.2.1b) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear wheel rotation likely to be impeded by rear fender |6.2.1b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking rear mudguard insecure |6.1.1c| | 1 |
| Clutch lever positioned so it cannot be readily operated. insecure |6.2.1g| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Rear Direction indicator with a multiple light source more than 1/2 not functioning Only 3 of 6 leds functioning |4.4.1 |a| |ii|| | 1 |
| Wheel fixing loose |multiple fixings| Front wheel spokes excessively loose |5.2.1 |a| |i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |