| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Headlamp aim out of alignment | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Registration plate issues | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Registration plate lamp issues | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Steering operation impeded by a fairing causing front brake to be applied (2.1.4 (e)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |