| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear 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 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Horn not working |1.7.3a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride brake securing bar |6.2.1h| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |