| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Horn not working |1.7.3a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Wheel spoke excessively loose |4.2.1b| | 4 |
| Registration plate issues | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Front shock absorber seal failed and leaking oil both leaking |2.3.3| | 2 |
| Rear Rear suspension bearing has excessive free play dog bone linkage has excessive play |2.4.A2a|i|| | 2 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn missing |1.7.1| | 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 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Steering headbearing has excessive free play top head stock bearing has excessive free play |2.2.2| | 1 |
| Front Wheel spoke excessively loose 2 spokes excessively loose and 2 loose |4.2.1b| | 1 |
| Nearside Front Front wheel spindle securing nut locking device insecure r clip insecure |2.3.5a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Central Exhaust system insecure (6.1.2 (a)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |