| Most common failures | No# failures |
|---|
| Registration plate issues | 8 |
| Headlamp aim out of alignment | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Stop lamp remains on when the brakes are released | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Inner Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Fuel hose leaking |6.1.3 |b| |i|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake cylinder severely corroded |3.2.B1b| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |