| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Registration plate issues | 6 |
| Rear Wheel spoke excessively loose |4.2.1b| | 4 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Horn not working |1.7.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake back plate|s| insecure |3.2.A1j| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Exhaust is leaking and excessively noisey blowing at cylinder head joint |7.1.1b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Brake lining(s) contaminated Front (1.1.13 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Position lamp switch insecure (4.2.2 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |