| Most common failures | No# failures |
|---|
| Registration plate issues | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Headlamp aim out of alignment | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Horn not working |1.7.3a| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp remains on when the brake is released |loose switch refitted to front brake lever| |1.3.1e| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Drive chain horseshoe locking device likely to become detached The horseshoe clip is not in the groove of the split links pin its mounted to and is dangerous. (6.1.7 (j) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Direction indicator missing all |1.5.1a| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |