| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies front brake light needed repairing at station. |1.3.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Brake disc|s| securing bolt|s| missing lock tabs not securing to bolts |3.2.A1g| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Brake pedal is so short that the brake cannot be readily applied rear brake lever bent |1.1.2 |d|| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |