| Most common failures | No# failures |
|---|
| Direction indicators affected by the operation of another lamp |1.5.1c| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| All position lamps not working (4.2.1 (a)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Drive chain fouling another component Chain Fouling on Chain Guard |6.2.1d| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp insecure Headlight Loose and Offside Headlight Bracket Breaking |1.2.3b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Horn not working |1.7.3a| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp |4.2.3 |b|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |