| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Horn not working |1.7.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Rear Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Lower Front suspension assembly component loose |2.3.1| | 1 |
| Offside Lower Front suspension assembly component loose |2.3.1| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Upper Front suspension assembly component loose |2.3.1| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Lower Brake locking device missing |3.2.A1e| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Registration plate issues | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |