| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 6 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Registration plate issues | 3 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Direction indicator flashing more than 120 times per minute All |1.5.1c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Offside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Throttle operating incorrectly Throttle sticks in open position and does not return to tick over. |6.2.1f| | 1 |
| Direction indicators not working All four indicators not working. |1.5.1c| | 1 |
| Brake lever mounting insecure Front brake lever mounting loose on handlebar, allowing lever to swivel. |3.1.2a| | 1 |