| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Registration plate issues | 2 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Centre Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Lower Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |