| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| 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| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Rear position lamp damaged and function impaired |1.1.1b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Centre Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Registration plate issues | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |