| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Headlamp aim out of alignment | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Registration plate issues | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected drastically increases rpm when turning right |6.2.7 |a| |ii|| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Drive chain sprocket so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Registration plate lamp issues | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Offside Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Position lamp not working Rear (4.2.1 (a)) | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Direction indicators 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 |
| Rear Footrest missing |6.2.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicator not working all |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |