| Most common failures | No# failures |
|---|
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp aim out of alignment | 3 |
| Horn not working |1.7.3a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Front Roller brake test indicates a sticking brake (3.3.A1a) | 1 |
| Rear Brake pedal mounting insecure and centre stand assembly (3.1.2a) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Horn not working (1.7.3a) | 1 |
| Registration plate issues | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Drive chain excessively tight (6.2.1d) | 1 |
| Front suspension fouling which affects the movement of the front suspension. (2.3.6a) | 1 |
| Horn missing (1.7.1) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Fuel system component leaking carbuerettor (6.1.3 (b) (i)) | 1 |
| All direction indicators adversely affected by the operation of another lamp all indicators (4.4.3 (b)) | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Footrest insecure R/H |6.2.1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Rear Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Front Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Rear Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |