| Most common failures | No# failures |
|---|
| Stop lamp affected by the operation of another lamp |1.3.2| | 6 |
| Headlamp aim out of alignment | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Rear 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| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Stop lamp affected by the operation of the horn |1.3.2| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Registration plate issues | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Registration plate lamp issues | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Direction indicators flashing less than 60 times a minute N/S + O/S |1.5.1c| | 1 |
| Direction indicators affected by the operation of another lamp when brake applied |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Rear suspension component misaligned |2.4.A.1a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| An item not tested |Manual| | 1 |
| Fuel system component leaking Fule tap leaking |7.2.1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear suspension bush 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 Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 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 wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Rear Shock absorber insecurely attached shock |5.3.2 |a| |i|| | 1 |
| All direction indicators adversely affected by the operation of another lamp when brake lights operated (4.4.3 (b)) | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Front All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Nearside Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride brake arm locknut missing |6.2.1h| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain split link |6.2.1h| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |