| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Headlamp aim out of alignment | 13 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Registration plate issues | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Horn missing |1.7.1| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| 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| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Brake excessively binding excessive binding approx 30kg |1.2.1 |f|| | 1 |
| Registration plate lamp issues | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel system component leaking carburetor |7.2.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel spindle securing nut locking device missing split pin |2.4.A.2b| | 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 |
| Rear Wheel spoke excessively corroded |4.2.1b| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Centre Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front Steering linkage locking device missing |2.1.3 |d|| | 1 |
| Rear Steering linkage locking device missing |2.1.3 |d|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Brake performance not tested |3.3| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Brake hose damaged | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |