| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Offside Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Suspension rod pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride axle nut |6.2.1h| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Horn not working (7.7 (a)) | 1 |