| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Horn not working |1.7.3a| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Front Wheel spoke excessively loose |4.2.1b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies 12v bulb fitted |1.3.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on 12v bulb fitted |1.1.3a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear reflector on motorcycle missing (1.4.1) | 1 |