| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Horn not working |1.7.3a| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Registration plate issues | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Horn missing |1.7.1| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Front Brake cable has a significantly damaged outer casing. |3.2.A1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Brake performance not tested |3.3| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake linkage excessively damaged |3.2.A1c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake cable badly frayed |3.2.A1b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Brake rod has restricted free movement (1.1.15 (e)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| An item not tested |Manual| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Centre Front Fork yoke deformed |2.1.1b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Centre Front Riders seat insecure |6.2.1a| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake cable badly frayed |3.2.A1b| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Centre Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded brake arm |3.2.A1h| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Throttle operating incorrectly not returning |6.2.1f| | 1 |
| Steering headbearing has excessive free play excess play in head stock bearings |2.2.2| | 1 |
| Fuel system component insecure fuel pipes need retaining clips |7.2.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Brake linkage clevis joint excessively worn Arm Broken |3.2.A1d| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Stop lamp missing |1.3.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp not working replaced switch assy (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Forks insecure bolt missing (2.2.2 (d) (i)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Fuel hose leaking |7.2.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake linkage excessively damaged CABLE DETATCHED |3.2.A1c| | 1 |
| Front Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Offside Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Fuel hose leaking |7.2.1a| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Riders seat insecure front part is insecure |6.2.1a| | 1 |
| Front wheel bearings have excessive free play front wheel moves side to side |2.3.5b| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Front Fuel system component insecure |7.2.1b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Throttle operating incorrectly stiff and not returning |6.2.1f| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Throttle operating incorrectly stuck open |6.2.1f| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Front Brake locking device missing |3.2.A1e| | 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 |