| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Horn not working |1.7.3a| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Footrest insecure |6.2.1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear wheel spindle loose |2.4.A.2b| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Fuel pipe union leaking |7.2.1a| | 2 |
| Front Front position lamp insecure |1.1.1c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Fuel tank leaking |7.2.1a| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Headlamp switch insecure |1.2.4| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Nearside Front Lower Front suspension assembly component loose |2.3.1| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Offside Sidecar wheel insecure |4.2.3b| | 1 |
| Registration plate issues | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn missing |1.7.1| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Brake cable badly frayed |3.2.A1b| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Sproket bolts loose |6.2.1h| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |