| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 29 |
| Horn not working |1.7.3a| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Brake lever insecure |3.1.2a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Inner Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Centre Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Centre Rear Lower Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Centre Rear Stop lamp flickers when tapped lightly by hand |1.3.1d| | 1 |
| Centre Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Inner Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Inner Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Inner Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Horn control defective |1.7.2a| | 1 |
| Outer Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Nearside Front Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |