| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Wheel spoke cracked. |4.2.1b| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Registration plate issues | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Front Footrest insecure |6.2.1a| | 2 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Outer Front Wheel spoke missing |4.2.1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Sidecar front position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Sidecar attachment insecure |5.1.1b| | 1 |
| Sidecar wheel bearings have excessive free play |5.2.3c| | 1 |
| Sidecar attachment has excessive play in a pin/bush |5.1.1d| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside An item not tested |Manual| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Headlamp missing |1.2.3a| | 1 |
| Nearside Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Front Upper Fuel system component insecure |7.2.1b| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |