| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Headlamp aim out of alignment | 11 |
| Horn not working |1.7.3a| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Brake locking device insecure |3.2.A1e| | 2 |
| Fuel pipe leaking |7.2.1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Registration plate issues | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Position lamp switch faulty |1.1.4a| | 1 |
| Horn missing |1.7.1| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride rear torque arm loose |6.2.1h| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Direction indicator not working None of them working! |1.5.1c| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Central Front Upper Riders seat insecure Seat removed and secured PRS |6.2.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Drive chain fouling another component |6.2.1d| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Front Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Motorcycle structure cracked |6.1.1a| | 1 |
| Stop lamp not working Bulb |4.3.1 |a| |ii|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front Lower Brake locking device missing |3.2.A1e| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake locking device missing CABLE CLEVIS PIN |3.2.A1e| | 1 |
| Fuel system component leaking Left hand fuel tap leaking |7.2.1a| | 1 |
| Throttle operating incorrectly Does not return to idle |6.2.1f| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Front wheel spindle loose |2.3.5a| | 1 |