| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Registration plate issues | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Front Upper Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Brake hose damaged | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 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 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Exhaust mounting missing |7.1.1c| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Footrest missing |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front An item not tested |Manual| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Lower Suspension arm pin or bush excessively worn front swinging arm bush (5.3.4 (a) (i)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Road spring insecure (5.3.1 (a) (i)) | 1 |