| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Registration plate issues | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Position lamp switch faulty |1.1.4a| | 2 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component r/h front shock absorber bush |2.3.4| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Brake pedal has inadequate reserve travel REAR |3.1.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp at least one does not illuminate on dipped beam No Dip working |1.2.2a|i|| | 1 |
| Inner Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Outer Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front Lower Steering lock stop missing |2.1.3| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Front Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Fuel hose leaking |7.2.1a| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Offside Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Nearside Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Offside Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Stop lamp remains on when the brake is released (1.3.1e) | 1 |