| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Registration plate issues | 7 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Horn not working |1.7.3a| | 6 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Wheel damaged significantly reducing the original strength hub was loose causing for excessing play. |4.2.1a| | 1 |
| Offside Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Brake lagging in operation |1.2.1 |d|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Stop lamp affected by the operation of another lamp bulb fitted incorrectly |1.3.2| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Nearside Front Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Central Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Front Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp rear bulb too bright on sidelamp -brake light not evident |1.1.3b| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Offside Front suspension has a fracture of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 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 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Rear Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Centre Rear Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front wheel spindle loose |2.3.3a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front suspension has a modification which reduces the strength of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front suspension has an inadequate repair of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front position lamp insecure no light |1.1.1c| | 1 |
| Headlamp main beam affected by the operation of another lamp no dip or head beam |1.2.2c| | 1 |
| Position lamp switch does not operate the front and rear position lamps switch for light not working rear light on all time engine going |1.1.4c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |