| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Horn not working |1.7.3a| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Registration plate issues | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Fuel system component leaking |7.2.1a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Brake hose excessively deteriorated | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Front Lower Footrest insecure |6.2.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride rear brake torque arm front and rear |6.2.1h| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride rear wheel spindle nut |6.2.1h| | 1 |
| Rear shock absorber insecurely mounted both |2.4.A.3b| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp does not face the rear |1.1.1d| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 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 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Rear Lower Brake back plate|s| insecure |3.2.A1j| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 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 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose broke |4.2.1b| | 1 |
| Brake reaction bracket insecure no split pin |3.2.A1j| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Horn control defective button missing |1.7.2a| | 1 |
| Nearside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |