| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Horn not working |1.7.3a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front Brake lever insecure |3.1.2a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 3 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Riders seat insecure |6.2.1a| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Registration plate issues | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Nearside Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 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 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Exhaust has part of the system missing |7.1.1a| | 1 |
| Horn missing |1.7.1| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Offside Headlamp switch faulty |1.2.4| | 1 |
| Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Centre Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front suspension has severe distortion of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Upper Direction indicators not working |1.5.1c| | 1 |
| Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |