| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Headlamp aim out of alignment | 7 |
| Registration plate issues | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front shock absorber seal failed and leaking oil Both |2.3.3| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front Outer Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Outer Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Outer Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Outer Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Front Upper Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Centre Rear Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Rear Outer Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Rear Inner Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Rear Outer Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Outer Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Centre Rear Outer Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Front Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Rear Rear mono-shock insecure |2.4.B.4| | 1 |
| Nearside Front Horn not working |1.7.3a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear position lamp does not face the rear |1.1.1d| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front suspension assembly component missing lower clamp bolt missing |2.3.1| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Centre Direction indicators not working |1.5.1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Front Brake pedal mounting insecure |3.1.2a| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Fuel tank leaking |7.2.1a| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Brake pedal insecure slop in pivot and bolt missing |1.1.2 |e| |i|| | 1 |
| Front Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced |6.1.1 |b| |ii|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |