| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Fuel system component insecure |7.2.1b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Registration plate issues | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Horn not working |1.7.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Steering linkage locking device missing axle nut |2.1.3 |d|| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Upper Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Centre Front Steering linkage has excessive free play |2.2.2| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Rear Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Upper Fuel tank leaking |7.2.1a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front wheel insecure |4.2.3b| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced swing arm |6.1.1 |c| |i|| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Brake excessively binding FRONT |1.2.1 |f|| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front suspension assembly component loose steering stem nut. |2.3.1| | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |