| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Registration plate issues | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp affected by the operation of the horn |1.3.2| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Front position lamp does not illuminate immediately when switched on |1.1.3a| | 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 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicators affected by the operation of another lamp stop flashing when engine rev`sd up |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 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 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket loose |6.2.1h| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Brake hose excessively deteriorated | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Horn missing |1.7.1| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Steering headbearing has excessive wear or free play steering bearings loose (2.2.2 (f) (i)) | 1 |
| Nearside 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 |
| Offside 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 Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Upper Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Upper Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Upper Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Front Brake component inadequately mounted locking tabs not locked over the bolts that hold the disc in place |1.1.21 |c|| | 1 |
| Handlebar mounting clamp bolt loose All four bolt`s loose |2.1.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Rear suspension component loose |2.4.A.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |