| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Registration plate issues | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Wheel spoke cracked. |4.2.1b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Centre Headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Centre Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Outer Front Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Central Drive chain excessively loose |6.2.1d| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Central Exhaust is leaking and excessively noisey downpipe |7.1.1b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Handlebar mounting insecure |2.2.1 |a| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Locking device(s) not correctly fitted which may make the motor bicycle dangerous to ride (6.2.1h) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Locking device(s) not correctly fitted which may make the motor bicycle dangerous to ride (6.2.1h) | 1 |
| Drive chain worn to excess (6.2.1e) | 1 |
| Drive chain sprocket worn to excess (6.2.1e) | 1 |
| Rear Drive chain sprocket carrier worn to excess cush drive rubbers worn (6.2.1e) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Centre Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Stop lamp not working on rear brake (4.3.1 (a) (ii)) | 1 |
| Handlebar grip insecure to handlebar Both (2.2.1 (d) (ii)) | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Suspension arm pin or bush excessively worn Swing Arm |5.3.4 |a| |i|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel spoke cracked. |4.2.1b| | 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 |
| Lower Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Rear Wheel hub excessively worn (5.2.1 (b) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake performance not tested play in rear hub (1.2.1 (g)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front All position lamps not working |4.2.1 |a|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Central Front Upper Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 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 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Outer Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |