| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Headlamp aim out of alignment | 18 |
| Registration plate issues | 17 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Horn not working |1.7.3a| | 6 |
| Registration plate lamp issues | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Horn missing |1.7.1| | 2 |
| 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| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Front Brake lever attachment screws loose |3.1.2b| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear position lamp missing |1.1.1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Suspension component pin or bush excessively worn shock |5.3.4 |a| |i|| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Throttle operating incorrectly throttle sticking on (6.2.7 (a) (i)) | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Nearside Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 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 |
| Offside Lower Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride WHEEL |6.2.1h| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Upper Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Nearside Indicator switch insecure needs pegging |1.5.4| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 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 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Headlamp lens seriously defective (4.1.1 (b) (ii)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Centre Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Rear Upper Rear suspension bush has excessive free play rear nearside suspension bushes need replacing |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear Drive chain sprocket worn to excess both sprockets |6.2.1e| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Wheel spoke missing |4.2.1b| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Nearside Headlamp switch insecure |1.2.4| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Central Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Rear Shock absorber has an excessively worn bush Rear shock top and bottom (5.3.2 (c)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |