| Most common failures | No# failures |
|---|
| Registration plate issues | 21 |
| Headlamp aim out of alignment | 19 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Horn not working |1.7.3a| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Brake locking device missing |3.2.A1e| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Front Brake lever cannot be released smoothly does not fully return without assistance |3.1.3d| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies bulb |1.3.1a| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain clip |6.2.1h| | 1 |
| Rear Brake locking device insecure Lock bolt loose |3.2.A1e| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Front Footrest insecure fouls rear brake pedal |6.2.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies adjusted |1.3.1a| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition not tested |7.1.2| | 1 |
| Fuel system component leaking not tested |7.2.1a| | 1 |
| Front Horn sounds harsh or grating |1.7.3c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Fuel system component leaking |7.2.1a| | 1 |
| An item not tested |Manual| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Offside Rear suspension component loose |2.4.A.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 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 |
| Front Horn not working replaced |1.7.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Horn missing |1.7.1| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Riders seat insecure |6.2.1a| | 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 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Throttle operating incorrectly throttle sticking when on lock |6.2.7 |a| |i|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Brake component insecure (1.1.21 (c)) | 1 |